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Am186 ER and Am188 ER
TM TM
High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM
DISTINCTIVE CHARACTERISTICS
n E86TM family 80C186- and 80C188-compatible microcontrollers with enhanced bus interface -- Lower system cost with high performance -- 3.3-V 0.3-V operation with 5-V tolerant I/O n Memory integration -- 32 Kbyte of internal SRAM -- Internal SRAM provides same performance as zero-wait-state external memory n High performance -- 25-, 33-, 40- and 50-MHz operating frequencies -- Supports zero-wait-state operation at 50 MHz with 55-ns external memory -- 1-Mbyte memory address space -- 64-Kbyte I/O space n Enhanced features provide faster access to memory and various clock input modes -- Nonmultiplexed address bus provides glueless interface to external RAM and ROM -- Phase-locked loop (PLL) enables processor to operate at up to four times clock input frequency n Enhanced integrated peripherals -- Thirty-two programmable I/O (PIO) pins -- Asynchronous serial port allows full-duplex, 7-bit or 8-bit data transfers -- DMA to and from asynchronous serial port -- Synchronous serial interface allows half-duplex, bidirectional data transfer to and from ASICs -- Reset configuration register -- Additional external interrupts -- Hardware watchdog timer can generate NMI or system reset -- Pseudo static RAM (PSRAM) controller includes auto refresh capability Familiar 80C186 peripherals with enhanced functionality -- Two independent DMA channels -- Programmable interrupt controller with six external interrupts -- Three programmable 16-bit timers -- Programmable memory and peripheral chip-select logic -- Programmable wait state generator -- Power-save clock mode Software-compatible with the 80C186 and 80C188 microcontrollers Widely available native development tools, applications, and system software Available in the following packages: -- 100-pin, thin quad flat pack (TQFP) -- 100-pin, plastic quad flat pack (PQFP)
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GENERAL DESCRIPTION
The Am186TMER and Am188TMER microcontrollers are par t of the AMD E86TM family of embedded microcontrollers and microprocessors based on the x86 architecture. The Am186ER and Am188ER microcontrollers are the ideal upgrade for designs requiring 80C186/80C188 microcontroller c o m p a t i b i l i t y, i n c r e a s e d p e r f o r m a n c e, s e r i a l communications, a direct bus interface, and integrated memory. The Am186ER and Am188ER microcontrollers integrate memory and the functions of the CPU, nonmultiplexed address bus, timers, chip selects, interrupt controller, DMA controller, PSRAM controller, w a t c h d o g t i m e r, a s y n c h r o n o u s s e r i a l p o r t , synchronous serial interface, and programmable I/O
(c) Copyright 2000 Advanced Micro Devices, Inc. All rights reserved.
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(PIO) pins on one chip. Compared to the 80C186/ 8 0 C 1 8 8 m i c r o c o n t r o l l e r s, t h e A m 1 8 6 E R a n d Am188ER microcontrollers enable designers to reduce the size, power consumption, and cost of embedded systems, while increasing functionality and performance. The Am186ER and Am188ER microcontrollers have been designed to meet the most common requirements of embedded products developed for the communications, office automation, mass storage, and general embedded markets. Specific applications include feature phones, cellular phones, PBXs, multiplexers, modems, disk drives, hand-held terminals and desktop ter minals, fax machines, printers, photocopiers, and industrial controls.
Publication# 20732 Rev: D Amendment/0 Issue Date: June 2000
Am186TMER MICROCONTROLLER BLOCK DIAGRAM
INT2/INTA0 INT3/INTA1/IRQ CLKOUTA INT4 INT1/SELECT INT0 NMI TMROUT0 TMRIN0 TMROUT1 DRQ0 DRQ1
CLKOUTB
TMRIN1
X2 X1
VCC GND
Clock and Power Management Unit Watchdog Timer (WDT) Control Registers
Interrupt Control Unit
Execution Unit
Control Registers
Timer Control Unit 0 1 (WDT) Max Count B Registers Max Count A Registers 16-Bit Count Registers Control Registers
DMA Unit 2 0 1 20-Bit Source Pointers 20-Bit Destination Pointers 16-Bit Count Registers Control Registers Control Registers
RES
Control Registers
ARDY SRDY S2 S1/IMDIS S0/SREN DT/R DEN HOLD HLDA S6/ CLKSEL1 UZI/ CLKSEL2
Refresh Control Unit
PSRAM Control Unit 32 Kbyte SRAM (16K x 16)
Bus Interface Unit
A19-A0
AD15-AD0
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RD WHB WLB LCS/ONCE0
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Chip-Select Unit
UCS/ONCE1
Control Registers
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PIO Unit Control Registers Asynchronous Serial Port Control Registers Synchronous Serial Interface
SCLK SDATA SDEN0 SDEN1
PIO31- PIO0*
TXD RXD
PCS6/A2 PCS5/A1 PCS3-PCS0
MCS3/RFSH MCS2-MCS0
WR
BHE/ADEN
Note: * All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 30 and Table 3 on page 36 for information on shared functions.
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Am186TMER and Am188TMER Microcontrollers Data Sheet
Am188TMER MICROCONTROLLER BLOCK DIAGRAM
INT2/INTA0 INT3/INTA1/IRQ CLKOUTA INT4 INT1/SELECT INT0 NMI TMROUT0 TMRIN0 TMROUT1 DRQ0 DRQ1
CLKOUTB
TMRIN1
X2 X1
Clock and Power Management
VCC GND
Interrupt Control Unit
Execution Unit
Watchdog Timer (WDT) Control Registers
Control Registers
Timer Control Unit 0 1 (WDT) 2 Max Count B Registers Max Count A Registers 16-Bit Count Registers Control Registers
DMA Unit 0 1 20-Bit Source Pointers 20-Bit Destination Pointers 16-Bit Count Registers Control Registers Control Registers
RES
ARDY SRDY S2 S1/IMDIS S0/SREN DT/R DEN HOLD HLDA S6/ CLKSEL1 UZI/ CLKSEL2
Control Registers
Refresh Control Unit
PSRAM Control Unit
Bus Interface Unit
A19-A0
AO15-AO8
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AD7-AD0 ALE
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32 Kbyte SRAM (32K x 8)
RD LCS/ONCE0 WB WR
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Chip-Select Unit
UCS/ONCE1
Control Registers
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PIO Unit Control Registers Asynchronous Serial Port Control Registers Synchronous Serial Interface
SCLK SDATA SDEN0 SDEN1
PIO31- PIO0*
TXD RXD
PCS6/A2 PCS5/A1 PCS3-PCS0
MCS3/RFSH MCS2-MCS0
RFSH2/ADEN
Notes: * All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 30 and Table 3 on page 36 for information on shared functions.
Am186TMER and Am188TMER Microcontrollers Data Sheet
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ORDERING INFORMATION Standard Products
AMD standard products are available in several packages and operating ranges. The order numbers (valid combinations) are formed by a combination of the elements below.
Am186ER
-50
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\W LEAD FORMING \W=Trimmed and Formed TEMPERATURE RANGE C = ER Commercial (TC =0C to +100C) I = ER Industrial (TA =-40C to +85C) where: TC = case temperature where: TA = ambient temperature
PACKAGE TYPE V=100-Pin Thin Quad Flat Pack (TQFP) K=100-Pin Plastic Quad Flat Pack (PQFP) SPEED OPTION -25 = 25 MHz -33 = 33 MHz -40 = 40 MHz -50 = 50 MHz
Valid Combinations Am186ER-25 Am186ER-33 Am186ER-40 Am186ER-50 Am188ER-25 Am188ER-33 Am188ER-40 Am188ER-50 Am186ER-25 Am186ER-33 Am186ER-40 Am186ER-50 Am188ER-25 Am188ER-33 Am188ER-40 Am188ER-50
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VC\W or KC\W VC\W or KC\W KI\W or VI\W KI\W or VI\W
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DEVICE NUMBER/DESCRIPTION Am186ER = High-Performance, 80C186-Compatible, 16-Bit Embedded Microcontroller with RAM Am188ER = High-Performance, 80C188-Compatible, 16-Bit Embedded Microcontroller with RAM
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Valid Combinations
Valid combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations.
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Am186TMER and Am188TMER Microcontrollers Data Sheet
TABLE OF CONTENTS
Distinctive Characteristics ............................................................................................................ 1 General Description ..................................................................................................................... 1 Am186TMER Microcontroller Block Diagram ................................................................................ 2 Am188TMER Microcontroller Block Diagram ................................................................................ 3 Ordering Information .................................................................................................................... 4 List of Figures .............................................................................................................................. 9 List of Tables ............................................................................................................................... 9 Revision History ......................................................................................................................... 10 E86TM Family of Embedded Microprocessors and Microcontrollers .......................................... 12 Related Documents ....................................................................................................... 13 Demonstration Board Products ...................................................................................... 13 Third-Party Development Support Products ............................................................................13 Customer Service .......................................................................................................... 13 Key Features and Benefits ........................................................................................................ 14 Application Considerations ............................................................................................ 14 Comparison of the Am186TMER and 80C186 Microcontrollers ................................................. 15 TQFP Connection Diagram and Pinouts--Am186TMER Microcontroller ................................... 16 TQFP Pin Assignments--Am186TMER Microcontroller (Sorted by Pin Number) ...................... 17 TQFP Pin Assignments--Am186TMER Microcontroller (Sorted by Pin Name) .......................... 18 TQFP Connection Diagram and Pinouts--Am188TMER Microcontroller ................................... 19 TQFP Pin Assignments--Am188TMER Microcontroller (Sorted by Pin Number) ...................... 20 TQFP Pin Assignments--Am188TMER Microcontroller (Sorted by Pin Name) ......................... 21 PQFP Connection Diagram and Pinouts--Am186TMER Microcontroller ................................... 22 PQFP Pin Assignments--Am186TMER Microcontroller (Sorted by Pin Number) ...................... 23 PQFP Pin Assignments--Am186TMER Microcontroller (Sorted by Pin Name) ......................... 24 PQFP Connection Diagram and Pinouts--Am188TMER Microcontroller ................................... 25 PQFP Pin Assignments--Am188TMER Microcontroller (Sorted by Pin Number) ...................... 26 PQFP Pin Assignments--Am188TMER Microcontroller (Sorted by Pin Name) ......................... 27 Logic Symbol--Am186TMER Microcontroller ............................................................................. 28 Logic Symbol--Am188TMER Microcontroller ............................................................................. 29 Pin Descriptions ......................................................................................................................... 30 Pins Used by Emulators ................................................................................................. 30 A19-A0 (A19/PIO9, A18/PIO8, A17/PIO7) .................................................................... 30 AD7-AD0 ....................................................................................................................... 30 AD15-AD8 (Am186TMER Microcontroller) ..................................................................... 30 AO15-AO8 (Am188TMER Microcontroller) ..................................................................... 30 ALE ................................................................................................................................ 31 ARDY ............................................................................................................................. 31 BHE/ADEN (Am186TMER Microcontroller Only) ............................................................ 31 CLKOUTA ...................................................................................................................... 31 CLKOUTB ...................................................................................................................... 31 DEN/PIO5 ...................................................................................................................... 31 DRQ1-DRQ0 (DRQ1/PIO13, DRQ0/PIO12) ................................................................. 32 DT/R/PIO4 ..................................................................................................................... 32 GND ............................................................................................................................... 32 HLDA ............................................................................................................................. 32 HOLD ............................................................................................................................. 32 INT0 ............................................................................................................................... 32 INT1/SELECT ................................................................................................................ 32 INT2/INTA0/PIO31 ......................................................................................................... 33 INT3/INTA1/IRQ ............................................................................................................. 33 INT4/PIO30 .................................................................................................................... 33
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Am186TMER and Am188TMER Microcontrollers Data Sheet
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LCS/ONCE0 ................................................................................................................... 33 MCS3/RFSH/PIO25 ....................................................................................................... 33 MCS2-MCS0 (MCS2/PIO24, MCS1/PIO15, MCS0/PIO14) .......................................... 34 NMI ................................................................................................................................ 34 PCS3-PCS0 (PCS3/PIO19, PCS2/PIO18, PCS1/PIO17, PCS0/PIO16) ...................... 34 PCS5/A1/PIO3 ............................................................................................................... 34 PCS6/A2/PIO2 ............................................................................................................... 34 PIO31-PIO0 (Shared) .................................................................................................... 35 RD .................................................................................................................................. 35 RES ................................................................................................................................ 35 RFSH2/ADEN (Am188TMER Microcontroller Only) ........................................................ 35 RXD/PIO28 .................................................................................................................... 35 S2 ................................................................................................................................... 35 S1/IMDIS ........................................................................................................................ 37 S0/SREN ........................................................................................................................ 37 S6/CLKSEL1/PIO29 ....................................................................................................... 37 SCLK/PIO20 .................................................................................................................. 37 SDATA/PIO21 ................................................................................................................ 37 SDEN1/PIO23, SDEN0/PIO22 ....................................................................................... 37 SRDY/PIO6 .................................................................................................................... 38 TMRIN0/PIO11 .............................................................................................................. 38 TMRIN1/PIO0 ................................................................................................................ 38 TMROUT0/PIO10 .......................................................................................................... 38 TMROUT1/PIO1 ............................................................................................................ 38 TXD/PIO27 ..................................................................................................................... 38 UCS/ONCE1 .................................................................................................................. 38 UZI/CLKSEL2/PIO26 ..................................................................................................... 38 VCC ................................................................................................................................ 39 WHB (Am186TMER Microcontroller Only) ...................................................................... 39 WLB (Am186TMER Microcontroller Only) ........................................................................ 39 WB (Am188TMER Microcontroller Only) ......................................................................... 39 WR ................................................................................................................................. 39 X1 ................................................................................................................................... 39 X2 ................................................................................................................................... 39 Functional Description ............................................................................................................... 40 Memory Organization ..................................................................................................... 40 I/O Space ....................................................................................................................... 40 Bus Operation ............................................................................................................................ 41 Bus Interface Unit ...................................................................................................................... 41 Nonmultiplexed Address Bus ......................................................................................... 41 Byte Write Enables ........................................................................................................ 41 Output Enable ................................................................................................................ 41 Pseudo Static RAM (PSRAM) Support .......................................................................... 44 Peripheral Control Block (PCB) ................................................................................................. 44 Reading and Writing the PCB ........................................................................................ 44 Clock and Power Management .................................................................................................. 44 Phase-Locked Loop (PLL) ............................................................................................. 44 Crystal-Driven Clock Source .......................................................................................... 45 External Source Clock ................................................................................................... 45 System Clocks ............................................................................................................... 48 Power-Save Operation ................................................................................................... 48 Initialization and Processor Reset .................................................................................. 48 Reset Configuration Register ......................................................................................... 48
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Am186TMER and Am188TMER Microcontrollers Data Sheet
Chip-Select Unit ......................................................................................................................... 49 Chip-Select Timing ......................................................................................................... 49 Ready and Wait-State Programming ............................................................................. 49 Memory Maps ................................................................................................................ 50 Chip-Select Overlap ....................................................................................................... 51 Upper Memory Chip Select ............................................................................................ 51 Low Memory Chip Select ............................................................................................... 51 Midrange Memory Chip Selects ..................................................................................... 51 Peripheral Chip Selects ................................................................................................. 52 Internal Memory ......................................................................................................................... 52 Interaction with External RAM ........................................................................................ 52 Emulator and Debug Modes .......................................................................................... 52 Refresh Control Unit .................................................................................................................. 53 Interrupt Control Unit ................................................................................................................. 53 Programming the Interrupt Control Unit ......................................................................... 53 Timer Control Unit ...................................................................................................................... 53 Watchdog Timer ........................................................................................................................ 54 Direct Memory Access ............................................................................................................... 54 DMA Operation .............................................................................................................. 55 Asynchronous Serial Port/DMA Transfers ..................................................................... 55 DMA Channel Control Registers .................................................................................... 55 DMA Priority ................................................................................................................... 55 Asynchronous Serial Port .......................................................................................................... 56 DMA Transfers through the Serial Port .......................................................................... 56 Synchronous Serial Interface ..................................................................................................... 56 Four-Pin Interface .......................................................................................................... 57 Programmable I/O (PIO) Pins .................................................................................................... 57 Low-Voltage Operation .............................................................................................................. 59 Low-Voltage Standard ................................................................................................... 59 Power Savings ............................................................................................................... 59 Input/Output Circuitry ..................................................................................................... 59 Absolute Maximum Ratings ....................................................................................................... 60 Operating Ranges ...................................................................................................................... 60 DC Characteristics Over Commercial and Industrial Operating Ranges ................................... 60 Thermal Characteristics ............................................................................................................. 61 TQFP Package .............................................................................................................. 61 Typical Ambient Temperatures ...................................................................................... 62 Commercial and Industrial Switching Characteristics and Waveforms ...................................... 67 Key to Switching Waveforms ......................................................................................... 67 Alphabetical Key to Switching Parameter Symbols ....................................................... 68 Numerical Key to Switching Parameter Symbols .......................................................... 69 Switching Characteristics over Commercial and Industrial Operating Ranges, Read Cycle (25 MHz and 33 MHz) ................................................................................ 70 Switching Characteristics over Commercial and Industrial Operating Ranges, Read Cycle (40 MHz and 50 MHz) ................................................................................ 71 Read Cycle Waveforms ................................................................................................. 72 Switching Characteristics over Commercial and Industrial Operating Ranges, Write Cycle (25 MHz and 33 MHz) ................................................................................ 73 Switching Characteristics over Commercial and Industrial Operating Ranges, Write Cycle (40 MHz and 50 MHz) ................................................................................ 74 Write Cycle Waveforms ................................................................................................. 75 Switching Characteristics over Commercial and Industrial Operating Ranges, Internal RAM Show Read Cycle (25 MHz and 33 MHz) ................................................ 76
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Am186TMER and Am188TMER Microcontrollers Data Sheet
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Switching Characteristics over Commercial and Industrial Operating Ranges, Internal RAM Show Read Cycle (40 MHz and 50 MHz) ................................................ 76 Internal RAM Show Read Cycle Waveform ................................................................... 77 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Read Cycle (25 MHz and 33 MHz) .................................................................. 78 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Read Cycle (40 MHz and 50 MHz) .................................................................. 79 PSRAM Read Cycle Waveforms ................................................................................... 80 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Write Cycle (25 MHz and 33 MHz) ................................................................... 81 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Write Cycle (40 MHz and 50 MHz) ................................................................... 82 PSRAM Write Cycle Waveforms .................................................................................... 83 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Refresh Cycle (25 MHz and 33 MHz) .............................................................. 84 Switching Characteristics over Commercial and Industrial Operating Ranges, PSRAM Refresh Cycle (40 MHz and 50 MHz) .............................................................. 85 PSRAM Refresh Cycle Waveforms ............................................................................... 86 Switching Characteristics over Commercial and Industrial Operating Ranges, Interrupt Acknowledge Cycle (25 MHz and 33 MHz) ..................................................... 87 Switching Characteristics over Commercial Operating Ranges, Interrupt Acknowledge Cycle (40 MHz and 50 MHz) ..................................................... 88 Interrupt Acknowledge Cycle Waveforms ...................................................................... 89 Switching Characteristics over Commercial and Industrial Operating Ranges, Software Halt Cycle (25 MHz and 33 MHz) ................................................................... 90 Switching Characteristics over Commercial and Industrial Operating Ranges, Software Halt Cycle (40 MHz and 50 MHz) ................................................................... 90 Software Halt Cycle Waveforms .................................................................................... 91 Switching Characteristics over Commercial and Industrial Operating Ranges, Clock (25 MHz) .............................................................................................................. 92 Switching Characteristics over Commercial and Industrial Operating Ranges, Clock (33 MHz) .............................................................................................................. 93 Switching Characteristics over Commercial and Industrial Operating Ranges, Clock (40 MHz and 50 MHz) .......................................................................................... 94 Clock Waveforms--Active Mode ................................................................................... 95 Clock Waveforms--Power-Save Mode .......................................................................... 95 Switching Characteristics over Commercial and Industrial Operating Ranges, Ready and Peripheral Timing (25 MHz and 33 MHz) .................................................... 96 Switching Characteristics over Commercial and Industrial Operating Ranges, Ready and Peripheral Timing (40 MHz and 50 MHz) .................................................... 96 Synchronous Ready Waveforms ................................................................................... 97 Asynchronous Ready Waveforms .................................................................................. 97 Peripheral Waveforms ................................................................................................... 98 Switching Characteristics over Commercial and Industrial Operating Ranges, Reset and Bus Hold (25 MHz and 33 MHz) ................................................................... 99 Switching Characteristics over Commercial and Industrial Operating Ranges, Reset and Bus Hold (40 MHz and 50 MHz) ................................................................... 99 Reset Waveforms ........................................................................................................ 100 Signals Related to Reset Waveforms .......................................................................... 100 Bus Hold Waveforms--Entering .................................................................................. 101 Bus Hold Waveforms--Leaving ................................................................................... 101 Switching Characteristics over Commercial and Industrial Operating Ranges, Synchronous Serial Interface (SSI) (25 MHz and 33 MHz) ......................................... 102
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Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges, Synchronous Serial Interface (SSI) (40 MHz and 50 MHz) ......................................... 102 Synchronous Serial Interface (SSI) Waveforms .......................................................... 103 TQFP Physical Dimensions ..................................................................................................... 104 PQFP Physical Dimensions ..................................................................................................... 105 Index ................................................................................................................................... Index-1
LIST OF FIGURES
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Am186ER 50-MHz Example System Design ......................................................... 15 Typical 80C186 System Design ............................................................................. 15 Two-Component Address Example ....................................................................... 40 Am186TMER Microcontroller Address Bus--Normal Operation ............................. 42 Am186TMER Microcontroller--Address Bus Disable in Effect ............................... 42 Am188TMER Microcontroller Address Bus--Normal Operation ............................. 43 Am188TMER Microcontroller--Address Bus Disable in Effect ............................... 43 Am186TMER and Am188TMER Microcontrollers Oscillator Configurations ............ 45 Peripheral Control Block Register Map .................................................................. 46 Clock Organization ................................................................................................ 48 ARDY and SRDY Synchronization Logic Diagram ................................................ 49 Example Memory Maps ......................................................................................... 50 DMA Unit Block Diagram ....................................................................................... 56 Synchronous Serial Interface Multiple Write .......................................................... 58 Synchronous Serial Interface Multiple Read .......................................................... 58 Thermal Resistance (C/Watt) ............................................................................... 61 Thermal Characteristics Equations ........................................................................ 61 Typical Ambient Temperatures for PQFP with Two-Layer Board .......................... 63 Typical Ambient Temperatures for TQFP with Two-Layer Board .......................... 64 Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board ..... 65 Typical Ambient Temperatures for TQFP with Four-Layer to Six-Layer Board ..... 66
LIST OF TABLES
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16.
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Related AMD Products--E86TM Family Devices ................................................... 12 Data Byte Encoding ............................................................................................... 31 Numeric PIO Pin Assignments .............................................................................. 36 Alphabetic PIO Pin Assignments ........................................................................... 36 Bus Cycle Encoding ............................................................................................... 37 Clocking Modes ..................................................................................................... 39 Segment Register Selection Rules ........................................................................ 40 Maximum and Minimum Clock Frequencies .......................................................... 44 Am186ER Microcontroller Maximum DMA Transfer Rates .................................. 55 Thermal Characteristics (C/Watt) ......................................................................... 61 Typical Power Consumption Calculation ............................................................... 62 Junction Temperature Calculation ......................................................................... 62 Typical Ambient Temperatures for PQFP with Two-Layer Board .......................... 63 Typical Ambient Temperatures for TQFP with Two-Layer Board .......................... 64 Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board ..... 65 Typical Ambient Temperatures for TQFP with Four-Layer to Six-Layer Board ..... 66
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Am186TMER and Am188TMER Microcontrollers Data Sheet
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REVISION HISTORY
Date Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 Feb. 2000 May 2000 May 2000 Rev Description D D D D D D D D D D D D D D D D D D D D D D D D Replaced block diagrams on page 2 and page 3 with updated diagrams showing that the internal data bus interfaces via the BIU and not RAM. Added new industrial parts for "Ordering Information" on page 4. Updated product listings and customer service matter on page 12 and page 13. Replaced Figure 8 on page 45 (microcontroller oscillator configurations) with updated figure. Updated several references to watchdog timer on page 54 to reflect that the WDT is inactive after reset, not active). Provided a value for the TBD in the table entitled, "DC Characteristics Over Commercial and Industrial Operating Ranges" on page 60. Updated table title and "Min" values for No. 66 in the switching characteristics table, "Read Cycle (40 MHz and 50 MHz)" on page 71. Updated table title and "Max" values for No. 87 in the switching characteristics table, "Write Cycle (40 MHz and 50 MHz)" on page 74. Updated table title and "Min" value for No. 9 (50 MHz) in the switching characteristics table, "Internal RAM Show Read Cycle (40 MHz and 50 MHz)" on page 76. Updated table title and "Min" values for No. 66 in the switching characteristics table, "PSRAM Read Cycle (40 MHz and 50 MHz)" on page 79. Updated table title and "Max" value for No. 68 (40 MHz) in the switching characteristics table, "PSRAM Write Cycle (40 MHz and 50 MHz)" on page 82.
Updated table title in the switching characteristics table, "PSRAM Refresh Cycle (40 MHz and 50 MHz)" on page 85. Updated table title in the switching characteristics table, "Software Halt Cycle (40 MHz and 50 MHz)" on page 90. Updated "Min" and "Max" values in the switching characteristics table, "Clock (33 MHz)" on page 93. Updated table title in the switching characteristics table, "Clock (40 MHz and 50 MHz)" on page 94. Updated table title in the switching characteristics table, "Ready and Peripheral Timing (40 MHz and 50 MHz)" on page 96. Updated table title in the switching characteristics table, "Reset and Bus Hold (40 MHz and 50 MHz)" on page 99. Updated table title in the switching characteristics table, "Synchronous Serial Interface (SSI) (40 MHz and 50 MHz)" on page 102. In the table "Switching Characteristics over Commercial and Industrial Operating Ranges Read Cycle (40 MHz and 50 MHz)", row 9, column "50 MHz" - "Min", the "0" is deleted. In the table "Switching Characteristics over Commercial and Industrial Operating Ranges Read Cycle (40 MHz and 50 MHz)", row 66, column "40 MHz" - "Min", the value is changed. In the table "Switching Characteristics over Commercial and Industrial Operating Ranges Read Cycle (40 MHz and 50 MHz)", row 66, column "50 MHz" - "Min", the value is changed. In the table "Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Write Cycle (40 MHz and 50 MHz)", row 68, column "40 MHz" - "Max", the value is changed. Under "Key Features and Benefits" on page 14, in the third bullet "Enhanced functionality," the feature, "a PSRAM controller" was added. Under "HOLD" on page 32, the sentence, "A HOLD request is second only to DRAM or PSRAM refresh requests in priority of activity requests received by the processor." is changed.
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Am186TMER and Am188TMER Microcontrollers Data Sheet
Date May 2000
Rev Description D Under "SRDY/PIO6" on page 38, the following sentence was added: "When SRDY is configured as P106, the internal SRDY signal is driven Low." In Table 8, "Maximum and Minimum Clock Frequencies," on page 44, the values are changed in the cell of row "Divide by 2" and column "X1/X2 Min" and in the cell of row "Divide by 2" and column "CLKOUTA Min". In "Switching Characteristics over Commercial and Industrial Operating Ranges" on page 93, Max value in the number "36" row was changed to "33." In "Switching Characteristics over Commercial and Industrial Operating Ranges" on page 94, the value in "40 MHz Max" for row number 36 was changed to "33." In "Synchronous Ready Waveforms" on page 97, the diagram was changed. In "Asynchronous Ready Waveforms" on page 97, the diagram was changed. In "BHE/ADEN", on page 31, the second paragraph under ADEN was changed. In "UZI/CLKSEL2/PIO26", on page 38, the paragraph description of UZI was changed. In "Read Cycle Waveforms" on page 72, the UZI line in the diagram was changed. In "Write Cycle Waveforms" on page 75, the UZI line in the diagram was changed.
May 2000
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May 2000 May 2000 May 2000 May 2000 May 2000 May 2000 May 2000 May 2000 May 2000 May 2000
D D D D D D D D D D
Added the diagram, Table 11, "ARDY and SRDY Synchronization Logic Diagram," on page 49. Added an index.
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Am186TMER and Am188TMER Microcontrollers Data Sheet
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E86TM FAMILY OF EMBEDDED MICROPROCESSORS AND MICROCONTROLLERS
AMD-K6TM-2E Microprocessor Am5x86(R) Microprocessor Am486(R)DX Microprocessor Am386(R)SX/DX Microprocessors ElanSC300 Microcontroller Am186CC Communications Controller Am186CH HDLC Microcontroller Am186TMCU USB Microcontroller Am186ES and Am188ES Microcontrollers Am186ESLV & Am188ESLV Microcontrollers Am186ER and Am188ER Microcontrollers ElanSC410 Microcontroller ElanSC400 Microcontroller ElanSC520 Microcontroller
ElanTMSC310 Microcontroller
Am186ED Microcontroller Am186EDLV Microcontroller
Am186EM and Am188TMEM Microcontrollers Am186EMLV & Am188EMLV Microcontrollers
80C186 and 80C188 Microcontrollers 80L186 and 80L188 Microcontrollers
E86TM Family of Embedded Microprocessors and Microcontrollers
Table 1.
Device1 80C186/80C188 80L186/80L188 Am186TMEM/Am188TMEM Am186EMLV/Am188EMLV Am186ES/Am188ES Am186ESLV/Am188ESLV Am186ED Am186EDLV
Related AMD Products--E86TM Family Devices
Am186ER/Am188ER Am186CC Am186CH Am186CU ElanSC300 ElanSC310 ElanSC400 ElanSC410 ElanSC520 Am386(R)SX Am386(R)DX Am486(R)DX Am5x86(R) AMD-K6TM-2E
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Description 16-bit microcontroller Low-voltage, 16-bit microcontroller High-performance, 16-bit embedded microcontroller High-performance, 16-bit embedded microcontroller High-performance, 16-bit embedded microcontroller High-performance, 16-bit embedded microcontroller High-performance, 80C186- and 80C188-compatible, 16-bit embedded microcontroller with 8- or 16-bit external data bus High-performance, 80C186- and 80C188-compatible, low-voltage, 16-bit embedded microcontroller with 8- or 16-bit external data bus High-performance, low-voltage, 16-bit embedded microcontroller with 32 Kbyte of internal SRAM High-performance, 16-bit embedded communications controller High-performance, 16-bit embedded HDLC microcontroller High-performance, 16-bit embedded USB microcontroller High-performance, highly integrated, low-voltage, 32-bit embedded microcontroller High-performance, single-chip, 32-bit embedded PC/AT-compatible microcontroller High-performance, single-chip, low-power, PC/AT-compatible microcontroller High-performance, single-chip, PC/AT-compatible microcontroller High-performance, single-chip, 32-bit embedded microcontroller High-performance, 32-bit embedded microprocessor with 16-bit external data bus High-performance, 32-bit embedded microprocessor with 32-bit external data bus High-performance, 32-bit embedded microprocessor with 32-bit external data bus High-performance, 32-bit embedded microprocessor with 32-bit external data bus High-performance, 32-bit embedded microprocessor with 64-bit external data bus and 3DNow!TM technology
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-- Microprocessors
-- 16- and 32-bit microcontrollers -- 16-bit microcontrollers
Notes: 1. 186 = 16-bit microcontroller and 80C186-compatible (except where noted otherwise); 188 = 16-bit microcontroller with 8-bit external data bus and 80C188-compatible (except where noted otherwise); LV = low voltage
12
Am186TMER and Am188TMER Microcontrollers Data Sheet
Related Documents
The following documents provide additional information regarding the Am186ER and Am188ER microcontrollers. n Am186ER and Am188ER Microcontrollers User's Manual, order #21684 n FusionE86SM Catalog, order #19255 n Making the Most of the Am186TMER or Am188TMER Microcontroller Application Note, order #21046 n Using the 3.3-V Am186TMER or Am188TMER Microcontroller in a 5-V System Application Note, order #21045 n Comparing the Am186TMEM and Am186ER Microcontrollers Technical Bulletin (Available only at www.amd.com/products/epd/techdocs.) n The Advantages of Integrated RAM Technical Bulletin (Available only at www.amd.com/products/ epd/techdocs.) A full description of the Am186ER and Am188ER microcontrollers' registers and instructions is included in the Am186ER and Am188ER Microcontrollers User's Manual listed above. To order literature, contact the nearest AMD sales office or call the literature center at one of the numbers listed on the back cover of this manual. In addition, all these documents are available in PDF form on the AMD web site. To access the AMD home page, go to www.amd.com. Then follow the Embedded Processor link for information about E86 microcontrollers.
In addition, mature development tools and applications for the x86 platform are widely available in the general marketplace.
Customer Service
The AMD customer service network includes U.S. offices, international offices, and a customer training center. Expert technical assistance is available from the AMD worldwide staff of field application engineers and factory support staff to answer E86 and Comm86 family hardware and software development questions. Hotline and World Wide Web Support For answers to technical questions, AMD provides e-mail support as well as a toll-free number for direct access to our corporate applications hotline.
Note: The support telephone numbers listed below are subject to change. For current telephone numbers, refer to www.amd.com/support/literature.
The AMD World Wide Web home page provides the latest product information, including technical information and data on upcoming product releases. In addition, EPD CodeKit software on the Web site provides tested source code example applications. Corporate Applications Hotline
Demonstration Board Products
The SD186ER demonstration board product is a standalone, low-cost evaluation platform for the Am186ER microcontroller. The SD186ER board demonstrates the basic processor functionality and features of the Am186ER microcontroller and the simplicity of its system design. The SD186ER demonstration board is designed with the Am186/Am188 expansion interface that provides access to the Am186ER microcontroller signals. The 104-pin expansion interface facilitates prototyping by enabling the demonstration board to be used as the minimal system core of a design. Contact your local AMD sales office for more information on demonstration board availability and pricing.
D
R
A
(800) 222-9323
44-(0) 1276-803-299
T F
Toll-free for U.S. and Canada
U.K. and Europe hotline
Additional contact information is listed on the back of this datasheet. For technical support questions on all E86 and Comm86 products, send e-mail to epd.support@amd.com. World Wide Web Home Page To access the AMD home page go to: www.amd.com. Then follow the Embedded Processors link for information about E86 family and Comm86TM products. Questions, requests, and input concerning AMD's WWW pages can be sent via e-mail to webmaster@amd.com. Documentation and Literature Free information such as data books, user's manuals, data sheets, application notes, the E86TM Family Products and Development Tools CD, order #21058, and other literature is available with a simple phone call. Internationally, contact your local AMD sales office for product literature. Additional contact information is listed on the back of this data sheet. Literature Ordering (800) 222-9323 Toll-free for U.S. and Canada
Third-Party Development Support Products
The FusionE86 Program of Partnerships for Application Solutions provides the customer with an array of products designed to meet critical time-to-market needs. Products and solutions available from the AMD FusionE86 partners include protocol stacks, emulators, hardware and software debuggers, board-level products, and software development tools, among others.
Am186TMER and Am188TMER Microcontrollers Data Sheet
13
KEY FEATURES AND BENEFITS
The Am186ER and Am188ER microcontrollers are higher-performance, highly integrated versions of the 80C186/80C188 microprocessors, offering a migration path that was previously unavailable. New peripherals, on-chip system interface logic, and 32 Kbyte of internal memory on the Am186ER microcontroller reduce the cost of existing 80C186/80C188 designs. Upgrading to the Am186ER microcontroller is an attractive solution for several reasons: n Integrated SRAM--32 Kbyte of internal SRAM ensures a low-cost supply of memory and a smaller form factor for system designs. The internal memory provides the same performance as external zero-wait-state SRAM devices. n 3.3-V operation with 5-V-tolerant I/O--3.3-V operation provides much lower power consumption when compared to existing 5-V designs. Plus, the Am186ER and Am188ER controllers accommodate current 5-V designs with 5-V-tolerant I/O drivers. n x86 software compatibility--80C186/80C188compatible and upward-compatible with the other members of the AMD E86 family. n Enhanced performance--The Am186ER and Am188ER microcontrollers increase the performance of 80C186/80C188 systems, and the nonmultiplexed address bus offers faster, unbuffered access to commodity-speed, external memory. functionality--Enhanced on-chip n Enhanced peripherals include an asynchronous serial port, up to 32 PIOs, a hardware watchdog timer, an additional interrupt pin, a synchronous serial interface, a PSRAM controller, a 16-bit reset configuration register, and enhanced chip-select functionality.
system form factor, decreased system power, stable RAM supply, and lower system cost compared with buying external SRAM. The integrated RAM also ensures that an entire embedded system will not require requalification based on the short life cycles of external SRAM. Additionally, for those systems using more RAM than required because of the granularity of external RAM, the Am186ER microcontroller provides a closer system match. Clock Generation The integrated clock generation circuitr y of the Am186ER and Am188ER microcontrollers enables the processors to operate at up to four times the crystal frequency. The design in Figure 1 achieves 50-MHz CPU operation while using a 12.5-MHz crystal. The clocking frequency function is controlled by an internal PLL. The following modes are available (see Figure 10 on page 48): n Divide by Two--The frequency of the fundamental clock is half the frequency of the crystal with the PLL disabled. n Times One--The frequency of the fundamental clock will be the same as the external crystal with the PLL enabled.
Application Considerations
The integration enhancements of the Am186ER microcontroller provide a high-performance, low-systemcost solution for 16-bit embedded microcontroller designs. Both multiplexed and nonmultiplexed address buses are available on the Am186ER and Am188ER microcontrollers. The nonmultiplexed address bus eliminates system-support logic ordinarily needed to interface with external memory devices, while the multiplexed address/data bus maintains the value of previously engineered, customer-specific peripherals and circuits within the upgraded design. Figure 1 on page 15 illustrates an example system design that uses the integrated peripheral set to achieve high performance with reduced system cost. Internal Memory The 32-Kbyte internal RAM fulfills the memory requirements for many embedded systems. These systems can take advantage of the increased reliability, smaller
D
R
A
n Times Four--The frequency of the fundamental clock is four times the frequency of the crystal with the PLL enabled. The default mode is Times Four. Memory Interface
T F
The integrated memor y controller logic of the Am186ER and Am188ER microcontrollers provides a direct address bus to memory devices. Using an external address latch controlled by the address latch enable (ALE) signal is no longer necessary. Individual byte-write-enable signals on the Am186ER and Am188ER microcontrollers eliminate the need for external high/low byte-write-enable circuitry. The maximum bank size programmable for the memory chipselect signals is increased to facilitate the use of highdensity memory devices. The improved memory timing specifications for the Am186ER and Am188ER microcontrollers facilitate the use of external memory devices with 55-ns access times at 50-MHz CPU operation. As a result, overall system cost is significantly reduced as system designers are able to use commonly available memory technology.
14
Am186TMER and Am188TMER Microcontrollers Data Sheet
Direct Memory Interface Example Figure 1 illustrates the direct interface to memory of the Am186ER microcontroller. The A19-A0 bus connects to the memory address inputs, the AD bus connects to the data inputs and outputs, and the chip selects connect to the memory chip-select inputs. Figure 1 also shows an implementation of an RS-232 console or modem communications port. The RS-232to-CMOS voltage-level converter is required for the electrical interface with the external device.
Am186ER Microcontroller
12.5-MHz Crystal X2 X1 WR A19-A0 AD15-AD0 RD UCS 32 Kbyte SRAM Timer 0-2
Am29F400 Flash
WE Address Data OE CS
COMPARISON OF THE Am186TMER AND 80C186 MICROCONTROLLERS
Figure 1 shows an example system using a 50-MHz Am186ER microcontroller. Figure 2 shows a comparable system implementation with an 80C186 microcontroller. Because of its superior integration, the Am186ER system does not require the support devices required on the 80C186 example system. In addition, the Am186ER microcontroller provides significantly better performance with its 50-MHz clock rate.
Serial Port
RS-232 Level Converter TXD RXD
INT4-INT0 DMA 0-1 CLKOUTA 50 MHz
Figure 1. Am186TMER 50-MHz Example System Design
40-MHz Crystal
X1
PAL
X2
BHE A0
D
R
Figure 2.
WR
LATCH
ALE
AD15-AD0 RD
A
WE Data CS
LATCH
Am29F400 Flash
Address
T F
SRAM
WE WE Address Data OE CS
RS-232 Level Converter
OE
UCS LCS
PIOs Serial Port
PCS0 Timer 0-2 INT3 INT2-INT0 DMA 0-1 CLKOUT
20 MHz
Typical 80C186 System Design
Am186TMER and Am188TMER Microcontrollers Data Sheet
15
TQFP CONNECTION DIAGRAM AND PINOUTS--Am186TMER MICROCONTROLLER Top Side View--100-Pin Thin Quad Flat Pack (TQFP)
INT3/INTA 1/IRQ 76 75 74 73 72 INT0 INT1/ SELECT INT2/INTA 0 79 78 77 UCS / ONCE1 80 PCS 5/A1 PCS 6/A2 LCS / ONCE 0 83 82 81 MCS3/ RFSH
DRQ1 TMRIN0 TMROUT0
TMROUT1 TMRIN1
MCS2 VCC
DRQ0
PCS 0
PCS 1 88
100
99 98 97
96 95
94 93
92
91 90 89
87 86 85
84
GND PCS 2 PCS 3 VCC
RES GND
AD0 AD8 AD1 AD9 AD2 AD10 AD3 AD11 AD4 AD12 AD5 GND AD13 AD6 VCC AD14 AD7 AD15 S6/CLKSEL1 UZI/CLKSEL2 TXD RXD SDATA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
INT4 MCS1 MCS0 DEN DT/R NMI SRDY HOLD HLDA WLB WHB GND A0 A1 VCC A2 A3 A4 A5 A6 A7 A8 A9 A10 A11
Am186ER Microcontroller
SDEN1 SDEN0
BHE/ADEN WR RD ALE ARDY
CLKOUTB GND A19 A18
S0/SREN GND X1 X2
Notes: Pin 1 is marked for orientation.
16
Am186TMER and Am188TMER Microcontrollers Data Sheet
VCC CLKOUTA
S1/IMDIS
D
26 27 SCLK
30 31
42 43
44 45
46 47
48 49 A14 A13
28 29
32 33
34 35
36 37
38 39
40 41
VCC A17
A16 A15
A12
S2
50
R
A
T F
69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
71 70
TQFP PIN ASSIGNMENTS--Am186TMER MICROCONTROLLER (Sorted by Pin Number)
Pin No. Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 AD0 AD8 AD1 AD9 AD2 AD10 AD3 AD11 AD4 AD12 AD5 GND AD13 AD6 VCC AD14 AD7 AD15 S6/CKLSEL1/PIO29 UZI/CLKSEL2/PIO26 TXD RXD SDATA/PIO21 Pin No. Name 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SCLK/PIO20 BHE/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19/PIO9 A18/PIO8 VCC Pin No. Name 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 VCC A1 A0 GND WHB WLB HLDA HOLD Pin No. Name 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 INT3/INTA1/IRQ INT2/INTA0 INT1/SELECT INT0 UCS/ONCE1 LCS/ONCE0 PCS6/A2/PIO2 PCS5/A1/PIO3 VCC PCS3/PIO19 PCS2/PIO18 GND
SDEN1/PIO23 SDEN0/PIO22
D
R
A17/PIO7 A16 A15 A14 A13 A12
A
SRDY/PIO6 NMI DT/R/PIO4 DEN/PIO5
T F
PCS1/PIO17 PCS0/PIO16 VCC MCS2 MCS3/RFSH GND RES TMRIN1/PIO0 TMROUT1/PIO1 TMROUT0/PIO10 TMRIN0/PIO11 DRQ1/PIO13 DRQ0/PIO12
MCS0/PIO14 MCS1/PIO15 INT4
Am186TMER and Am188TMER Microcontrollers Data Sheet
17
TQFP PIN ASSIGNMENTS--Am186TMER MICROCONTROLLER (Sorted by Pin Name)
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/PIO7 A18/PIO8 A19/PIO9 AD0 AD1 AD2 AD3 AD4 No. 63 62 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 43 42 1 3 5 7 9 Pin Name AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 ALE ARDY BHE/ADEN CLKOUTA CLKOUTB DEN/PIO5 DRQ0/PIO12 DRQ1/PIO13 DT/R/PIO4 GND GND GND GND GND No. 11 14 17 2 4 6 8 10 13 16 18 30 31 27 39 40 72 100 99 71 12 35 41 64 87 Pin Name GND HLDA HOLD INT0 INT1/SELECT INT2/INTA0 INT3/INTA1/IRQ INT4 LCS/ONCE0 MCS0/PIO14 MCS1/PIO15 MCS2 MCS3/RFSH NMI PCS0/PIO16 PCS1/PIO17 PCS2/PIO18 PCS3/PIO19 No. 93 67 68 79 78 77 76 75 81 73 74 91 92 70 89 88 86 85 83 82 29 94 22 34 33 Pin Name S2 S6/CLKSEL1/PIO29 SCLK/PIO20 SDATA/PIO21 SDEN0/PIO22 SDEN1/PIO23 SRDY/PIO6 TMRIN0/PIO11 TMRIN1/PIO0 TMROUT0/PIO10 TMROUT1/PIO1 TXD No. 32 19 26 23 25 24 69 98 95 97 96 21 80 20 15 38 44 61 84 90 65 66 28 36 37
PCS5/A1/PIO3 PCS6/A2/PIO2 RD
D
R
RES
A
T F
UCS/ONCE1 UZI/CLKSEL2/PIO26 VCC VCC VCC VCC VCC VCC WHB WLB WR X1 X2
RXD S0/SREN S1/IMDIS
18
Am186TMER and Am188TMER Microcontrollers Data Sheet
TQFP CONNECTION DIAGRAM AND PINOUTS--Am188TMER MICROCONTROLLER Top Side View--100-Pin Thin Quad Flat Pack (TQFP)
INT2/INTA 0 INT3/INTA 1/IRQ 77 76 75 74 73 72 INT0 INT1/ SELECT 79 78 LCS / ONCE 0 UCS / ONCE1 81 80 GND MCS3/ RFSH
TMROUT0 TMROUT1 TMRIN1
DRQ1 TMRIN0
MCS2 VCC
100
99 98
97 96 95
94
93 92
91 90
89 88
87 86
85 84
PCS 3 VCC
AD0 AO8 AD1 AO9 AD2 AO10 AD3 AO11 AD4 AO12 AD5 GND AO13 AD6 VCC AO14 AD7 AO15 S6/CLKSEL1 UZI/CLKSEL2 TXD RXD SDATA SDEN1 SDEN0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
83 82
PCS 5/A1 PCS 6/A2
DRQ0
PCS 0 PCS 1
GND PCS 2
RES
INT4 MCS1 MCS0 DEN DT/R NMI SRDY HOLD HLDA WB GND GND A0 A1 VCC A2 A3 A4 A5 A6 A7 A8 A9 A10 A11
Am188ER Microcontroller
RFSH2/ADEN WR
S1/IMDIS S0/SREN GND X1 X2
CLKOUTB GND A19
Notes: Pin 1 is marked for orientation.
Am186TMER and Am188TMER Microcontrollers Data Sheet
VCC CLKOUTA
D
23 24 25 26 SCLK
31 32
41 42
43 44
45 46
47 48
27 28
29 30
33 34
35 36
37 38
RD ALE
39 40
A18
VCC A17 A16
A15 A14
ARDY
A13 A12
S2
49 50
R
A
T F
69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
71 70
19
TQFP PIN ASSIGNMENTS--Am188TMER MICROCONTROLLER (Sorted by Pin Number)
Pin No. Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 AD0 AO8 AD1 AO9 AD2 AO10 AD3 AO11 AD4 AO12 AD5 GND AO13 AD6 VCC AO14 AD7 AO15 S6/CLKSEL1/PIO29 UZI/CLKSEL2/PIO26 TXD/PIO27 RXD/PIO28 SDATA/PIO21 Pin No. Name 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SCLK/PIO20 RFSH2/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19/PIO9 A18/PIO8 VCC Pin No. Name 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 VCC A1 A0 GND GND WB HLDA HOLD Pin No. Name 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 INT3/INTA1/IRQ INT2/INTA0/PIO31 INT1/SELECT INT0 UCS/ONCE1 LCS/ONCE0 PCS6/A2/PIO2 PCS5/A1/PIO3 VCC PCS3/PIO19 PCS2/PIO18 GND
SDEN1/PIO23 SDEN0/PIO22
D
R
A16 A15 A14 A13 A12
A17/PIO7
A
SRDY/PIO6 NMI DT/R/PIO4 DEN/PIO5
T F
PCS1/PIO17 PCS0/PIO16 VCC MCS2/PIO24 GND RES DRQ1/PIO13 DRQ0/PIO12
MCS3/RFSH/PIO25
TMRIN1/PIO0 TMROUT1/PIO1 TMROUT0/PIO10 TMRIN0/PIO11
MCS0/PIO14 MCS1/PIO15 INT4/PIO30
20
Am186TMER and Am188TMER Microcontrollers Data Sheet
TQFP PIN ASSIGNMENTS--Am188TMER MICROCONTROLLER (Sorted by Pin Name)
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/PIO7 A18/PIO8 A19/PIO9 AD0 AD1 AD2 AD3 AD4 No. 63 62 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 43 42 1 3 5 7 9 Pin Name AD5 AD6 AD7 ALE AO8 AO9 AO10 AO11 AO12 AO13 AO14 AO15 ARDY CLKOUTA CLKOUTB DEN/PIO5 DRQ0/PIO12 DRQ1/PIO13 DT/R/PIO4 GND GND GND GND GND GND No. 11 14 17 30 2 4 6 8 10 13 16 18 31 39 40 72 100 99 71 12 35 41 64 65 87 Pin Name GND HLDA HOLD INT0 INT1/SELECT INT2/INTA0/PIO31 INT3/INTA1/IRQ INT4/PIO30 LCS/ONCE0 MCS0/PIO14 MCS1/PIO15 MCS2/PIO24 MCS3/RFSH/PIO25 NMI PCS0/PIO16 No. 93 67 68 79 78 77 76 75 81 73 74 91 92 70 89 88 86 85 83 82 29 94 27 22 34 Pin Name S1/IMDIS S2 S6/CLKSEL1/PIO29 SCLK/PIO20 SDATA/PIO21 SDEN0/PIO22 SDEN1/PIO23 SRDY/PIO6 TMRIN0/PIO11 TMRIN1/PIO0 No. 33 32 19 26 23 25 24 69 98 95 97 96 21 80 20 15 38 44 61 84 90 66 28 36 37
D
R
A
PCS2/PIO18 PCS3/PIO19 PCS5/A1/PIO3 PCS6/A2/PIO2 RD RES RFSH2/ADEN RXD/PIO28 S0/SREN
PCS1/PIO17
T F
TMROUT0/PIO10 TMROUT1/PIO1 TXD/PIO27 UCS/ONCE1 UZI/CLKSEL2 VCC VCC VCC VCC VCC VCC WB WR X1 X2
Am186TMER and Am188TMER Microcontrollers Data Sheet
21
PQFP CONNECTION DIAGRAM AND PINOUTS--Am186TMER MICROCONTROLLER Top Side View--100-Pin Plastic Quad Flat Pack (PQFP)
UZI/CLKSEL2 S6/CLKSEL1
SDATA RXD TXD
AD12 AD4
AD7 AD14
AD15
AD13
100
99
98
97
96
95
94
93
92
91
90
89
88
GND AD5
AD6
87
86
85
84
AD11 AD3
83
82
81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
SDEN1 SDEN0 SCLK BHE/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19 A18 VCC A17 A16 A15 A14 A13
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
A12 A11 A10 A9
D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AD10 AD2 AD9
VCC
Am186ER Microcontroller
R
VCC A1 A6 A5 A4 A3 A2
A
HLDA WHB WLB A0 GND
T F
RES GND MCS2 VCC PCS0 PCS1 GND PCS2 PCS3 VCC MCS1 SRDY NMI DT/R DEN MCS0
AD1 AD8 AD0 DRQ0 DRQ1 TMRIN0 TMROUT0 TMROUT1 TMRIN1
MCS3/RFSH
PCS5/A1 PCS6/A2 LCS/ONCE0 UCS/ONCE1 INT0 INT1/SELECT INT2/INTA0 INT3/INTA1/IRQ INT4
Notes: Pin 1 is marked for orientation.
22
Am186TMER and Am188TMER Microcontrollers Data Sheet
HOLD
A8 A7
PQFP PIN ASSIGNMENTS--Am186TMER MICROCONTROLLER (Sorted by Pin Number)
Pin No. Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 SDEN1/PIO23 SDEN0/PIO22 SCLK/PIO20 BHE/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19/PIO9 A18/PIO8 VCC A17/PIO7 A16 A15 A14 Pin No. Name 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 VCC A1 A0 GND WHB WLB HLDA Pin No. Name 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 MCS1/PIO15 INT4/PIO30 INT3/INTA1/IRQ INT2/INTA0/PIO31 INT1/SELECT INT0 UCS/ONCE1 LCS/ONCE0 PCS6/A2/PIO2 PCS5/A1/PIO3 VCC PCS3/PIO19 PCS2/PIO18 GND PCS1/PIO17 PCS0/PIO16 VCC Pin No. Name 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 DRQ1/PIO13 DRQ0/PIO12 AD0 AD8 AD1 AD9 AD2 AD10 AD3 AD11 AD4
D
R
HOLD SRDY/PIO6 NMI DT/R/PIO4 DEN/PIO5 MCS0/PIO14
A
GND RES
MCS2/PIO24
MCS3/RFSH/PIO25
T F
AD12 AD5 GND AD13 AD6 VCC AD14 AD7 AD15 S6/CLKSEL1/PIO29 UZI/CLKSEL2/PIO26 TXD/PIO27 RXD/PIO28 SDATA/PIO21
TMRIN1/PIO0 TMROUT1/PIO1 TMROUT0/PIO10 TMRIN0/PIO11
Am186TMER and Am188TMER Microcontrollers Data Sheet
23
PQFP PIN ASSIGNMENTS--Am186TMER MICROCONTROLLER (Sorted by Pin Name)
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/PIO7 A18/PIO8 A19/PIO9 AD0 AD1 AD2 AD3 AD4 No. 40 39 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 20 19 78 80 82 84 86 Pin Name AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 ALE ARDY BHE/ADEN CLKOUTA CLKOUTB DEN/PIO5 DRQ0/PIO12 DRQ1/PIO13 DT/R/PIO4 GND GND GND GND GND No. 88 91 94 79 81 83 85 87 90 93 95 7 8 4 16 17 49 77 76 48 12 18 41 64 70 Pin Name GND HLDA HOLD INT0 INT1/SELECT INT2/INTA0/PIO31 INT3/INTA1/IRQ INT4/PIO30 LCS/ONCE0 MCS0/PIO14 MCS1/PIO15 MCS2/PIO24 MCS3/RFSH/PIO25 NMI PCS0/PIO16 No. 89 44 45 56 55 54 53 52 58 50 51 68 69 47 66 65 63 62 60 59 6 71 99 11 10 Pin Name S2 S6/CLKSEL1/PIO29 SCLK/PIO20 SDATA/PIO21 SDEN0/PIO22 SDEN1/PIO23 SRDY/PIO6 TMRIN0/PIO11 TMRIN1/PIO0 TMROUT0/PIO10 TMROUT1/PIO1 TXD/PIO27 No. 9 96 3 100 2 1 46 75 72 74 73 98 57 97 15 21 38 61 67 92 42 43 5 13 14
D
R
A
PCS2/PIO18 PCS3/PIO19 PCS5/A1/PIO3 PCS6/A2/PIO2 RD RES RXD/PIO28 S0/SREN S1/IMDIS
PCS1/PIO17
T F
UCS/ONCE1 UZI/CLKSEL2/PIO26 VCC VCC VCC VCC VCC VCC WHB WLB WR X1 X2
24
Am186TMER and Am188TMER Microcontrollers Data Sheet
PQFP CONNECTION DIAGRAM AND PINOUTS--Am188TMER MICROCONTROLLER Top Side View--100-Pin Plastic Quad Flat Pack (PQFP)
UZI/CLKSEL2 S6/CLKSEL1
SDATA RXD TXD
AD12 AD4
AD7 AD14
AD15
AD13
100
99
98
97
96
95
94
93
92
91
90
89
88
GND AD5
AD6
87
86
85
84
AD11 AD3
83
82
81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
SDEN1 SDEN0 SCLK RFSH2/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19 A18 VCC A17 A16 A15 A14 A13
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
A12 A11 A10 A9
D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AD10 AD2 AD9
VCC
Am188ER Microcontroller
R
VCC A1 A6 A5 A4 A3 A2
A
HLDA A0 GND GND WB
T F
RES GND MCS2 VCC PCS0 PCS1 GND PCS2 PCS3 VCC MCS1 SRDY NMI DT/R DEN MCS0
AD1 AD8 AD0 DRQ0 DRQ1 TMRIN0 TMROUT0 TMROUT1 TMRIN1
MCS3/RFSH
PCS5/A1 PCS6/A2 LCS/ONCE0 UCS/ONCE1 INT0 INT1/SELECT INT2/INTA0 INT3/INTA1/IRQ INT4
Notes: Pin 1 is marked for orientation.
Am186TMER and Am188TMER Microcontrollers Data Sheet
HOLD
A8 A7
25
PQFP PIN ASSIGNMENTS--Am188TMER MICROCONTROLLER (Sorted by Pin Number)
Pin No. Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 SDEN1/PIO23 SDEN0/PIO22 SCLK/PIO20 RFSH2/ADEN WR RD ALE ARDY S2 S1/IMDIS S0/SREN GND X1 X2 VCC CLKOUTA CLKOUTB GND A19/PIO9 A18/PIO8 VCC A17/PIO7 A16 A15 A14 Pin No. Name 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 VCC A1 A0 GND GND WB HLDA Pin No. Name 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 MCS1/PIO15 INT4/PIO30 INT3/INTA1/IRQ INT2/INTA0/PIO31 INT1/SELECT INT0 UCS/ONCE1 LCS/ONCE0 PCS6/A2/PIO2 PCS5/A1/PIO3 VCC PCS3/PIO19 PCS2/PIO18 GND PCS1/PIO17 PCS0/PIO16 VCC Pin No. Name 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 DRQ1/PIO13 DRQ0/PIO12 AD0 AO8 AD1 AO9 AD2 AO10 AD3 AO11 AD4
D
R
HOLD SRDY/PIO6 NMI DT/R/PIO4 DEN/PIO5 MCS0/PIO14
A
GND RES
MCS2/PIO24
MCS3/RFSH/PIO25
T F
AO12 AD5 GND AO13 AD6 VCC AO14 AD7 AO15 S6/CLKSEL1/PIO29 UZI/CLKSEL2/PIO26 TXD/PIO27 RXD/PIO28 SDATA/PIO21
TMRIN1/PIO0 TMROUT1/PIO1 TMROUT0/PIO10 TMRIN0/PIO11
26
Am186TMER and Am188TMER Microcontrollers Data Sheet
PQFP PIN ASSIGNMENTS--Am188TMER MICROCONTROLLER (Sorted by Pin Name)
Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/PIO7 A18/PIO8 A19/PIO9 AD0 AD1 AD2 AD3 AD4 No. 40 39 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 20 19 78 80 82 84 86 Pin Name AD5 AD6 AD7 ALE AO8 AO9 AO10 AO11 AO12 AO13 AO14 AO15 ARDY CLKOUTA CLKOUTB DEN/PIO5 DRQ0/PIO12 DRQ1/PIO13 DT/R/PIO4 GND GND GND GND GND GND No. 88 91 94 7 79 81 83 85 87 90 93 95 8 16 17 49 77 76 48 12 18 41 42 64 70 Pin Name GND HLDA HOLD INT0 INT1/SELECT INT2/INTA0/PIO31 INT3/INTA1/IRQ INT4/PIO30 LCS/ONCE0 MCS0/PIO14 MCS1/PIO15 MCS2/PIO24 MCS3/RFSH/PIO25 NMI PCS0/PIO16 PCS1/PIO17 PCS2/PIO18 PCS3/PIO19 No. 89 44 45 56 55 54 53 52 58 50 51 68 69 47 66 65 63 62 60 59 6 71 4 99 11 Pin Name S1/IMDIS S2 S6/CLKSEL1/PIO29 SCLK/PIO20 SDATA/PIO21 SDEN0/PIO22 SDEN1/PIO23 SRDY/PIO6 TMRIN0/PIO11 TMRIN1/PIO0 No. 10 9 96 3 100 2 1 46 75 72 74 73 98 57 97 15 21 38 61 67 92 43 5 13 14
PCS5/A1/PIO3 PCS6/A2/PIO2 RD
D
R
RES
A
T F
TMROUT0/PIO10 TMROUT1/PIO1 TXD/PIO27 UCS/ONCE1 UZI/CLKSEL2/PIO26 VCC VCC VCC VCC VCC VCC WB WR X1 X2
RFSH2/ADEN RXD/PIO28 S0/SREN
Am186TMER and Am188TMER Microcontrollers Data Sheet
27
LOGIC SYMBOL--Am186TMER MICROCONTROLLER
X1 X2 Clocks CLKOUTA CLKOUTB RES INT4 INT3/INTA1/IRQ INT2/INTA0 INT1/SELECT INT0 * Address and Address/Data Buses * * 20 16 A19-A0 AD15-AD0 S6/CLKSEL1 UZI/CLKSEL2 ALE S2 S1/IMDIS S0/SREN HOLD HLDA RD WR Bus Control * * DT/R DEN PCS6/A2 PCS5/A1 4 * * * NMI * * Reset Control and Interrupt Service
PCS3-PCS0 LCS/ONCE0
MCS3/RFSH MCS2-MCS0 UCS/ONCE1
*
Timer Control
D
* * * * 32 shared **
R
ARDY SRDY BHE/ADEN WHB WLB TMRIN0 TMROUT0 TMRIN1 TMROUT1 PIO32-PIO0
A
T F
* * 3 2 * TXD RXD * * 2 * * * SCLK
Memory and Peripheral Control
DRQ1-DRQ0
DMA Control
Asynchronous Serial Port Control
SDEN1-SDEN0
Programmable I/O Control
Synchronous Serial Port Control
SDATA
Notes: * These signals are the normal function of a pin that can be used as a PIO. See the pin descriptions beginning on page 30 and Table 3 on page 36 for information on shared function. ** All PIO signals are shared with other physical pins.
28
Am186TMER and Am188TMER Microcontrollers Data Sheet
LOGIC SYMBOL--Am188TMER MICROCONTROLLER
X1 X2 Clocks CLKOUTA CLKOUTB RES INT4 INT3/INTA1/IRQ INT2/INTA0 INT1/SELECT INT0 * Address and Address/Data Buses * * 20 8 8 A19-A0 NMI AO15-AO8 AD7-AD0 S6/CLKSEL1 UZI/CLKSEL2 ALE S2 S1/IMDIS S0/SREN HOLD HLDA RD Bus Control * * WR PCS6/A2 PCS5/A1 4 * * * * * Reset Control and Interrupt Service
PCS3-PCS0 LCS/ONCE0
MCS3/RFSH MCS2-MCS0 UCS/ONCE1
Timer Control
D
* * * * 32 shared **
*
R
DEN ARDY SRDY RFSH2/ADEN WB TMRIN0 TMROUT0 TMRIN1 TMROUT1 PIO31-PIO0
DT/R
A
T F
* * 3 2 * TXD RXD * * 2 * * * SCLK
Memory and Peripheral Control
DRQ1-DRQ0
DMA Control
Asynchronous Serial Port Control
SDEN1-SDEN0
Programmable I/O Control
Synchronous Serial Port Control
SDATA
Notes: * These signals are the normal function of a pin that can be used as a PIO. See the pin descriptions beginning on page 30 and Table 3 on page 36 for information on shared function. ** All PIO signals are shared with other physical pins.
Am186TMER and Am188TMER Microcontrollers Data Sheet
29
PIN DESCRIPTIONS Pins Used by Emulators
The following pins are used by emulators: A19-A0, AO15-AO8, AD7-AD0, ALE, BHE/ADEN (on the Am186ER microcontroller), CLKOUTA, RFSH2/ADEN (on the Am188ER microcontroller), RD, S2, S1/IMDIS, S0/SREN, S6/CLKSEL1, and UZI/CLKSEL2. Emulators require that S6/CLKSEL1 and UZI/ CLKSEL2 be configured in their normal functionality, that is, as S6 and UZI. If BHE/ADEN (on the Am186ER microcontroller) or RFSH2/ADEN (on the Am188ER microcontroller) is held Low during the rising edge of RES, S6 and UZI are configured in their normal functionality and cannot be programmed as PIOs.
During a power-on reset, the address and data bus pins (AD15-AD0 for the Am186ER microcontroller, AO15-AO8 and AD7-AD0 for the Am188ER microcontroller) can also be used to load system configuration information into the internal reset configuration register. The system information is latched on the rising edge of RES.
AD15-AD8 (Am186TMER Microcontroller)
Address and Data Bus (input/output, three-state, synchronous, level-sensitive) These time-multiplexed pins supply partial memory or I/O addresses, as well as data, to the system. AD15- AD8 supply the high-order 8 bits of an address to the system during the first period of a bus cycle (t1). On a write, these pins supply data to the system during the remaining periods of that cycle (t 2, t3, and t4). On a read, these pins latch data at the end of t3. Also, if S0/SREN (show read enable) was pulled Low during reset or if the SR bit is set in the Internal Memory Chip Select (IMCS) Register, these pins supply the data read from internal memory during t3 and t4. On the Am186ER microcontroller, AD15-AD8 combine with AD7-AD0 to form a complete multiplexed address and 16-bit data bus.
A19-A0 (A19/PIO9, A18/PIO8, A17/PIO7)
Address Bus (output, three-state, synchronous) These pins supply nonmultiplexed memory or I/O addresses to the system one-half of a CLKOUTA period earlier than the multiplexed address and data bus (AD15-AD0 on the Am186ER microcontroller or AO15-AO8 and AD7-AD0 on the Am188ER microcontroller). During a bus hold or reset condition, the address bus is in a high-impedance state.
AD7-AD0
Address and Data Bus (input/output, three-state, synchronous, level-sensitive) These time-multiplexed pins supply partial memory or I/O addresses, as well as data, to the system. AD7- AD0 supply the low-order 8 bits of an address to the system during the first period of a bus cycle (t1). On a write, these pins supply data to the system during the remaining periods of that cycle (t2, t3, and t4). On a read, these pins latch data at the end of t3. Also, if S0/SREN (show read enable) was pulled Low during reset or if the SR bit is set in the Internal Memory Chip Select (IMCS) Register, these pins supply the data read from internal memory during t3 and t4. On the Am186ER microcontroller, AD7-AD0 combine with AD15-AD8 to form a complete multiplexed address and 16-bit data bus. On the Am188ER microcontroller, AD7-AD0 combine with AO15-AO8 to form a complete multiplexed address bus while AD7-AD0 is the 8-bit data bus. The address phase of these pins can be disabled. See the ADEN description with the BHE/ADEN pin. When WLB is negated, these pins are three-stated during t2, t3, and t4. During a bus hold or reset condition, the address and data bus are in a high-impedance state.
D
R
A
The address phase of these pins can be disabled. See the ADEN description with the BHE/ADEN pin. When WHB is negated, these pins are three-stated during t2, t3, and t4. During a bus hold or reset condition, the address and data bus is in a high-impedance state. During a power-on reset, the address and data bus pins (AD15-AD0 for the Am186ER microcontroller, AO15-AO8 and AD7-AD0 for the Am188ER microcontroller) can also be used to load system configuration information into the internal reset configuration register. The system information is latched on the rising edge of RES.
T F
AO15-AO8 (Am188TMER Microcontroller)
Address-Only Bus (output, three-state, synchronous, level-sensitive) On the Am188ER microcontroller, the address-only bus (AO15-AO8) contains valid high-order address bits from bus cycles t1-t4. These outputs are three-stated during a bus hold or reset. On the Am188ER microcontroller, AO15-AO8 combine with AD7-AD0 to form a complete multiplexed address bus while AD7-AD0 is the 8-bit data bus. On the Am188ER microcontroller during a power-on reset, the AO15-AO8 and AD7-AD0 pins can also be used to load system configuration information into an internal register for later use.
30
Am186TMER and Am188TMER Microcontrollers Data Sheet
ALE
Address Latch Enable (output, synchronous) This pin indicates to the system that an address appears on the address and data bus (AD15-AD0 for the Am186ER microcontroller or AO15-AO8 and AD7-AD0 for the Am188ER microcontroller). The address is guaranteed valid on the trailing edge of ALE. This pin is three-stated during ONCE mode.
reason, the A0 signal cannot be used in place of the AD0 signal to determine refresh cycles. PSRAM refreshes also provide an additional RFSH signal (see the MCS3/RFSH pin description on page 33). ADEN--If BHE/ADEN is held High or left floating during power-on reset, the address portion of the AD bus (AD15-AD0) is enabled or disabled during LCS and UCS bus cycles based on the DA bit in the LMCS and UMCS registers. If the DA bit is set, the memory address is accessed on the A19-A0 pins. This mode of operation reduces power consumption. For more information, see the Bus Operation section on page 41. There is a weak internal pullup resistor on BHE/ADEN so no external pullup is required. If BHE/ADEN is held Low on power-on reset, the AD bus drives both addresses and data. Changing the DA bit of the LMCS and UMCS registers will have no effect. (S6 and UZI also assume their normal functionality in this instance. The PIO Mode and Direction registers cannot reconfigure these pins as PIOs. See Table 3 on page 36.) The pin is sampled within three crystal clock cycles after the rising edge of RES. BHE/ADEN is three-stated during bus holds and ONCE mode.
ARDY
Asynchronous Ready (input, asynchronous, level-sensitive) This pin indicates to the microcontroller that the addressed memory space or I/O device will complete a data transfer. The ARDY pin accepts a rising edge that is asynchronous to CLKOUTA and is active High. The falling edge of ARDY must be synchronized to CLKOUTA. To always assert the ready condition to the microcontroller, tie ARDY High. If the system does not use ARDY, tie the pin Low to yield control to SRDY.
BHE/ADEN (Am186TMER Microcontroller Only)
Bus High Enable (three-state, output, synchronous) Address Enable (input, internal pullup) BHE--During a memory access, this pin and the leastsignificant address bit (AD0 or A0) indicate to the system which bytes of the data bus (upper, lower, or both) participate in a bus cycle. The BHE/ADEN and AD0 pins are encoded as shown in Table 2. BHE is asserted during t 1 and remains asser ted through t3 and tW. BHE does not need to be latched. BHE is three-stated during bus hold and reset conditions. On the Am186ER microcontroller, WLB and WHB implement the functionality of BHE and AD0 for high and low byte write enables.
Note: Once the above modes are set, they can be changed only by resetting the processor.
Table 2. Data Byte Encoding
BHE 0 0 1 1 AD0 Type of Bus Cycle 0 1 0 1 Word Transfer
D
Refresh
R
A
CLKOUTA
Clock Output A (output, synchronous)
This pin supplies the internal clock to the system. Depending on the value of the Power-Save Control Register (PDCON), CLKOUTA operates at either the CPU fundamental frequency (which varies with the divide by two, times one, and times four clocking modes), the power-save frequency, or is three-stated (see Figure 10 on page 48). CLKOUTA remains active during reset and bus hold conditions.
T F
CLKOUTB
Clock Output B (output, synchronous) This pin supplies a clock to the system. Depending on the value of the Power-Save Control Register (PDCON), CLKOUTB operates at either the CPU fundamental frequency (which varies with the divide by two, times one, and times four clocking modes), the powersave frequency, or is three-stated (see Figure 10 on page 48). CLKOUTB remains active during reset and bus hold conditions.
High Byte Transfer (Bits 15-8) Low Byte Transfer (Bits 7-0)
DEN/PIO5
Data Enable (output, three-state, synchronous) This pin supplies an output enable to an external databus transceiver. DEN is asserted during memory, I/O, and interrupt acknowledge cycles. DEN is deasserted when DT/R changes state. DEN is three-stated during a bus hold or reset condition.
BHE/ADEN also signals DRAM refresh cycles when using the multiplexed address and data (AD) bus. A refresh cycle is indicated when both BHE/ADEN and AD0 are High. During refresh cycles, the A bus and the AD bus are not guaranteed to provide the same address during the address phase of the AD bus cycle. For this
Am186TMER and Am188TMER Microcontrollers Data Sheet
31
DRQ1-DRQ0 (DRQ1/PIO13, DRQ0/PIO12)
DMA Requests (input, synchronous, level-sensitive) These pins indicate to the microcontroller that an external device is ready for DMA channel 1 or channel 0 to perform a transfer. DRQ1-DRQ0 are level-triggered and internally synchronized. The DRQ signals are not latched and must remain active until serviced.
DT/R/PIO4
Data Transmit or Receive (output, three-state, synchronous) This pin indicates which direction data should flow through an external data-bus transceiver. When DT/R is asserted High, the microcontroller transmits data. When this pin is deasserted Low, the microcontroller receives data. DT/R is three-stated during a bus hold or reset condition.
The Am186ER and Am188ER microcontrollers' HOLD latency time, the time between HOLD request and HOLD acknowledge, is a function of the activity occurring in the processor when the HOLD request is received. A HOLD request is second only to DRAM or PSRAM refresh requests in priority of activity requests received by the processor. This implies that if a HOLD request is received just as a DMA transfer begins, the HOLD latency can be as great as four bus cycles. This occurs if a DMA word transfer operation is taking place (Am186ER microcontroller only) from an odd address to an odd address. This is a total of 16 clock cycles or more if wait states are required. In addition, if locked transfers are performed, the HOLD latency time is increased by the length of the locked transfer.
INT0
Maskable Interrupt Request 0 (input, asynchronous)
GND
Ground The ground pins connect the system ground to the microcontroller.
This pin indicates to the microcontroller that an interrupt request has occurred. If the INT0 pin is not masked, the microcontroller transfers program execution to the location specified by the INT0 vector in the microcontroller interrupt vector table. Interrupt requests are synchronized internally and can be edge-triggered or level-triggered. To guarantee interrupt recognition, the requesting device must continue asserting INT0 until the request is acknowledged.
HLDA
Bus Hold Acknowledge (output, synchronous) When an external bus master requests control of the local bus (by asserting HOLD), the microcontroller completes the bus cycle in progress and then relinquishes control of the bus to the external bus master by asserting HLDA and floating DEN, RD, WR, S2-S0, AD15-AD0, S6, A19-A0, BHE, WHB, WLB, and DT/R, and then driving the chip selects UCS, LCS, MCS3- MCS0, PCS6-PCS5, and PCS3-PCS0 High. When the external bus master has finished using the local bus, it indicates this to the microcontroller by deasserting HOLD. The microcontroller responds by deasserting HLDA. If the microcontroller requires access to the bus (that is, for refresh), it will deassert HLDA before the external bus master deasserts HOLD. The external bus master must be able to deassert HOLD and allow the microcontroller access to the bus. See the timing diagrams for bus hold on page 101. This pin is three-stated during ONCE mode.
D
R
A
INT1/SELECT
Maskable Interrupt Request 1 (input, asynchronous) Slave Select (input, asynchronous)
T F
INT1--This pin indicates to the microcontroller that an interrupt request has occurred. If INT1 is not masked, the microcontroller transfers program execution to the location specified by the INT1 vector in the microcontroller interrupt vector table. Interrupt requests are synchronized internally and can be edge-triggered or level-triggered. To guarantee interrupt recognition, the requesting device must continue asserting INT1 until the request is acknowledged.
HOLD
Bus Hold Request (input, synchronous, level-sensitive) This pin indicates to the microcontroller that an external bus master needs control of the local bus. For more information, see the HLDA pin description.
SELECT--When the microcontroller interrupt control unit is operating as a slave to an external master interrupt controller, this pin indicates to the microcontroller that an interrupt type appears on the address and data bus. The INT0 pin must indicate to the microcontroller that an interrupt has occurred before the SELECT pin indicates to the microcontroller that the interrupt type appears on the bus.
32
Am186TMER and Am188TMER Microcontrollers Data Sheet
INT2/INTA0/PIO31
Maskable Interrupt Request 2 (input, asynchronous) Interrupt Acknowledge 0 (output, synchronous) INT2--This pin indicates to the microcontroller that an interrupt request has occurred. If the INT2 pin is not masked, the microcontroller transfers program execution to the location specified by the INT2 vector in the microcontroller interrupt vector table. Interrupt requests are synchronized internally and can be edge-triggered or level-triggered. To guarantee interrupt recognition, the requesting device must continue asserting INT2 until the request is acknowledged. INT2 becomes INTA0 when INT0 is configured in cascade mode. INTA0--When the microcontroller interrupt control unit is operating in cascade mode, this pin indicates to the system that the microcontroller needs an interrupt type to process the interrupt request on INT0. The peripheral issuing the interrupt request must provide the microcontroller with the corresponding interrupt type.
INT4/PIO30
Maskable Interrupt Request 4 (input, asynchronous) This pin indicates to the microcontroller that an interrupt request has occurred. If the INT4 pin is not masked, the microcontroller then transfers program execution to the location specified by the INT4 vector in the microcontroller interrupt vector table. Interrupt requests are synchronized internally and can be edge-triggered or level-triggered. To guarantee interrupt recognition, the requesting device must continue asserting INT4 until the request is acknowledged.
LCS/ONCE0
Lower Memory Chip Select (output, synchronous, internal pullup) ONCE Mode Request 0 (input) LCS--This pin indicates to the system that a memory access is in progress to the lower memory block. The size of the lower memory block is programmable up to 512 Kbyte. LCS is held High during a bus hold condition. ONCE0--During reset, this pin and ONCE1 indicate to the microcontroller the mode in which it should operate. ONCE0 and ONCE1 are sampled on the rising edge of RES. If both pins are asserted Low, the microcontroller enters ONCE mode; otherwise, it operates normally. In ONCE mode, all pins assume a high-impedance state and remain in that state until a subsequent reset occurs. To guarantee that the microcontroller does not inadvertently enter ONCE mode, ONCE0 has a weak internal pullup resistor that is active only during reset.
INT3/INTA1/IRQ
Maskable Interrupt Request 3 (input, asynchronous) Interrupt Acknowledge 1 (output, synchronous) Slave Interrupt Request (output, synchronous) INT3--This pin indicates to the microcontroller that an interrupt request has occurred. If the INT3 pin is not masked, the microcontroller then transfers program execution to the location specified by the INT3 vector in the microcontroller interrupt vector table. Interrupt requests are synchronized internally, and can be edge-triggered or level-triggered. To guarantee interrupt recognition, the requesting device must continue asserting INT3 until the request is acknowledged. INT3 becomes INTA1 when INT1 is configured in cascade mode. INTA1--When the microcontroller interrupt control unit is operating in cascade mode, this pin indicates to the system that the microcontroller needs an interrupt type to process the interrupt request on INT1. The peripheral issuing the interrupt request must provide the microcontroller with the corresponding interrupt type. IRQ--When the microcontroller interrupt control unit is operating as a slave to an external master interrupt controller, this pin lets the microcontroller issue an interrupt request to the external master interrupt controller.
D
R
A
T F
MCS3/RFSH/PIO25
Midrange Memory Chip Select 3 (output, synchronous, internal pullup) Automatic Refresh (output, synchronous)
MCS3--This pin indicates to the system that a memory access is in progress to the four th region of the midrange memory block. The base address and size of the midrange memory block are programmable. MCS3 is held High during a bus hold condition. In addition, this pin has a weak internal pullup resistor that is active during reset. RFSH--This pin provides a signal timed for auto refresh to PSRAM devices. It is only enabled to function as a refresh pulse when the PSRAM mode bit is set in the LMCS Register. An active Low pulse is generated for 1.5 clock cycles with an adequate deassertion period to ensure that overall auto refresh cycle time is met.
Am186TMER and Am188TMER Microcontrollers Data Sheet
33
MCS2-MCS0 (MCS2/PIO24, MCS1/PIO15, MCS0/PIO14)
Midrange Memory Chip Selects (output, synchronous, internal pullup) These pins indicate to the system that a memory access is in progress to the corresponding region of the midrange memory block. The base address and size of the midrange memory block are programmable. MCS2-MCS0 are held High during a bus hold condition. In addition, they have weak internal pullup resistors that are active during reset. Unlike the UCS and LCS chip selects, the MCS outputs assert with the multiplexed AD address bus.
peripheral memory block (either I/O or memory address space). The base address of the peripheral memory block is programmable. PCS3-PCS0 are held High during a bus hold condition. They are also held High during reset. PCS4 is not available on the Am186ER and Am188ER microcontrollers. Unlike the UCS/LCS chip selects, the PCS outputs assert with the multiplexed AD address bus. Note also that each peripheral chip select asser ts over a 256-byte address range, which is twice the address range covered by peripheral chip selects in the 80C186/80C188 microcontrollers.
NMI
Nonmaskable Interrupt (input, synchronous, edgesensitive) This pin indicates to the microcontroller that an interrupt request has occurred. The NMI signal is the highest priority hardware interrupt and, unlike the INT4- INT0 pins, cannot be masked. The microcontroller always transfers program execution to the location specified by the nonmaskable interrupt vector in the microcontroller interrupt vector table when NMI is asserted. Although NMI is the highest priority interrupt source, it does not participate in the priority resolution process of the maskable interrupts. There is no bit associated with NMI in the interrupt in-service or interrupt request registers. This means that a new NMI request can interrupt an executing NMI interrupt service routine. As with all hardware interrupts, the IF (interrupt flag) is cleared when the processor takes the interrupt, disabling the maskable interrupt sources. However, if maskable interrupts are reenabled by software in the NMI interrupt service routine, via the STI instruction for example, an NMI currently in service will not have any effect on the priority resolution of maskable interrupt requests. For this reason, it is strongly advised that the interrupt service routine for NMI does not enable the maskable interrupts. An NMI transition from Low to High is latched and synchronized internally, and it initiates the interrupt at the next instruction boundary. To guarantee that the interrupt is recognized, the NMI pin must be asserted for at least one CLKOUTA period. Because NMI is rising edge sensitive, holding the pin High during reset has no effect on program execution.
PCS5/A1/PIO3
Peripheral Chip Select 5 (output, synchronous) Latched Address Bit 1 (output, synchronous) PCS5--This pin indicates to the system that a memory access is in progress to the sixth region of the peripheral memory block (either I/O or memory address space). The base address of the peripheral memory block is programmable. PCS5 is held High during a bus hold condition. It is also held High during reset. Unlike the UCS and LCS chip selects, the PCS outputs assert with the multiplexed AD address bus. Note also that each peripheral chip select asser ts over a 256-byte address range, which is twice the address range covered by peripheral chip selects in the 80C186 and 80C188 microcontrollers. A1--When the EX bit in the MCS and PCS auxiliary register is 0, this pin supplies an internally latched address bit 1 to the system. During a bus hold condition, A1 retains its previously latched value.
D
R
A
T F
PCS6/A2/PIO2
Peripheral Chip Select 6 (output, synchronous) Latched Address Bit 2 (output, synchronous)
PCS6--This pin indicates to the system that a memory access is in progress to the seventh region of the peripheral memory block (either I/O or memory address space). The base address of the peripheral memory block is programmable. PCS6 is held High during a bus hold condition or reset. Unlike the UCS and LCS chip selects, the PCS outputs assert with the multiplexed AD address bus. Note also that each peripheral chip select asser ts over a 256-byte address range, which is twice the address range covered by peripheral chip selects in earlier generations of the Am186/Am188 microcontrollers. A2--When the EX bit in the MCS and PCS auxiliary register is 0, this pin supplies an internally latched address bit 2 to the system. During a bus hold condition, A2 retains its previously latched value.
PCS3-PCS0 (PCS3/PIO19, PCS2/PIO18, PCS1/PIO17, PCS0/PIO16)
Peripheral Chip Selects (output, synchronous) These pins indicate to the system that a memory access is in progress to the corresponding region of the
34
Am186TMER and Am188TMER Microcontrollers Data Sheet
PIO31-PIO0 (Shared)
Programmable I/O Pins (input/output, asynchronous, open-drain) The Am186ER and Am188ER microcontrollers provide 32 individually programmable I/O pins. Each PIO can be programmed with the following attributes: PIO function (enabled/disabled), direction (input/output), and weak pullup or pulldown. On the Am186ER and Am188ER microcontrollers, the internal pullup resistor has a value of approximately 100 kohms. The internal pulldown resistor has a value of approximately 100 kohms. The pins that are multiplexed with PIO31-PIO0 are listed in Table 3 and Table 4 on page 36. After power-on reset, the PIO pins default to various configurations. The column titled Power-On Reset Status in Table 3 and Table 4 lists the defaults for the PIOs. The system initialization code must reconfigure any PIOs as required. If PIO29 (S6/CLKSEL1) is to be used in input mode, the input device must not drive PIO29 Low during poweron reset. The pin defaults to a PIO input with pullup, so it does not need to be driven High externally. The A19-A17 address pins default to normal operation on power-on reset, allowing the processor to correctly begin fetching instructions at the boot address FFFF0h. The DT/R, DEN, and SRDY pins also default to normal operation on power-on reset.
serted. This input is provided with a Schmitt trigger to facilitate power-on RES generation via an RC network.
RFSH2/ADEN (Am188TMER Microcontroller Only)
Refresh 2 (three-state, output, synchronous) Address Enable (input, internal pullup) RFSH2--Asserted Low to signify a DRAM refresh bus cycle. The use of RFSH2/ADEN to signal a refresh is not valid when PSRAM mode is selected. Instead, the MCS3/RFSH signal is provided to the PSRAM. During reset, this pin is a pullup. This pin is three-stated during bus holds and ONCE mode. ADEN--If RFSH2/ADEN is held High or left floating on power-on reset, the AD bus (AO15-AO8 and AD7-AD0) is enabled or disabled during the address portion of LCS and UCS bus cycles based on the DA bit in the LMCS and UMCS registers. If the DA bit is set, the memory address is accessed on the A19-A0 pins. This mode of operation reduces power consumption. For more information, see the Bus Operation section on page 41. There is a weak internal pullup resistor on RFSH2/ ADEN so no external pullup is required. If RFSH2/ADEN is held Low on power-on reset, the AD bus drives both addresses and data. Changing the DA bit of the LMCS and UMCS registers will have no effect. (S6 and UZI also assume their normal functionality in this instance. The PIO Mode and Direction registers cannot reconfigure these pins as PIOs. See Table 3 and Table 4 on page 36.) The pin is sampled within three crystal clock cycles after the rising edge of RES. RFSH2/ADEN is three-stated during bus holds and ONCE mode.
RD
Read Strobe (output, synchronous, three-state) This pin indicates to the system that the microcontroller is performing a memory or I/O read cycle. RD is guaranteed not to be asserted before the address and data bus is floated during the address-to-data transition. RD is three-stated during bus holds and ONCE mode.
RES
Reset (input, asynchronous, level-sensitive) This pin requires the microcontroller to perform a reset. When RES is asserted, the microcontroller immediately terminates its present activity, clears its internal logic, and CPU control is transferred to the reset address FFFF0h. RES must be held Low for at least 1 ms. RES can be asserted asynchronously to CLKOUTA because RES is synchronized internally. For proper initialization, V CC must be within specifications, and CLKOUTA must be stable for more than four CLKOUTA periods during which RES is asserted. The microcontroller begins fetching instructions approximately 6.5 CLKOUTA periods after RES is deas-
D
R
A
S2
T F
Note: Once the above modes are set, they can be changed only by resetting the processor.
RXD/PIO28
Receive Data (input, asynchronous) This pin supplies asynchronous serial receive data from the system to the internal UART of the microcontroller.
Bus Cycle Status (output, three-state, synchronous) S2--This pin indicates to the system the type of bus cycle in progress. S2 can be used as a logical memory or I/O indicator. S2-S0 are three-stated during bus holds, hold acknowledges, and ONCE mode. During reset, these pins are pullups. The S2-S0 pins are encoded as shown in Table 5 on page 37.
Am186TMER and Am188TMER Microcontrollers Data Sheet
35
Table 3. Numeric PIO Pin Assignments
PIO No. 0 1 2 3 4 5 6 7(1) 8 9
(1) (1)
Table 4.
A17(1) A18(1) A19(1) DEN
Alphabetic PIO Pin Assignments
PIO No. Power-On Reset Status 7 8 9 5 12 13 4 31 30 14 15 24 25 16 17 18 19 3 2 Normal operation(3) Normal operation(3) Normal operation(3) Normal operation(3) Input with pullup Input with pullup Normal operation(3) Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup
Associated Pin TMRIN1 TMROUT1 PCS6/A2 PCS5/A1 DT/R DEN SRDY A17 A18 A19 TMROUT0 TMRIN0 DRQ0 DRQ1 MCS0 MCS1 PCS0 PCS1 PCS2 PCS3 SCLK SDATA SDEN0 SDEN1 MCS2 MCS3/RFSH UZI/CLKSEL2 TXD RXD
Power-On Reset Status Input with pullup Input with pulldown Input with pullup Input with pullup Normal operation Normal operation Normal operation
(3) (3) (4)
Associated Pin
DRQ0 DRQ1 DT/R INT2 INT4 MCS0 MCS1 MCS2 MCS3/RFSH PCS0 PCS1 PCS2 PCS3 PCS5/A1 PCS6/A2
Normal operation(3) Normal operation(3) Normal operation Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pulldown Input with pulldown Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup Input with pullup
(3)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26(1,2) 27 28 29(1,2) 30 31
Input with pulldown
S6/CLKSEL1 INT4 INT2
Notes:
1. These pins are used by emulators. (Emulators also use S2-S0, RES, NMI, CLKOUTA, BHE, ALE, AD15-AD0, and A16-A0.) 2. These pins revert to normal operation if BHE/ADEN (Am186ER microcontroller) or RFSH2/ADEN (Am188ER microcontroller) is held Low during power-on reset. 3. When used as a PIO, input with pullup option available. 4. When used as a PIO, input with pulldown option available.
D
R
A
RXD SCLK SDATA SDEN0 SDEN1 SRDY TMRIN0 TMRIN1 TMROUT0 TMROUT1 TXD
S6/CLKSEL1(1,2)
T F
28 29 20 21 22 23 6 11 0 10 1 27 26 Input with pulldown Input with pulldown Normal operation(4) Input with pullup Input with pullup Input with pulldown Input with pulldown Input with pullup Input with pullup
UZI/CLKSEL2(1,2)
Notes: 1. These pins are used by emulators. (Emulators also use S2-S0, RES, NMI, CLKOUTA, BHE, ALE, AD15-AD0, and A16-A0.) 2. These pins revert to normal operation if BHE/ADEN (Am186ER microcontroller) or RFSH2/ADEN (Am188ER microcontroller) is held Low during power-on reset. 3. When used as a PIO, input with pullup option available. 4. When used as a PIO, input with pulldown option available.
36
Am186TMER and Am188TMER Microcontrollers Data Sheet
S1/IMDIS
Bus Cycle Status (output, three-state, synchronous) Internal Memory Disable (input, internal pullup) S1--This pin indicates to the system the type of bus cycle in progress. S1 can be used as a data transmit or receive indicator. S2-S0 are three-stated during bus holds, hold acknowledges, and ONCE mode. During reset, these pins are pullups. The S2-S0 pins are encoded as shown in Table 5. IMDIS--If asserted during reset, this pin disables internal memory. Internal memory disable mode is provided for emulation and debugging purposes.
S0/SREN
Bus Cycle Status (output, three-state, synchronous) Show Read Enable (input, internal pullup) S0--This pin indicates to the system the type of bus cycle in progress. S2-S0 are three-stated during bus holds, hold acknowledges, and ONCE mode. During reset, these pins are pullups. The S2-S0 pins are encoded as shown in Table 5. SREN--If asserted during reset, this pin enables data read from internal memory to be shown/driven on the AD15-AD0 bus. Note that if a byte read is being shown, the unused byte will also be driven on the AD15-AD0 bus.This mode is provided for emulation and debugging purposes.
CLKSEL1--The clocking mode of the Am186ER and Am188ER microcontrollers is controlled by UZI/ CLKSEL2/PIO26 and S6/CLKSEL1/PIO29. Both CLKSEL2 and CLKSEL1 are held High during poweron reset because of an internal pullup resistor. This is the default clocking mode--Times Four. If CLKSEL1 is held Low during power-on reset, the chip enters the Divide by Two clocking mode where the fundamental clock is derived by dividing the external clock input by 2. If Divide by Two mode is selected, the PLL is disabled. This pin is latched within three crystal clock cycles after the rising edge of RES. Refer to Reset Waveforms on page 100 and Signals Related to Reset Waveforms on page 100 to determine signal hold times. See Table 6 on page 39 for more information on the clocking modes. If S6 is used as PIO29 in input mode, the device driving PIO29 must not drive the pin Low during power-on reset. S6/CLKSEL1/PIO29 defaults to a PIO input with pullup, so the pin does not need to be driven High externally.
SCLK/PIO20
Serial Clock (output, synchronous)
Table 5. Bus Cycle Encoding
S2 0 0 0 0 1 1 1 1 S1 0 0 1 1 0 0 1 1 S0 0 1 0 1 0 1 0 1 Bus Cycle
D
Halt
Interrupt acknowledge Read data from I/O Write data to I/O Instruction fetch
R
A
This pin supplies the synchronous serial interface (SSI) clock to a slave device, allowing transmit and receive operations to be synchronized between the microcontroller and the slave. SCLK is derived from the microcontroller internal clock and then divided by 2, 4, 8, or 16 depending on register settings. An access to any of the SSR or SSD registers activates SCLK for eight SCLK cycles (see Figure 14 and Figure 15 on page 58). When SCLK is inactive, it is held High by the microcontroller. SCLK is three-stated during ONCE mode.
T F
SDATA/PIO21
Serial Data (input/output, synchronous) This pin transmits and receives synchronous serial interface (SSI) data to and from a slave device. When SDATA is inactive, a weak keeper holds the last value of SDATA on the pin.
Read data from memory Write data to memory None (passive)
SDEN1/PIO23, SDEN0/PIO22
Serial Data Enables (output, synchronous) These pins enable data transfers on port 1 and port 0 of the synchronous serial interface (SSI). The microcontroller asserts either SDEN1 or SDEN0 at the beginning of a transfer and deasserts it after the transfer is complete. When SDEN1-SDEN0 are inactive, they are held Low by the microcontroller. SDEN1-SDEN0 are three-stated during ONCE mode.
S6/CLKSEL1/PIO29
Bus Cycle Status Bit 6 (output, synchronous) Clock Select 1 (input, internal pullup) S6--During the second and remaining periods of a cycle (t2, t3, and t4), this pin is asserted High to indicate a DMA-initiated bus cycle. During a bus hold or reset condition, S6 is three-stated.
Am186TMER and Am188TMER Microcontrollers Data Sheet
37
SRDY/PIO6
Synchronous Ready (input, synchronous, level-sensitive) This pin indicates to the microcontroller that the addressed memory space or I/O device will complete a data transfer. The SRDY pin accepts an active High input synchronized to CLKOUTA. Using SRDY instead of ARDY allows a relaxed system timing because of the elimination of the one-half clock period required to internally synchronize ARDY. To always assert the ready condition to the microcontroller, tie SRDY High. If the system does not use SRDY, tie the pin Low to yield control to ARDY. When SRDY is configured as P106, the internal SRDY signal is driven low.
UCS/ONCE1
Upper Memory Chip Select (output, synchronous) ONCE Mode Request 1 (input, internal pullup) UCS--This pin indicates to the system that a memory access is in progress to the upper memory block. The base address and size of the upper memory block are programmable up to 512 Kbyte. UCS is held High during a bus hold condition. After power-on reset, UCS is asserted because the microcontroller begins executing at FFFF0h and the default configuration for the UCS chip select is 64 Kbyte from F0000h to FFFFFh. ONCE1--During reset, this pin and ONCE0 indicate to the microcontroller the mode in which it should operate. ONCE0 and ONCE1 are sampled on the rising edge of RES. If both pins are asserted Low, the microcontroller enters ONCE mode. Otherwise, it operates normally. In ONCE mode, all pins assume a high-impedance state and remain in that state until a subsequent reset occurs. To guarantee the microcontroller does not inadvertently enter ONCE mode, ONCE1 has a weak internal pullup resistor that is active only during a reset.
TMRIN0/PIO11
Timer Input 0 (input, synchronous, edge-sensitive) This pin supplies a clock or control signal to the internal microcontroller timer 0. After internally synchronizing a Low-to-High transition on TMRIN0, the microcontroller increments the timer. TMRIN0 must be tied High if not being used.
TMRIN1/PIO0
Timer Input 1 (input, synchronous, edge-sensitive) This pin supplies a clock or control signal to the internal microcontroller timer 1. After internally synchronizing a Low-to-High transition on TMRIN1, the microcontroller increments the timer. TMRIN1 must be tied High if not being used.
UZI/CLKSEL2/PIO26
Upper Zero Indicate (output, synchronous)
TMROUT0/PIO10
Timer Output 0 (output, synchronous)
This pin supplies the system with either a single pulse or a continuous waveform with a programmable duty cycle.
TMROUT1/PIO1
Timer Output 1 (output, synchronous)
This pin supplies the system with either a single pulse or a continuous waveform with a programmable duty cycle.
TXD/PIO27
D
R
A
UZI--This pin lets the designer determine if an access to the interrupt vector table is in progress by ORing it with bits 15-10 of the address and data bus (AD15-AD10 on the Am186ER microcontroller and AO15-AO10 on the Am188ER microcontroller). UZI is the logical AND of the inverted A19-A16 bits. UZI is not held throughout the cycle. UZI is asserted in the first period and deasserted in the second period of a bus cycle. UZI/CLKSEL2 is three-stated during bus holds and ONCE mode.
T F
CLKSEL2--The clocking mode of the Am186ER and Am188ER microcontrollers is controlled by UZI/ CLKSEL2/PIO26 and S6/CLKSEL1/PIO29 during reset. Both CLKSEL2 and CLKSEL1 are held High during power-on reset because of an internal pullup resistor. This is the default clocking mode--Times Four, which is used if neither clock select is asserted Low during reset. If CLKSEL2 is held Low during power-on reset, the microcontroller enters Times One mode. This pin is latched within three crystal clock cycles after the rising edge of RES. Refer to Reset Waveforms on page 100 and Signals Related to Reset Waveforms on page 100 to determine signal hold times. Note that clock selection must be stable four clock cycles prior to exiting reset (that is, RES going High). See Table 6 on page 39 for specifics on the clocking modes and how to specify them. UZI/CLKSEL2 is three-stated during bus holds and ONCE mode.
Transmit Data (output, asynchronous) This pin supplies asynchronous serial transmit data to the system from the internal UART of the microcontroller.
38
Am186TMER and Am188TMER Microcontrollers Data Sheet
WR
Table 6. Clocking Modes CLKSEL2 H H L L CLKSEL1 H L H L
Clocking Mode Times Four Divide by Two Times One Reserved1
Write Strobe (output, synchronous) This pin indicates to the system that the data on the bus is to be written to a memory or I/O device. WR is threestated during a bus hold or reset condition.
X1
Crystal Input (input) This pin and the X2 pin provide connections for a fundamental mode crystal used by the internal oscillator circuit. If providing an external clock source, connect the source to X1 and leave X2 unconnected. Unlike the rest of the pins on the Am186ER and Am188ER microcontrollers, X1 is not 5-V tolerant and has a maximum input equal to VCC.
Notes: 1. The reserved clocking mode should not be used. Entering the reserved clocking mode may cause unpredictable system behavior.
VCC
Power Supply (input) These pins supply power (+3.3 V) to the microcontroller.
X2
Crystal Output (output) This pin and the X1 pin provide connections for a fundamental mode crystal used by the internal oscillator circuit. If providing an external clock source, connect the source to X1 and leave X2 unconnected. Unlike the rest of the pins on the Am186ER and Am188ER microcontrollers, X2 is not 5-V tolerant.
WHB (Am186TMER Microcontroller Only)
Write High Byte (output, three-state, synchronous) This pin and WLB indicate to the system which bytes of the data bus (upper, lower, or both) participate in a write cycle. In 80C186 designs, this information is provided by BHE, AD0, and WR. However, by using WHB and WLB, the standard system interface logic and external address latch that were required are eliminated. WHB is asserted with AD15-AD8. WHB is the logical OR of BHE and WR. During reset, this pin is a pullup. This pin is three-stated during bus holds and ONCE mode.
WLB (Am186TMER Microcontroller Only) WB (Am188TMER Microcontroller Only)
Write Low Byte (output, three-state, synchronous) Write Byte (output, three-state, synchronous) WLB--This pin and WHB indicate to the system which bytes of the data bus (upper, lower, or both) participate in a write cycle. In 80C186 designs, this information is provided by BHE, AD0, and WR. However, by using WHB and WLB, the standard system interface logic and external address latch that were required are eliminated. WLB is asserted with AD7-AD0. WLB is the logical OR of A0 and WR. This pin is three-stated during bus holds and ONCE mode. WB--On the Am188ER microcontroller, this pin indicates a write to the bus. WB uses the same early timing as the nonmultiplexed address bus. WB is associated with AD7-AD0. This pin is three-stated during bus holds and ONCE mode.
D
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
39
FUNCTIONAL DESCRIPTION
The Am186ER and Am188ER microcontrollers are based on the architecture of the original Am186 and Am188 microcontrollers and they function in the enhanced mode of the Am186 and Am188 microcontrollers. Enhanced mode includes system features such as power-save control. Each of the 8086, 8088, 80186, and 80188 microcontrollers contains the same basic set of registers, instructions, and addressing modes. The Am186ER and Am188ER microcontrollers are backward compatible with the 80C186/80C188 and Am186/Am188 microcontrollers. A full description of the Am186ER and Am188ER microcontrollers' registers and instructions is included in the Am186ER and Am188ER Microcontrollers User's Manual, order #21684.
1 19 0 0 15 2 0 2 2 A Shift Left 4 Bits
1 15 0 15
2
A
0
2
4 Segment Logical 0 Base Address 2 Offset 0
4
0 0 2 0
1 19
A
6
2 0
Physical Address
To Memory
Memory Organization
Memory is organized in sets of segments. Each segment is a linear contiguous sequence of 64K (216) 8-bit bytes. Memory is addressed using a two-component address consisting of a 16-bit segment value and a 16bit offset. The 16-bit segment values are contained in one of four internal segment registers (CS, DS, SS, or ES). The physical address is calculated by shifting the segment value left by 4 bits and adding the 16-bit offset value to yield a 20-bit physical address (see Figure 3). This allows for a 1-Mbyte physical address size. All instructions that address operands in memory must specify the segment value and the 16-bit offset value. For speed and compact instruction encoding, the segment register used for physical address generation is implied by the addressing mode used (see Table 7).
Figure 3.
Two-Component Address Example
I/O Space
Memory Reference Needed Instructions Local Data Stack
External Data (Global)
D
Table 7.
Segment Register Used Implicit Segment Selection Rule Code (CS) Data (DS) Stack (SS) Extra (ES) Instructions (including immediate data) All data references All stack pushes and pops; any memory references that use BP Register All string instruction references that use the DI Register as an index
R
A
The I/O space consists of 64K 8-bit or 32K 16-bit ports. Separate instructions (IN, INS and OUT, OUTS) address the I/O space with either an 8-bit port address specified in the instruction, or a 16-bit port address in the DX register. Eight-bit port addresses are zeroextended such that A15-A8 are Low.
T F
Segment Register Selection Rules
40
Am186TMER and Am188TMER Microcontrollers Data Sheet
BUS OPERATION
The industry-standard 80C186/80C188 microcontrollers use a multiplexed address and data (AD) bus. The address is present on the AD bus only during the t1 clock phase. The Am186ER and Am188ER microcontrollers continue to provide the multiplexed AD bus and, in addition, provide a nonmultiplexed address (A) bus. The A bus provides an address to the system for the complete bus cycle (t1-t4). For systems where power consumption is a concern, the address can be disabled from being driven on the AD bus on the Am186ER microcontroller and on the AD and AO buses on the Am188ER microcontroller during the normal address portion of the bus cycle for accesses to UCS and/or LCS address spaces. In this mode, the affected bus is placed in a high-impedance state during the address portion of the bus cycle. This feature is enabled through the DA bits in the UMCS and LMCS registers. When address disable is in effect, the number of signals that assert on the bus during all normal bus cycles to the associated address space is reduced, thus decreasing power consumption, reducing processor switching noise, and preventing bus contention with memory devices and peripherals when operating at high clock rates. On the Am188ER microcontroller, the address is driven on A015-A08 during the data portion of the bus cycle, regardless of the setting of the DA bits. If the ADEN pin is pulled Low during processor reset, the value of the DA bits in the UMCS and LMCS registers is ignored and the address is driven on the AD bus for all accesses, thus preserving the industry-standard 80C186 and 80C188 microcontrollers' multiplexed address bus and providing support for existing emulation tools. Figure 4 on page 42 shows the affected signals during a normal read or write operation for an Am186ER microcontroller. The address and data will be multiplexed onto the AD bus. Figure 5 on page 42 shows an Am186ER microcontroller bus cycle when address bus disable is in effect. This results in having the AD bus operate in a nonmultiplexed data-only mode. The A bus will have the address during a read or write operation. Figure 6 on page 43 shows the affected signals during a normal read or write operation for an Am188ER microcontroller. The multiplexed address/data mode is compatible with the 80C188 microcontrollers and might be used to take advantage of existing logic or peripherals. Figure 7 on page 43 shows an Am188ER microcontroller bus cycle when address bus disable is in effect. The address and data is not multiplexed. The AD7-AD0 signals will have only data on the bus, while the A bus will have the address during a read or write operation. The AO bus will also have the address during t2-t4.
BUS INTERFACE UNIT
The bus interface unit controls all accesses to external peripherals and memory devices. External accesses include those to memory devices, as well as those to memory-mapped and I/O-mapped peripherals and the peripheral control block. The Am186ER and Am188ER microcontrollers provide an enhanced bus interface unit with the following features: n A nonmultiplexed address bus n Separate byte write enables for high and low bytes on the Am186ER microcontroller and a write enable on the Am188ER microcontroller n Pseudo Static RAM (PSRAM) support The standard 80C186/80C188 multiplexed address and data bus requires system interface logic and an external address latch. On the Am186ER and Am188ER microcontrollers, new byte write enables, PSRAM control logic, and a new nonmultiplexed address bus can reduce design costs by eliminating this external logic.
Nonmultiplexed Address Bus
D
R
A
The nonmultiplexed address bus (A19-A0) is valid onehalf CLKOUTA cycle in advance of the address on the AD bus. When used in conjunction with the modified UCS and LCS outputs and the byte write enable signals, the A19-A0 bus provides a seamless interface to external SRAM, PSRAM, and Flash/EPROM memory systems.
Byte Write Enables
T F
The Am186ER microcontroller provides the WHB (Write High Byte) and WLB (Write Low Byte) signals which act as byte write enables. The Am188ER microcontroller provides the WB (Write Byte) signal which acts as a write enable.
WHB is the logical AND of BHE and WR. WHB is Low when both BHE and WR are Low. WLB is the logical AND of A0 and WR. WLB is Low when A0 and WR are both Low. WB is Low whenever a byte is written by the Am188ER microcontroller. The byte write enables are driven in conjunction with the nonmultiplexed address bus as required for the write timing requirements of common SRAMs.
Output Enable
The Am186ER and Am188ER microcontrollers provide the RD (Read) signal which acts as an output enable. The RD signal is Low when a word or byte is read by the Am186ER or Am188ER microcontroller.
Am186TMER and Am188TMER Microcontrollers Data Sheet
41
t1 Address Phase
t2
t3 Data Phase
t4
CLKOUTA A19-A0 Address
AD15-AD0 (Read)
Address
Data
AD15-AD0 (Write) LCS or UCS
Address
Data
MCSx, PCSx
Figure 4. Am186TMER Microcontroller Address Bus--Normal Operation
CLKOUTA A19-A0
D
AD7-AD0 (Read) AD15-AD8 (Read) AD15-AD0 (Write) LCS or UCS
R
t1 Address Phase
A
t2
t3 Data Phase
T F
t4 Data Data
Address
Data
Figure 5. Am186TMER Microcontroller--Address Bus Disable in Effect
42
Am186TMER and Am188TMER Microcontrollers Data Sheet
t1 Address Phase CLKOUTA A19-A0
t2
t3 Data Phase
t4
Address
AD7-AD0 (Read)
Address
Data
AO15-AO8 (Read or Write) AD7-AD0 (Write) LCS or UCS
Address
Address
MCSx, PCSx
Figure 6. Am188TMER Microcontroller Address Bus--Normal Operation
D
CLKOUTA A19-A0 AD7-AD0 (Read) AO15-AO8 AD7-AD0 (Write) LCS or UCS
R
t1
Address Phase
A
t2
T F
Data t4 Data
t3 Data Phase
Address
Address
Data
Figure 7. Am188TMER Microcontroller--Address Bus Disable in Effect
Am186TMER and Am188TMER Microcontrollers Data Sheet
43
Pseudo Static RAM (PSRAM) Support
The Am186ER and Am188ER microcontrollers support the use of PSRAM devices in low memory chip-select (LCS) space only. When PSRAM mode is enabled, the timing for the LCS signal is modified by the chip-select control unit to provide a CS precharge period during PS RA M ac c es s es. T he 50 - MHz ti m in g of th e Am186ER and Am188ER microcontrollers is appropriate to allow 70-ns PSRAM to run with one wait state. PSRAM mode is enabled through a bit in the Low Memory Chip-Select (LMCS) Register. The PSRAM feature is disabled on CPU reset. In addition to the LCS timing changes for PSRAM precharge, the PSRAM devices also require periodic refresh of all internal row addresses to retain their data. Although refresh of PSRAM can be accomplished several ways, the Am186ER and Am188ER microcontrollers implement auto refresh only. The Am186ER and Am188ER microcontrollers generate RFSH, a refresh signal, to the PSRAM devices when PSRAM mode is enabled. No refresh address is required by the PSRAM when using the auto refresh mechanism. The RFSH signal is multiplexed with the MCS3 signal pin. When PSRAM mode is enabled, MCS3 is not available for use as a chip-select signal. The refresh control unit must be programmed before accessing PSRAM in LCS space. The refresh counter in the Clock Prescaler (CDRAM) Register must be configured with the required refresh interval value. The refresh counter reload value in the CDRAM Register should not be set to less than 18 (12h) in order to provide time for processor cycles between refreshes. The refresh address counter must be set to 000000h to prevent the MCS3-MCS0 or PCS6-PCS0 chip selects from asserting. UCS may randomly assert during a PSRAM refresh. LCS is held High and the A bus is not used during refresh cycles. The LMCS Register must be configured to external ready ignored (R2 = 1) with one wait state (R1-R0 = 01b), and the PSRAM mode enable bit (SE) must be set. The ending address of LCS space in the LMCS Register must also be programmed.
Reading and Writing the PCB
Code intended to execute on the Am188ER microcontroller should perform all writes to the PCB registers as byte writes. These writes will transfer 16 bits of data to the PCB Register even if an 8-bit register is named in the instruction. For example, out dx, al results in the ax value being written to the port address in dx. Reads to the PCB should be done as word reads. Code written in this manner will run correctly on the Am188ER and Am186ER microcontrollers. Unaligned reads and writes to the PCB result in unpredictable behavior on both the Am186ER and Am188ER microcontrollers. For a complete description of all the registers in the PCB, refer to the Am186ER and Am188ER Microcontrollers User's Manual, order #21684.
CLOCK AND POWER MANAGEMENT
The clock and power management unit of the Am186ER and Am188ER microcontrollers includes a phase-locked loop (PLL) and a second programmable system clock output (CLKOUTB).
Phase-Locked Loop (PLL)
PERIPHERAL CONTROL BLOCK (PCB)
The integrated peripherals of the Am186ER and Am188ER microcontrollers are controlled by 16-bit read/write registers. The peripheral registers are contained within an internal 256-byte control block. The registers are physically located in the peripheral devices they control, but they are addressed as a single 256-byte block. Figure 9 on page 46 shows a map of these registers.
D
R
A
Mode Divide by 2 Times 1 Times 4
In a traditional 80C186/80C188 design, the internal clock frequency is half the frequency of the crystal. Because of the internal PLL on the Am186ER and Am188ER microcontrollers, the internal clock generated by both microcontrollers can operate at up to four times the frequency of the crystal. The Am186ER and Am188ER microcontrollers operate in the following modes:
T F
X1/X2 Min 30 MHz 16 MHz CLKOUTA Max 20 MHz 40 MHz 50 MHz
n Divide by Two--Frequency of the system clock is half the frequency of the crystal with PLL disabled. n Times One--Frequency of the system clock will be the same as the external crystal with PLL enabled. n Times Four--Frequency of the system clock is four times the frequency of the crystal with PLL enabled. The default Times Four mode must be used for processor frequencies above 40 MHz. The Divide by Two mode should be used for frequencies below 16 MHz. The clocking mode is selected using CLKSEL1 and CLKSEL2 on reset. Table 8 provides the maximum and minimum frequencies for X1, X2, and CLKOUTA according to clocking mode.
Table 8. Maximum and Minimum Clock Frequencies
X1/X2 Max 40 MHz 40 MHz CLKOUTA Min 15 MHz 16 MHz 16 MHz
12.5 MHz 4 MHz
44
Am186TMER and Am188TMER Microcontrollers Data Sheet
Crystal-Driven Clock Source
The internal oscillator circuit of the Am186ER and Am188ER microcontrollers is designed to function with a parallel-resonant fundamental mode crystal. Because of the PLL, the crystal frequency can be twice, equal to, or one quarter of the processor frequency. Do not replace a crystal with an LC or RC equivalent. See Figure 8 for a diagram of oscillator configurations. The X1 and X2 signals are connected to an internal inverting amplifier (oscillator) that provides, along with the external feedback loading, the necessary phase shift. In such a positive feedback circuit, the inverting amplifier has an output signal (X2) 180 degrees out of phase of the input signal (X1). The external feedback network provides an additional 180-degree phase shift. In an ideal system, the input to X1 will have 360 or zero degrees of phase shift. The external feedback network is designed to be as close to ideal as possible. If the feedback network is not providing necessary phase shift, negative feedback will dampen the output of the amplifier and negatively affect the operation of the clock generator. Values for the loading on X1 and X2 must be chosen to provide the necessary phase shift and crystal operation. Selecting a Crystal When selecting a crystal, the load capacitance should always be specified (CL). This value can cause variance in the oscillation frequency from the desired specified value (resonance). The load capacitance and the loading of the feedback network have the following relationship: CL = (C1 C2) + CS (C1 + C2)
where CS is the stray capacitance of the circuit. Placing the crystal and CL in series across the inverting amplifier and tuning these values (C1, C2) allows the crystal to oscillate at resonance. Finally, there is a relationship between C1 and C2. To enhance the oscillation of the inverting amplifier, these values need to be offset with the larger load on the output (X2). Equal values of these loads will tend to balance the poles of the inverting amplifier. The characteristics of the inverting amplifier set limits on the following parameters for crystals: ESR (Equivalent Series Resistance)60-ohm max Drive Level .......................... 500-mW max The recommended range of values for C1 and C2 are as follows: C1 ........................................ 15 pF 20% C2 ........................................ 22 pF 20%
The specific values for C1 and C2 must be determined by the designer and are dependent on the characteristics of the chosen crystal and board design.
External Source Clock
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X1
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Oscillator To PLL Am188ER/ Am186ER Microcontroller
A
C1 C2
Alternately, the internal oscillator can be driven by an external clock source. The external clock source should be connected to the input of the inverting amplifier (X1) with the output (X2) left unconnected. X1 and X2 are not 5-V tolerant and X1 has a maximum input equal to VCC.
T F
X1 Crystal X2 Oscillator To PLL Am188ER/ Am186ER Microcontroller
X2
a. External Clock Configuration
b. Crystal Configuration
Notes: X1 and X2 are not 5-V tolerant. The X1 maximum input is VCC.
Figure 8. Am186TMER and Am188TMER Microcontrollers Oscillator Configurations
Am186TMER and Am188TMER Microcontrollers Data Sheet
45
Offset (Hexadecimal) FE F6 w
Register Name Peripheral Control Block Relocation Register w Reset Configuration Register Processor Release Level Register PDCON Register w w Watchdog Timer Control Register Enable RCU Register Clock Prescaler Register Memory Partition Register w w DMA 1 Control Register DMA 1 Transfer Count Register DMA 1 Destination Address High Register DMA 1 Destination Address Low Register DMA 1 Source Address High Register DMA 1 Source Address Low Register DMA 0 Control Register
* F4
F0
** E6
E4 E2 E0 DA D8 D6 D4 D2 D0 CA C8 C6 C4 C2 C0
DMA 0 Transfer Count Register
DMA 0 Destination Address High Register DMA 0 Destination Address Low Register DMA 0 Source Address High Register DMA 0 Source Address Low Register
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** AC
A8 A6 A4 A2 A0 w w 88 86 84 82 80
Midrange Memory Chip Select Register Peripheral Chip Select Register Low Memory Chip Select Register Upper Memory Chip Select Register w Serial Port Baud Rate Divisor Register Serial Port Receive Register Serial Port Transmit Register Serial Port Status Register Serial Port Control Register
R
A
w
T F
Note: Gaps in offset addresses indicate reserved registers. No access should be made to reserved registers. Changed from original Am186 microcontroller
Internal Memory Chip Select Register PCS and MCS Auxiliary Register
* **
Changed from Am186EM and Am188EM microcontrollers
New to the Am186ER and Am188ER microcontrollers
Figure 9. Peripheral Control Block Register Map
46
Am186TMER and Am188TMER Microcontrollers Data Sheet
Offset (Hexadecimal) 7A 78 76 74 72 70
w
Register Name PIO Data 1 Register PIO Direction 1 Register PIO Mode 1 Register PIO Data 0 Register PIO Direction 0 Register PIO Mode 0 Register
w
w 66 62 60 5E 5C 5A 58 56 54 52 50 w 44 42 40 3E 3C 3A 38 36 34 32 30 Timer 2 Mode/Control Register Timer 2 Maxcount Compare A Register Timer 2 Count Register Timer 1 Mode/Control Register Timer 1 Maxcount Compare B Register Timer 1 Maxcount Compare A Register Timer 1 Count Register Timer 0 Mode/Control Register Timer 0 Maxcount Compare B Register Timer 0 Maxcount Compare A Register Timer 0 Count Register Serial Port Interrupt Control Register
w
w
Watchdog Timer Interrupt Control Register INT4 Control Register INT3 Control Register INT2 Control Register INT1 Control Register
D
2E 2C 2A 28 26 24 22 20 18 16 14 12 10
R
INT0 Control Register DMA 1 Interrupt Control Register
DMA 0 Interrupt Control Register Timer Interrupt Control Register Interrupt Status Register Interrupt Request Register In-service Register Priority Mask Register Interrupt Mask Register Poll Status Register Poll Register End-of-Interrupt Register
A
T F
Notes: Gaps in offset addresses indicate reserved registers. No access should be made to reserved registers. Changed from original Am186 microcontroller
Interrupt Vector Register Synchronous Serial Receive Register Synchronous Serial Transmit 0 Register Synchronous Serial Transmit 1 Register Synchronous Serial Enable Register Synchronous Serial Status Register
Figure 9. Peripheral Control Block Register Map (Continued)
Am186TMER and Am188TMER Microcontrollers Data Sheet
47
PSEN1 Power-Save Divisor1 (/1 to /128) Mux CPU Clock CAF1 Mux
Mux
CLKSEL2
CAD1 CLKOUTA
PLL
1x or 4x
X1, X2 Input Clock
Fundamental Clock CBF1 Mux Time Delay 6 2.5ns CBD1 CLKOUTB
/2
CLKSEL1
Notes: 1. Set via PDCON Register
Figure 10. Clock Organization
System Clocks
The base system clock of the original Am186/Am188 microcontrollers is renamed CLKOUTA and the additional output is called CLKOUTB. CLKOUTA and CLKOUTB operate at either the fundamental processor frequency or the CPU clock (power-save) frequency. Figure 10 shows the organization of the clocks. The second clock output (CLKOUTB) allows one clock to run at the fundamental frequency and the other clock to run at the CPU (power-save) frequency. Individual drive enable bits allow selective enabling of just one, or both, of these clock outputs.
Power-Save Operation
T h e Pow e r - S ave m o d e o f t h e A m 1 8 6 E R a n d Am188ER microcontrollers reduces power consumption and heat dissipation, thereby extending battery life in portable systems. In Power-Save mode, operation of the CPU and internal peripherals continues at a slower clock frequency. When a hardware interrupt occurs, the microcontroller automatically returns to its normal operating frequency. The microcontroller remains in Power-Save mode for software interrupts and traps.
D
R
A
as RES is active. After RES becomes inactive and an internal processing interval elapses, the microcontroller begins execution with the instruction at physical location FFFF0h. RES also sets some registers to predefined values. Note that all clock selection (S6/ CLKSEL1 and UZI/CLKSEL2) must be stable four clocks prior to the deassertion of RES. Activating the PLL will require 1 ms to achieve a stable clock.
Reset Configuration Register
T F
When the RES input is asserted Low, the contents of the address/data bus (AD15-AD0) are written into the Reset Configuration Register. The system can place configuration information on the address/data bus using weak external pullup or pulldown resistors, or using an external driver that is enabled during reset. The processor does not drive the address/data bus during reset. For example, the Reset Configuration Register could be used to provide the software with the position of a configuration switch in the system. Using weak external pullup and pulldown resistors on the address and data bus, the system would provide the microcontroller with a value corresponding to the position of the jumper during a reset. The Reset Configuration Register can only be modified during reset. This register is read-only during normal operation.
Note: Power-save operation requires that clockdependent peripherals be reprogrammed for clock frequency changes. Software drivers must be aware of clock frequency.
Initialization and Processor Reset
Processor initialization or startup is accomplished by driving the RES input pin Low. RES must be held Low for 1 ms during power-up to ensure proper device initialization. RES forces the Am186ER and Am188ER microcontrollers to terminate all execution and local bus activity. No instruction or bus activity occurs as long
48
Am186TMER and Am188TMER Microcontrollers Data Sheet
CHIP-SELECT UNIT
The Am186ER and Am188ER microcontrollers contain logic that provides programmable chip-select generation for both memories and peripherals. The logic can be programmed to provide external ready and waitstate generation and latched address bits A1 and A2. The chip-select lines are active for all memory and I/O cycles in their programmed areas, whether they are generated by the CPU or by the integrated DMA unit.
control register (UMCS, LMCS, MMCS, PACS, and MPCS) contains a single-bit field that determines whether the external ready signal is required or ignored. The internal memory ignores the external ready signal. The number of wait states to be inserted for each access to an external peripheral or memory region is programmable. The chip-select control registers for UCS, LCS, MCS3-MCS0, PCS6, and PCS5 contain a two-bit field that determines the number of wait states from zero to three to be inserted. PCS3-PCS0 use three bits to provide additional values of 5, 7, 9, and 15 wait states. The chip-select control register for internal memory always specifies no wait states. When external ready is required, internally programmed wait states will always complete before external ready can terminate or extend a bus cycle. For example, if the internal wait states are set to insert two wait states, the processor samples the external ready pin during the first wait cycle. If external ready is asserted at that time, the access completes after six cycles (four cycles plus two wait states). If external ready is not asserted during the first wait state, the access is extended until ready is asserted, which is followed by one more wait state followed by t4.
Chip-Select Timing
The timing for the UCS and LCS outputs is modified from the original Am186 microcontroller. These outputs now assert in conjunction with the nonmultiplexed address bus for normal memory timing. To enable these outputs to be available earlier in the bus cycle, the number of programmable memory size selections has been reduced.
Ready and Wait-State Programming
The Am186ER and Am188ER microcontrollers can be programmed to sense a ready signal for each of the external peripheral or memory chip-select lines. The external ready signal can be either the ARDY or SRDY signal as shown in Figure 11. For diagrams of the synchronous ready waveforms and asynchronous ready waveforms, refer to page 97. Each external chip-select
ARDY
D
CLKOUTA
D
SRDY
R
D D
Rising Edge
A
Q Q Q
T F
Bus Ready
Falling Edge
Falling Edge
Figure 11. ARDY and SRDY Synchronization Logic Diagram
Am186TMER and Am188TMER Microcontrollers Data Sheet
49
Memory Maps
There are several possible ways to configure the address space of the Am186ER and Am188ER microcontrollers. Four of the most popular configurations are shown in Figure 12.
1 Mbyte External Flash (UCS)
1 Mbyte
1 Mbyte External Flash (UCS)
1 Mbyte
External Flash (UCS) 512 Kbytes
768 Kbytes
External Flash (UCS) 512 Kbytes External RAM (MCS3-MCS0) 256 Kbytes
Internal RAM
768 Kbytes 544 Kbytes 512 Kbytes
External RAM (LCS) External RAM (MCS) Internal RAM 0 Kbyte 0 Kbyte
32 Kbytes Internal RAM
32 Kbytes Internal RAM
512 Kbytes Flash No External RAM
256 Kbytes Flash Internal RAM at 0 32 Kbytes External RAM
512 Kbytes Flash Internal RAM at 0 256 Kbytes External RAM
Shaded areas represent open memory that can be used by other chip selects and the PCB, if located in memory.
Figure 12. Example Memory Maps
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A
T F
32 Kbytes 0 Kbyte
0 Kbyte
256 Kbytes Flash 512 Kbytes External RAM Internal RAM Located Above External RAM
Am186TMER and Am188TMER Microcontrollers Data Sheet
Chip-Select Overlap
Although programming the various chip selects on the Am186ER microcontroller so that multiple chip select signals are asserted for the same physical address is not recommended, it may be unavoidable in some systems. In such systems, the chip selects whose assertions overlap must have the same configuration for ready (external ready required or not required) and the number of wait states to be inserted into the cycle by the processor. The peripheral control block (PCB) and the internal memory are both accessed using internal signals. These internal signals function as chip selects configured with zero wait states and no external ready. Therefore, the PCB and inter nal memor y can be programmed to addresses that overlap external chip select signals if those external chip selects are programmed to zero wait states with no external ready required. When overlapping an additional chip select with either the LCS or UCS chip selects, it must be noted that setting the Disable Address (DA) bit in the LMCS or UMCS register will disable the address from being driven on the AD bus for all accesses for which the associated chip select is asserted, including any accesses for which multiple chip selects assert. The MCS and PCS chip select pins can be configured as either chip selects (normal function) or as PIO inputs or outputs. It should be noted; however, that the ready and wait state generation logic for these chip selects is in effect regardless of their configurations as chip selects or PIOs. This means that if these chip selects are enabled (by a write to the MMCS and MPCS for the MCS chip selects, or by a write to the PACS and MPCS registers for the PCS chip selects), the ready and wait state programming for these signals must agree with the programming for any other chip selects with which their assertion would overlap if they were configured as chip selects. Although the PCS4 signal is not available on an external pin, the ready and wait state logic for this signal still exists internal to the part. For this reason, the PCS4 address space must follow the rules for overlapping chip selects. The ready and wait-state logic for PCS6-PCS5 is disabled when these signals are configured as address bits A2-A1. Failure to configure overlapping chip selects with the same ready and wait state requirements may cause the processor to hang with the appearance of waiting for a ready signal. This behavior may occur even in a system in which ready is always asserted (ARDY or SRDY tied High). Configuring PCS in I/O space with LCS or any other chip select configured for memory address 0 is not consid-
ered overlapping of the chip selects. Overlapping chip selects refers to configurations where more than one chip select asserts for the same physical address.
Upper Memory Chip Select
The Am186ER and Am188ER microcontrollers provide a UCS chip select for the top of memory. On reset, the Am186ER and Am188ER microcontrollers begin fetching and executing instructions starting at memory location FFFF0h. Therefore, upper memory is usually used as instruction memory. To facilitate this usage, UCS defaults to active on reset, with a default memory range of 64 Kbyte from F0000h to FFFFFh, with external ready required and three wait states automatically inserted. The UCS memory range always ends at FFFFFh. The lower boundary is programmable. The Upper Memory Chip Select is configured through the Upper Memory Chip Select (UMCS) Register. During the address phase of a bus cycle when UCS is asserted, the DA bit in the UMCS Register enables or disables the AD15-AD0 bus. If the DA bit is set to 1, AD15-AD0 is not driven during the address phase of a bus cycle when UCS is asserted. If DA is cleared to 0, AD15-AD0 is driven during the address phase of a bus cycle. Disabling AD15-AD0 reduces power consumption and eliminates potential bus conflicts with memory or peripherals at high clock rates. The DA bit in the UMCS Register defaults to 0 at power-on reset.
D
R
A
Low Memory Chip Select
The Am186ER and Am188ER microcontrollers provide an LCS chip select for the bottom of memory. Because the interrupt vector table is located at the bottom of memory starting at 00000h, the LCS pin has traditionally been used to control data memory. The LCS pin is not active on reset. The Am186ER and Am188ER microcontrollers also allow the IMCS Register and internal memory to be programmed to address 0. This would allow the internal memory to be used for the interrupt vector table and data memory.
T F
Midrange Memory Chip Selects
The Am186ER and Am188ER microcontrollers provide four chip selects, MCS3-MCS0, for use in a user-locatable memory block. The base address of the memory block can be located anywhere within the 1-Mbyte memory address space, exclusive of the areas associated with the UCS and LCS chip selects, as well as the address range of the Peripheral Chip Selects, PCS6, PCS5, and PCS3-PCS0, if they are mapped to memory. The MCS address range can overlap the PCS address range if the PCS chip selects are mapped to I/O space. Unlike the UCS and LCS chip selects, the MCS outputs assert with the multiplexed AD address bus.
Am186TMER and Am188TMER Microcontrollers Data Sheet
51
Peripheral Chip Selects
The Am186ER and Am188ER microcontrollers provide six chip selects, PCS6-PCS5 and PCS3-PCS0, for use within a user-locatable memory or I/O block. PCS4 is not available on the Am186ER and Am188ER microcontrollers. The base address of the memory block can be located anywhere within the 1-Mbyte memory address space, exclusive of the areas associated with the UCS, LCS, and MCS chip selects, or they can be configured to access the 64-Kbyte I/O space. The PCS pins are not active on reset. PCS6-PCS5 can have from zero to three wait states. PCS3-PCS0 can have four additional wait-state values--5, 7, 9, and 15. Unlike the UCS and LCS chip selects, the PCS outputs assert with the multiplexed AD address bus. Note also that each peripheral chip select asser ts over a 256-byte address range, which is twice the address range covered by peripheral chip selects in the 80C186 and 80C188 microcontrollers.
The base address of the internal RAM is determined by the value of bits BA19-BA15 in the IMCS Register. Because the interrupt vector table is located at 00000h, it is not unusual to store the interrupt vector table in the internal RAM for faster access, and thus program the IMCS Register for a base address of 0. However, this scenario may lead to a memory address overlap between the IMCS and low memory chip select (LMCS) registers, as the base address of the LMCS Register is always 0 if activated.
Emulator and Debug Modes
There are two debug modes associated with the internal memory. One mode allows users to disable the internal RAM, and the other mode makes it possible to drive data on the external data bus during internal RAM read cycles. Normal operation of internal RAM has all control signals for reads and writes and data for writes visible externally. Accesses to internal memory can be detected externally by comparing the address on A19-A0 with the address space of the internal memory. Internal Memory Disable When this mode is activated, the internal RAM is disabled and all accesses into the internal memory space are made externally for debugging purposes. This mode is activated by pulling the S1/IMDIS pin Low during reset. To use this debug mode, internal memory space must first be activated via the IMCS Register. Show Read Enable
INTERNAL MEMORY
The Am186ER and Am188ER microcontrollers provide 32 Kbyte of on-chip RAM. The integration of memory helps to reduce the overall cost, power, and size of system designs. The internal memory also improves reliability with fewer connections and eases inventory management and system qualification because of the integrated supply. The internal RAM for the Am186ER microcontroller is a 16K x 16-bit-wide array (32 Kbyte) which provides the same performance as 16-bit external zero-wait-state RAM. For the Am188ER microcontroller, the internal RAM is a 32K x 8-bit-wide array (32 Kbyte) that provides the same performance as 8-bit external zero wait-state RAM.
Interaction with External RAM
The Am186ER and Am188ER microcontrollers include an Internal Memory Chip Select (IMCS) Register to control the mapping of the internal RAM. The internal address space can be located at any 32-Kbyte boundary within the 1-Mbyte memory address space, provided that it does not overlap any external chip selects. If an overlap does occur, the external chip select must be set to 0 wait states and to ignore external ready. If the internal and external chip selects overlap, both will be active, but the internal memory data will be used on reads. Writes, with all the corresponding external control signals, will occur to both devices. Special system consideration must be made for show read cycles, since those cycles will drive data out on reads. If internal and external chip selects overlap and the external chip selects are not set to 0 wait states and to ignore external ready, the results are unpredictable. Because of the many potential problems with overlapping chip selects, this practice is not recommended. 52
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A
T F
When this mode is activated, the data from the internal RAM read cycles are driven on the AD15-AD0 bus. Note that if a byte read is being shown, the unused byte will also be driven on the AD15-AD0 bus. This mode can be activated externally by pulling the S0/SREN pin Low during reset or by setting the SR bit in the IMCS Register. If this feature is activated externally using the SREN pin, the value of the SR bit is ignored. Many emulators assert the SREN pin. During an internal memory read with show read enabled, the address will be driven on the AD bus during t1 and t2. The data being read will be driven on the AD bus during t3 and t4 by the Am186ER or Am188ER microcontrollers. Special system care must be taken to avoid bus contention, because normal reads have the AD bus three-stated during t2, t3, and t4. It is best to ensure that no external device overlaps the internal memory space.
Am186TMER and Am188TMER Microcontrollers Data Sheet
REFRESH CONTROL UNIT
The Refresh Control Unit (RCU) automatically generates refresh bus cycles. After a programmable period of time, the RCU generates a memory read request to the bus interface unit. If the address generated during a refresh bus cycle is within the range of a properly programmed chip select, that chip select (with the exception of UCS and LCS) is activated when the bus interface unit executes the refresh bus cycle. The ready logic and wait states programmed for the region are also in force. If no chip select is activated, then external ready is required to terminate the refresh bus cycle. If the HLDA pin is active when a refresh request is generated (indicating a bus hold condition), then the Am186ER and Am188ER microcontrollers deactivate the HLDA pin in order to perform a refresh cycle. The external bus master must remove the HOLD signal for at least one clock in order to allow the refresh cycle to execute. The sequence of HLDA going inactive while HOLD is being held active can be used to signal a pending refresh request. The Am186ER and Am188ER microcontrollers' HOLD latency time, the period between HOLD request and HOLD acknowledge, is a function of the activity occurring in the processor when the HOLD request is received. A HOLD request is second only to DRAM refresh requests in priority of activity requests received by the processor. For example, in the case of a DMA transfer, the HOLD latency can be as great as four bus cycles. This occurs if a DMA word transfer operation is taking place from an odd address to an odd address (Am186ER microcontroller only). This is a total of 16 or more clock cycles if wait states are required. In addition, if locked transfers are performed, the HOLD latency time is increased by the length of the locked transfer.
The third is an internal interrupt from the asynchronous serial port. The five maskable interrupt request pins can be used as direct interrupt requests. Plus, INT3-INT0 can be cascaded with an 82C59A-compatible external interrupt controller if more inputs are needed. An external interrupt controller can be used as the system master by programming the internal interrupt controller to operate in slave mode. In all cases, nesting can be enabled so that ser vice routines for lower priority interrupts are interrupted by a higher priority interrupt.
Programming the Interrupt Control Unit
The Am186ER and Am188ER microcontrollers provide two methods for masking and unmasking the maskable interrupt sources. Each interrupt source has an interrupt control register (offsets 32h-44h) that contains a mask bit specific to that interrupt. In addition, the Interrupt Mask Register (offset 28h) is provided as a single source to access all of the mask bits. While changing a mask bit in either the mask register or the individual register will change the corresponding mask bit in the other register, there is a difference in exactly how the mask is updated. If the Interrupt Mask Register is written while interrupts are enabled, it is possible that an interrupt could occur while the register is in an undefined state. This can cause interrupts to be accepted even though they were masked both before and after the write to the Interrupt Mask Register. Therefore, the Interrupt Mask Register should only be written when interrupts are disabled. Mask bits in the individual interrupt control registers can be written while interrupts are enabled, and there will be no erroneous interrupt operation.
INTERRUPT CONTROL UNIT
The Am186ER and Am188ER microcontrollers can receive interrupt requests from a variety of sources, both internal and external. The internal interrupt controller arranges these requests by priority and presents them one at a time to the CPU. There are six external interrupt sources on the Am186ER/Am188ER microcontrollers--five maskable interrupt pins and one nonmaskable interrupt pin. In addition, there are six total internal interrupt sources-- three timers, two DMA channels, and the asynchronous serial port--that are not connected to external pins. The Am186ER and Am188ER microcontrollers provide three interrupt sources not present on the Am186 and Am188 microcontrollers. The first is an additional external interrupt pin (INT4), which operates much like the already existing interrupt pins (INT3-INT0). The second is an internal maskable watchdog timer interrupt.
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T F
TIMER CONTROL UNIT
There are three 16-bit programmable timers in the Am186ER and Am188ER microcontrollers. Timer 0 and timer 1 are connected to four external pins (each has an input and an output). These two timers can be used to count, time external events, or generate nonrepetitive or variable-duty-cycle waveforms. In addition, timer 1 can be configured as a watchdog timer interrupt. Note that a hardware watchdog timer (WDT) has been added to the Am186ER and Am188ER microcontrollers. Use of the WDT is recommended for applications requiring this reset functionality. To maintain compatibility with previous versions of the Am186ER and Am188ER microcontrollers, Timer 1 can be configured as a watchdog timer and can generate a maskable watchdog timer interrupt. The maskable watchdog timer interrupt provides a mechanism for detecting software crashes or hangs. The TMROUT1 output is internally connected to the watchdog timer interrupt. The TIMER1 Count Register must then be reloaded at intervals less than the TIMER1 max count to assure the watchdog interrupt is not taken.
Am186TMER and Am188TMER Microcontrollers Data Sheet
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If the code crashes or hangs, the TIMER1 countdown will cause a watchdog interrupt. Timer 2 is not connected to any external pins. It can be used for real-time coding and time-delay applications. It can also be used as a prescale to timers 0 and 1, or as a DMA request source. The timers are controlled by eleven 16-bit registers in the peripheral control block. A timer's timer-count register contains the current value of that timer. The timercount register can be read or written with a value at any time, whether the timer is running or not. The microcontroller increments the value of the timer-count register each time a timer event occurs. Each timer also has a maximum-count register that defines the maximum value the timer will reach. When the timer reaches the maximum value, it resets to 0 during the same clock cycle--the value in the maximum-count register is never stored in the timer-count register. Also, timers 0 and 1 have a secondary maximum-count register. Using both the primary and secondary maximumcount registers lets the timer alternate between two maximum values. If the timer is programmed to use only the primary maximum-count register, the timer output pin switches Low for one clock cycle after the maximum value is reached. If the timer is programmed to use both of its maximumcount registers, the output pin indicates which maximum-count register is currently in control, thereby creating a waveform. The duty cycle of the waveform depends on the values in the maximum-count registers. Each timer is serviced every fourth clock cycle, so a timer can operate at a speed of up to one-quarter the internal clock frequency. A timer can be clocked externally at this same frequency; however, because of internal synchronization and pipelining of the timer circuitry, the timer output may take up to six clock cycles to respond to the clock or gate input.
The WDT can be configured to cause either an NMI interrupt or a system reset upon timeout. If the WDT is configured for NMI, the NMIFLAG in the WDTCON Register is set when the NMI is generated. The NMI interrupt service routine (ISR) should examine this flag to determine if the interrupt was generated by the WDT or by an external source. If the NMIFLAG is set, the ISR should clear the flag by writing the correct keyed sequence to the WDTCON Register. If the NMIFLAG is set when a second WDT timeout occurs, a WDT system reset is generated rather than a second NMI event. When the processor takes a WDT reset, either because of a single WDT event with the WDT configured to generate resets or due to a WDT event with the NMIFLAG set, the RSTFLAG in the WDTCON Register is set. This allows system initialization code to differentiate between a hardware reset and a WDT reset and take appropriate action. The RSTFLAG is cleared when the WDTCON Register is read or written. The processor does not resample external pins during a WDT reset. This means that the clocking, the Reset Configuration Register, and any other features that are user-selectable during reset do not change when a WDT system reset occurs. PIO Mode and PIO Direction registers are not affected and PIO data is undefined. All other activities are identical to those of a normal system reset.
WATCHDOG TIMER
The Am186ER/Am188ER microcontrollers provide a hardware watchdog timer. The Watchdog Timer (WDT) can be used to regain control of the system when software fails to respond as expected. The WDT is inactive after reset. It can be modified only once by a keyed sequence of writes to the Watchdog Timer Control Register (WDTCON) following reset. This single write can either disable the timer or modify the timeout period and the action taken upon timeout. A keyed sequence is also required to reset the current WDT count. This behavior ensures that randomly executing code will not prevent a WDT event from occurring. The WDT supports up to a 1.34-second timeout period in a 50-MHz system.
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Note: The Watchdog Timer (WDT) is inactive after reset.
DIRECT MEMORY ACCESS
T F
Direct memory access (DMA) permits transfer of data between memory and peripherals without CPU involvement. The DMA unit in the Am186ER and Am188ER microcontrollers, shown in Figure 13, provides two high-speed DMA channels. Data transfers can occur between memory and I/O spaces (e.g., memory to I/O) or within the same space (e.g., memory-to-memory or I/O-to-I/O). Additionally, bytes (also words on the Am186ER microcontroller) can be transferred to or from even or odd addresses. Only two bus cycles (a minimum of eight clocks) are necessary for each data transfer. Each channel accepts a DMA request from one of the four sources: the channel request pin (DRQ1-DRQ0), Timer 2, a serial port, or system software. The two DMA channels can be programmed with different priorities to resolve simultaneous DMA requests, and transfers on one channel can interrupt the other channel. The DMA channels can be directly connected to the asynchronous serial port. DMA and serial port transfer is accomplished by programming the DMA controller to perform transfers between a data source in memory or I/O space and a serial port transmit or receive register.
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Am186TMER and Am188TMER Microcontrollers Data Sheet
DMA Operation
Each channel has six registers in the peripheral control block that define specific channel operations. The DMA registers consist of a 20-bit source address (two registers), a 20-bit destination address (two registers), a 16bit transfer count register, and a 16-bit control register. The DMA transfer count register (DTC) specifies the number of DMA transfers to be performed. Up to 64K transfers can be performed with automatic termination. The DMA control registers define the channel operation. All registers can be modified during any DMA activity. Any changes made to the DMA registers are reflected immediately in DMA operation. The Am188ER microcontroller's maximum DMA transfer rates are half that of those listed in Table 9 for the Am186ER microcontroller.
For DMA from the asynchronous serial port, the receive data register address, either I/O-mapped or memory-mapped, should be specified as a byte source for the DMA by writing the address of the register into the DMA Source and DMA Source High registers. The source address (the address of the receive data register) should be configured as a constant throughout the DMA. The asynchronous serial port receiver acts as the synchronizing device; therefore, the DMA channel should be configured as source- synchronized.
DMA Channel Control Registers
Each DMA control register determines the mode of operation for the particular DMA channel. This register specifies the following: n Mode of synchronization n Whether bytes or words are transferred (Am186ER microcontroller only) n Whether an interrupt is generated after the last transfer n Whether DMA activity ceases after a programmed number of DMA cycles n Relative priority of the DMA channel with respect to the other DMA channel
Table 9.
Am186ER Microcontroller Maximum DMA Transfer Rates
Maximum DMA Transfer Rate (Mbyte/s) 50 MHz 40 MHz 10 10 6.6 8 33 MHz 8.25 8.25 5.5 6.6 25 MHz 6.25 6.25 4.16 5
Synchronization Type
Unsynchronized Source Synch Destination Synch (CPU needs bus) Destination Synch (CPU does not need bus)
12.5 12.5 8.33 10.00
Asynchronous Serial Port/DMA Transfers
The enhanced Am186ER/Am188ER microcontrollers can DMA to and from the asynchronous serial port. This is accomplished by programming the DMA controller to perform transfers between a data buffer (located either in memor y or I/O space) and an asynchronous serial por t data register (SPTD or SPRD). Note that when a DMA channel is in use by the asynchronous serial port, the corresponding external DMA request signal is deactivated. For DMA to the asynchronous serial port, the transmit data register address, either I/O-mapped or memorymapped, should be specified as a byte destination for the DMA by writing the address of the register into the DMA destination low and DMA destination high registers. The destination address (the address of the transmit data register) should be configured as a constant throughout the DMA operation. The asynchronous serial port transmitter acts as the synchronizing device; therefore, the DMA channel should be configured as destination-synchronized.
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n Whether the source address is incremented, decremented, or maintained constant after each transfer n Whether the source address addresses memory or I/O space n Whether the destination address is incremented, decremented, or maintained constant after transfers n Whether the destination address addresses memory or I/O space
T F
DMA Priority
The DMA channels can be programmed so that one channel is always given priority over the other, or they can be programmed to alternate cycles when both have DMA requests pending. DMA cycles always have priority over internal CPU cycles, except between locked memory accesses or word accesses to odd memory locations. However, an external bus hold takes priority over an internal DMA cycle. Because an interrupt request, other than an NMI, cannot suspend a DMA operation and the CPU cannot access memory during a DMA cycle, interrupt latency time suffers during sequences of continuous DMA cycles. An NMI request, however, causes all internal DMA activity to halt. This allows the CPU to respond quickly to the NMI request.
Am186TMER and Am188TMER Microcontrollers Data Sheet
55
20-bit Adder/Subtractor
Adder Control Logic
Timer Request DRQ1/Serial Port Request Selection Logic
20
DRQ0/Serial Port
Transfer Counter Ch. 1 Destination Address Ch. 1 Source Address Ch. 1 Transfer Counter Ch. 0 Destination Address Ch. 0 Source Address Ch. 0 DMA Control Logic
Interrupt Request
Channel Control Register 1 Channel Control Register 0 20 16
Internal Address/Data Bus
Figure 13. DMA Unit Block Diagram
ASYNCHRONOUS SERIAL PORT
The Am186ER and Am188ER microcontrollers provide an asynchronous serial port. The asynchronous serial port is a two-pin interface that permits full-duplex bidirectional data transfer. The asynchronous serial port supports the following features: n Full-duplex operation n 7-bit or 8-bit data transfers n Odd, even, or no parity n 1 or 2 stop bits
If additional RS-232 signals are required, they can be created with available PIO pins. The asynchronous serial port transmit and receive sections are double buffered. Break character, framing, parity, and overrun error detection are provided. Exception interrupt generation is programmable by the user. The transmit/receive clock is based on the internal processor clock, which is divided down internally to the serial port operating frequency. The serial port permits 7bit and 8-bit data transfers. DMA transfers using the serial port are supported. The serial port generates one interrupt for any of three serial port events--transmit complete, data received, and receive error. The serial port can be used in power-save mode, but the software must adjust the transfer rate to correctly 56
D
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A
reflect the new internal operating frequency and must ensure that the serial port does not receive any information while the frequency is being changed.
T F
DMA Transfers through the Serial Port
The DMA channels can be directly connected to the asynchronous serial port. DMA and serial port transfer is accomplished by programming the DMA controller to perform transfers between a memory or I/O space and a serial port transmit or receive register. For more information see the DMA control register descriptions in the Am186ER and Am188ER Microcontrollers User's Manual, order #21684.
SYNCHRONOUS SERIAL INTERFACE
The synchronous serial interface (SSI) enables the Am186ER and Am188ER microcontrollers to communicate with application-specific integrated circuits (ASICs) that require reprogrammability but are short on pins. This four-pin interface permits half-duplex, bidirectional data transfer at speeds of up to 25 Mbit/s. Unlike the asynchronous serial port, the SSI operates in a master/slave configuration. The Am186ER and Am188ER microcontrollers are the master ports. The SSI interface provides four pins for communicating with system components: two enables (SDEN0 and SDEN1), a clock (SCLK), and a data pin (SDATA). Five
Am186TMER and Am188TMER Microcontrollers Data Sheet
registers are used to control and monitor the interface. Refer to Figure 14 and Figure 15 on page 58 for diagrams of SSI reads and writes.
Four-Pin Interface
The two enable pins SDEN1-SDEN0 can be used directly as enables for up to two peripheral devices. Transmit and receive operations are synchronized between the master (Am186ER or Am188ER microcontroller) and slave (peripherals) by means of the SCLK output. SCLK is derived from the internal processor clock and is the processor clock divided by 2, 4, 8, or 16.
After power-on reset, the PIO pins default to various configurations. The column titled Power-On Reset Status in Table 3 and Table 4 on page 36 lists the defaults for the PIOs. The system initialization code must reconfigure the PIOs as required.
Note: WDT reset does not reset PIO registers.
The A19-A17 address pins default to normal operation on power-on reset, allowing the processor to correctly begin fetching instructions at the boot address FFFF0h. The DT/R, DEN, and SRDY pins also default to normal operation on power-on reset. Note that emulators use A19, A18, A17, S6, and UZI. System designers using these signals as PIOs should check with their emulator vendor for limitations on emulator operation. If the AD15-AD0 bus override is enabled on power-on reset, then S6/CLKSEL2 and UZI/CLKSEL1 revert to normal operation instead of PIO input with pullup. Many emulators assert the ADEN override. If BHE/ADEN ( A m 1 8 6 E R m i c r o c o n t r o l l e r ) o r RF S H 2 / A D E N (Am188ER microcontroller) is held Low during poweron reset, the AD15-AD0 bus override is enabled.
PROGRAMMABLE I/O (PIO) PINS
There are 32 pins on the Am186ER and Am188ER microcontrollers that are available as multipurpose signals. Table 3 and Table 4 on page 36 list the PIO pins. Each of these pins can be used as a user-programmable input or output signal if the normal shared function is not needed. If a pin is enabled to function as a PIO signal, the preassigned signal function is disabled and does not affect the level on the pin. A PIO signal can be configured to operate as an input (with or without a weak pullup or pulldown), as an output, or as an open-drain output. Configuration as an open-drain output is accomplished by keeping the appropriate PDATA bits constant in the PIO data register and writing the data value into its associated bit position in the PIO direction register, so the output is either driving Low or is disabled, depending on the data.
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T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
57
PB=0 DR/DT=0
PB=1 DR/DT=0
PB=0 DR/DT=1
PB=1 DR/DT=0
PB=0 DR/DT=1
PB=1 DR/DT=0
PB=0 DR/DT=1
PB=0 DR/DT=0
SDEN1 or SDEN0 SCLK SDATA Poll SSS for PB=0 Write to SSD Write to SSC, bit DE=1 Write to SSD Poll SSS for PB=0 Write to SSD Poll SSS for PB=0
Figure 14. Synchronous Serial Interface Multiple Write
PB=0 DR/DT=0
PB=1 DR/DT=0
PB=0 DR/DT=1
PB=1 DR/DT=0
SDEN1 or SDEN0 SCLK SDATA
Write to SSD Write to SSC, bit DE=1
D
Poll SSS for PB=0
R
A
PB=0 DR/DT=1
PB=1 DR/DT=0
T F
PB=0 DR/DT=1
Write to SSC, bit DE=0
PB=0 DR/DT=0
Poll SSS for PB=0 Read from SSR
Poll SSS for PB=0
Read from SSR (dummy)
Write to SSC, bit DE=0
Read from SSR
Figure 15. Synchronous Serial Interface Multiple Read
58
Am186TMER and Am188TMER Microcontrollers Data Sheet
LOW-VOLTAGE OPERATION
The low-voltage operation of the Am186ER and Am188ER microcontrollers is an enabling technology for the design of portable systems with long battery life. This capability, combined with CPU clock management, enables design of very low-power computing systems.
5-V supply, then the 5-V circuitry in the system may start driving the processor's inputs above the maximum levels (V CC + 2.6 V). The system design should ensure that the 5-V supply does not exceed 2.6 V above the 3.3-V supply during a power-on sequence. n Preferably, all inputs will be driven by sources that can be three-stated during a system reset condition. The system reset condition should persist until stable VCC conditions are met. This should help ensure that the maximum input levels are not exceeded during power-up conditions. n Preferably, all pullup resistors will be tied to the 3.3-V supply, which will ensure that inputs requiring pullups are not over stressed during power-up.
Low-Voltage Standard
Industry standards for low-voltage operation are emerging to facilitate the design of components that will make up a complete low-voltage system. As a guideline, the Am186ER and Am188ER microcontroller specifications follow the first article or regulated version of the JEDEC 8.0 low-voltage proposal. This standard proposal calls for a VCC range of 3.3 V 10%.
Power Savings
CMOS dynamic power consumption is proportional to the square of the operating voltage multiplied by capacitance and operating frequency. Static CPU operation can reduce power consumption by enabling the system designer to reduce operating frequency when possible. However, operating voltage is always the dominant factor in power consumption. By reducing the operating voltage from 5 V to 3.3 V for any device, the power consumed is reduced by 56%. Reduction of CPU and core logic operating voltage dramatically reduces overall system power consumption. Additional power savings can be realized as low-voltage mass storage and peripheral devices become available. Two basic strategies exist in designing systems containing the Am186ER and Am188ER microcontrollers. The first strategy is to design a homogenous system in which all logic components operate at 3.3 V. This provides the lowest overall power consumption. However, system designers may need to include devices for which 3.3-V versions are not available. In the second strategy, the system designer must then design a mixed 5-V/3.3-V system. This compromise enables the system designer to minimize the core logic power consumption while still including functionality of the 5-V features. The choice of a mixed voltage system design also involves balancing design complexity with the need for the additional features.
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T F
Input/Output Circuitry
To accommodate current 5-V systems, the Am186ER and Am188ER microcontrollers have 5-V tolerant I/O drivers. The drivers produce TTL-compatible drive output (minimum 2.4-V logic High) and receive TTL and CMOS levels (up to VCC + 2.6 V). The following are some design issues that should be considered when upgrading an Am186ER microcontroller 5-V design: n During power-up, if the 3.3-V supply has a significant delay in achieving stable operation relative to
Am186TMER and Am188TMER Microcontrollers Data Sheet
59
ABSOLUTE MAXIMUM RATINGS
Temperature under bias: Commercial (TC) ........................0C to + 100C Storage temperature ..................-65C to + 125C Voltage on any pin with respect to ground.......................... -0.5 V to VCC + 2.6 V*
OPERATING RANGES
TC (Commercial) ............................ 0C to +100C Industrial* (TA) ..............................-40C to + 85C VCC up to 50 MHz ............................. 3.3 V 0.3 V Where: TC = case temperature TA = ambient temperature
Notes:
Stresses above those listed under Absolute Maximum Ratings may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.
*X1 and X2 are not 5-V-tolerant and have a range of -0.5 V to
Notes:
Operating Ranges define those limits between which the functionality of the device is guaranteed. versions of Am186ER and Am188ER microcontrollers are available in 25- and 33-MHz operating frequencies only.
*Industrial
VCC.
DC CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL OPERATING RANGES
Symbol Parameter Description VIL VIH VIH VOL VOH ICC ILI IIH IIL ILO CIN COUT Input Low Voltage Input High Voltage Clock Input High Voltage (X2, X1) Output Low Voltage Output High Voltage Power Supply Current Input Leakage Current Input Leakage Current Input Leakage Current Output Leakage Current Input Capacitance I/O Capacitance IOL = 4.0 mA IOH = -1.0 mA Note 8 Note 1 Note 2 Notes
Notes: 1. This parameter is for inputs without pullup or pulldown resistors and for which 0 VIN VCC. 2. This parameter is for inputs without pullup or pulldown resistors and for which 0 VIN 5 V. 3. This parameter is for inputs with pulldown resistors and for which VIH = 2.4 V. 4. This parameter is for inputs with pullup resistors and for which VIL = 0.45 V. 5. This parameter is for three-state outputs where VEXT is driven on the three-state output and 0 VEXT VCC. 6. This parameter is for three-state outputs where VEXT is driven on the three-state output and 0 VEXT 5 V. 7. This parameter has not been fully tested. 8. Current is measured with the device in RESET with X1 and X2 driven and all other non-power pins open but held High or Low.
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Note 3 Note 4 Note 5 Note 6
A
T F
Preliminary Min 2.0 Max 0.8 -0.3 VCC + 2.6 VCC 0.45 2.4 5.0 15 50 200 -400 15 50 10 14
Unit V V V V V mA/ MHz A A A A pF pF
FC =1 MHz (Note 7) FC =1 MHz (Note 7)
60
Am186TMER and Am188TMER Microcontrollers Data Sheet
THERMAL CHARACTERISTICS TQFP Package
The Am186ER and Am188ER microcontrollers are specified for operation with case temperature ranges from 0C to +100C for a commercial temperature device. Case temperature is measured at the top center of the package as shown in Figure 16. The various temperatures and thermal resistances can be determined using the equations in Figure 17 with information given in Table 10. JA is the sum of JC and CA . JC is the internal thermal resistance of the assembly. CA is the case to ambient thermal resistance.
The variable P is power in watts. Typical power supply current (ICC) for the Am186ER and Am188ER microcontrollers is 3.7 mA per MHz of clock frequency. JA TC JC CA
JA = JC + CA Figure 16. Thermal Resistance (C/Watt)
TJ = TC + (P JC) TJ = TA + (P JA) TC = TJ - (P TC = TA + (P
JA = JC + CA P = ICC freq (MHz) VCC
JC) CA) TA = TJ - (P JA) TA = TC - (P CA)
Figure 17. Thermal Characteristics Equations
Table 10.
D
Package/Board
PQFP/2-Layer
R
Thermal Characteristics (C/Watt)
Airflow (Linear Feet per Minute) 0 fpm 200 fpm 400 fpm 600 fpm 0 fpm 200 fpm 400 fpm 600 fpm 0 fpm 200 fpm 400 fpm 600 fpm 0 fpm 200 fpm 400 fpm 600 fpm JC 7 7 7 7 10 10 10 10 5 5 5 5 6 6 6 6 CA 38 32 28 26 46 36 30 28 18 16 14 12 24 22 20 18 JA 45 39 35 33 56 46 40 38 23 21 19 17 30 28 26 24
A
T F
TQFP/2-Layer
PQFP/4-Layer to 6-Layer
TQFP/4-Layer to 6-Layer
Am186TMER and Am188TMER Microcontrollers Data Sheet
61
Typical Ambient Temperatures
The typical ambient temperature specifications are based on the following assumptions and calculations: The commercial operating range of the Am186ER and Am188ER microcontrollers is a case temperature TC of 0 to 100 degrees Centigrade. TC is measured at the top center of the package. An increase in the ambient temperature causes a proportional increase in TC. The 50-MHz microcontroller is specified as 3.3 V, plus or minus 10%. Therefore, 3.6 V is used for calculating typical power consumption on the 50-MHz microcontroller. Typical power supply current (ICC) in normal usage is estimated at 3.7 mA per MHz of microcontroller clock rate. Typical power consumption can be calculated using the following formula: (Watts) = (3.7 mA/MHz) 50 MHz (3.6 V/1000) Table 11 shows the variables that are used to calculate the typical power consumption value for each version of the Am186ER and Am188ER microcontrollers.
Table 12. Junction Temperature Calculation
Speed/ Pkg/ Board 50/P2 50/T2 50/P4-6 50/T4-6 40/P2 40/T2 40/P4-6 40/T4-6 33/P2 33/T2 33/P4-6 33/T4-6 25/P2 25/T2 25/P4-6 25/T4-6 TJ = TC + (P JC) TC 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 P 0.662 0.662 0.662 0.662 0.522 0.522 0.522 0.522 0.432 0.432 0.432 0.432 0.342 0.342 0.342 0.342
JC
7 10 5 6 7 10 5 6 7 10 5 6 7 5 6
TJ 104.6 106.6 103.3 104.0 103.7 105.2 102.6 103.1 103.0 104.3 102.2 102.6 102.4 103.4 101.7 102.1
Table 11.
Typical Power Consumption Calculation
Typical Power (P) in Watts 0.662 0.522 0.432 0.342
P = MHz ICC Volts / 1000 MHz 50 40 33 25 Typical ICC 3.7 3.7 3.7 3.7 Volts 3.6 3.6 3.6 3.6
Thermal resistance is a measure of the ability of a package to remove heat from a semiconductor device. A safe operating range for the device can be calculated using the following formulas from Figure 17 and the variables in Table 10. By using the maximum case rating T C, the typical power consumption value from Table 11, and JC from Table 10, the junction temperature TJ can be calculated by using the following formula from Figure 17. TJ = TC + (P JC) Table 12 shows TJ values for the various versions of the Am186ER and Am188ER microcontrollers. The Speed/Pkg/Board column in Table 12 indicates the clock speed in MHz, the type of package (P for PQFP and T for TQFP), and the type of board (2 for 2-layer and 4-6 for 4-layer to 6-layer).
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By using T J from Table 12, the typical power consumption value from Table 11, and a JA value from Table 10, the typical ambient temperature TA can be calculated using the following formula from Figure 17. TA = TJ - (P JA)
T F
10
For example, TA for a 50-MHz PQFP design with a 2-layer board and 0 fpm airflow is calculated as follows:
TA = 104.6 - (0.662 45) TA = 74.81 In this calculation, TJ comes from Table 12, P comes from Table 11, and JA comes from Table 10. See Table 13. TA for a 33-MHz TQFP design with a 4-layer to 6-layer board and 200 fpm airflow is calculated as follows: TA = 102.6 - (0.432 28) TA = 90.5 See Table 16 for the result of this calculation.
Table 13 through Table 16 and Figure 18 through F i g u r e 2 1 s h o w TA b a s e d o n t h e p r e c e d i n g assumptions and calculations for a range of JA values with airflow from 0 linear feet per minute to 600 linear feet per minute.
62
Am186TMER and Am188TMER Microcontrollers Data Sheet
Table 13 shows typical maximum ambient temperatures in degrees Centigrade for a PQFP package used with a 2-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 18 illustrates the typical temperatures in Table 13.
Table 13.
Microcontroller Speed 50 MHz 40 MHz 33 MHz 25 MHz
Typical Ambient Temperatures for PQFP with Two-Layer Board
Linear Feet per Minute Airflow 0 fpm 74.81 80.2 83.56 87.0 200 fpm 78.8 83.3 86.2 89.1 400 fpm 81.43 85.4 87.9 90.4 600 fpm 82.8 86.5 88.7 91.1
Typical Power (Watts) 0.662 0.522 0.432 0.342
94 92 Typical Ambient Temperature (Degrees C) 90 x 88 x 86 84 82 80 78 76 74 q x
I I
I
q
Legend: s 50 MHz q 40 MHz
H 33 MHz
x 25 Mhz
D
s
0 fpm
R
s
A
q
T F
x
I
q
s
s
200 fpm
400 fpm
600 fpm
Airflow (Linear Feet Per Minute)
Figure 18. Typical Ambient Temperatures for PQFP with Two-Layer Board
Am186TMER and Am188TMER Microcontrollers Data Sheet
63
Table 14 shows typical maximum ambient temperatures in degrees Centigrade for a TQFP package used with a 2-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 19 illustrates the typical temperatures in Table 14.
Table 14.
Microcontroller Speed 50 MHz 40 MHz 33 MHz 25 MHz
Typical Ambient Temperatures for TQFP with Two-Layer Board
Linear Feet per Minute Airflow 0 fpm 69.5 76.0 80.1 84.2 200 fpm 76.1 81.2 84.4 87.7 400 fpm 80.1 84.3 87.0 89.7 600 fpm 81.4 85.4 87.9 90.4
Typical Power (Watts) 0.662 0.522 0.432 0.342
95
90 Typical Ambient Temperature (Degrees C) x 85
x
I
x
I
q
80
I
q 75
Legend: s 50 MHz q 40 MHz
H 33 MHz
x 25 Mhz
D
70 s 65
0 fpm
R
s
A
q
T F
x
I
q
s
s
200 fpm
400 fpm
600 fpm
Airflow (Linear Feet Per Minute)
Figure 19. Typical Ambient Temperatures for TQFP with Two-Layer Board
64
Am186TMER and Am188TMER Microcontrollers Data Sheet
Table 15 shows typical maximum ambient temperatures in degrees Centigrade for a PQFP package used with a 4-layer to 6-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 20 illustrates the typical temperatures in Table 15.
Table 15. Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board
Microcontroller Speed 50 MHz 40 MHz 33 MHz 25 MHz Typical Power (Watts) 0.662 0.522 0.432 0.342 Linear Feet per Minute Airflow 0 fpm 88.0 90.6 92.3 93.8 200 fpm 89.4 91.6 93.1 94.5 400 fpm 90.7 92.7 93.9 95.2 600 fpm 92.0 93.7 94.9 95.9
97 96 Typical Ambient Temperature (Degrees C) 95 x 94 93 92 91 q 90 89 88 87 x x
I I
I
q
Legend: s 50 MHz q 40 MHz
H 33 MHz
x 25 Mhz
Figure 20. Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board
D
s
0 fpm
R
s
A
q
T F
x
I
q
s
s
200 fpm
400 fpm
600 fpm
Airflow (Linear Feet Per Minute)
Am186TMER and Am188TMER Microcontrollers Data Sheet
65
Table 16 shows typical maximum ambient temperatures in degrees Centigrade for a TQFP package used with a 4-layer to 6-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 21 illustrates the typical temperatures in Table 16.
Table 16.
Microcontroller Speed 50 MHz 40 MHz 33 MHz 25 MHz
Typical Ambient Temperatures for TQFP with Four-Layer to Six-Layer Board
Typical Power (Watts) 0.662 0.522 0.432 0.342 Linear Feet per Minute Airflow 0 fpm 84.1 87.44 89.64 91.84 200 fpm 85.5 88.5 90.5 92.5 400 fpm 86.8 89.5 91.4 93.2 600 fpm 88.1 90.6 92.2 93.9
97 96 95 Typical Ambient Temperature (Degrees C) 94 93 x 92 91 90 89 88 87 86 85 84 x x
I
Legend: s 50 MHz q 40 MHz
H 33 MHz
x 25 Mhz
D
q s
0 fpm
R
I
A
I
T F
x
I
q q
q s
s
s
200 fpm
400 fpm
600 fpm
Airflow (Linear Feet Per Minute)
Figure 21. Typical Ambient Temperatures for TQFP with Four-Layer to Six-Layer Board
66
Am186TMER and Am188TMER Microcontrollers Data Sheet
COMMERCIAL AND INDUSTRIAL SWITCHING CHARACTERISTICS AND WAVEFORMS
In the switching waveforms that follow, several abbreviations are used to indicate the specific periods of a bus cycle. These periods are referred to as time states. A typical bus cycle is composed of four consecutive time states: t1, t2, t3, and t4. Wait states, which represent multiple t3 states, are referred to as tw states. When no bus cycle is pending, an idle (ti) state occurs. I n th e sw i t c h i ng pa r a me t e r d e s c r i p ti o n s, t h e multiplexed address is referred to as the AD address bus; the nonmultiplexed address is referred to as the A address bus.
Key to Switching Waveforms
WAVEFORM INPUT Must be Steady May Change from H to L May Change from L to H Don't Care, Any Change Permitted Does Not Apply OUTPUT Will be Steady Will be Changing from H to L Will be Changing from L to H Changing, State Unknown
D
R
Invalid
A
Center Line is HighImpedance Off State
T F
Invalid
Am186TMER and Am188TMER Microcontrollers Data Sheet
67
Alphabetical Key to Switching Parameter Symbols
Parameter Symbol tARYCH tARYCHL tARYLCL tAVBL tAVCH tAVLL tAVRL tAVWL tAZRL tCH1CH2 tCHAV tCHCK tCHCL tCHCSV tCHCSX tCHCTV tCHCV tCHCZ tCHDX tCHLH tCHLL tCHRFD tCHSV tCICOA tCICOB tCKHL tCKIN tCKLH tCL2CL1 tCLARX tCLAV tCLAX tCLAZ tCLCH tCLCK tCLCL tCLCLX tCLCSL tCLCSV tCLDOX tCLDV No. 49 51 52 87 14 12 66 65 24 45 68 38 44 67 18 22 64 63 8 9 11 79 3 69 70 39 36 40 46 50 5 6 Description ARDY Resolution Transition Setup Time ARDY Inactive Holding Time ARDY Setup Time A Address Valid to WHB, WLB Low AD Address Valid to Clock High AD Address Valid to ALE Low A Address Valid to RD Low A Address Valid to WR Low AD Address Float to RD Active CLKOUTA Rise Time CLKOUTA High to A Address Valid X1 High Time CLKOUTA High Time CLKOUTA High to LCS/UCS Valid MCS/PCS Inactive Delay Control Active Delay 2 Command Lines Valid Delay (after Float) Command Lines Float Delay Status Hold Time ALE Active Delay ALE Inactive Delay CLKOUTA High to RFSH Valid Status Active Delay X1 to CLKOUTA Skew X1 Fall Time X1 Period X1 Rise Time Parameter Symbol tCLDX tCLEV tCLHAV tCLRF tCLRH tCLRL tCLSH tCLSL tCLSRY tCLTMV tCOAOB tCVCTV tCVCTX tCVDEX tCXCSX tDVCL tDVSH tDXDL tHVCL No. 2 71 62 82 27 25 4 72 48 55 83 20 31 21 17 1 75 19 58 53 54 86 23 10 13 61 84 57 85 29 59 28 26 77 78 47 35 34 33 32 Description Data in Hold CLKOUTA Low to SDEN Valid HLDA Valid Delay CLKOUTA High to RFSH Invalid RD Inactive Delay RD Active Delay Status Inactive Delay CLKOUTA Low to SCLK Low SRDY Transition Hold Time Timer Output Delay CLKOUTA to CLKOUTB Skew Control Active Delay 1 Control Inactive Delay DEN Inactive Delay Data in Setup
X1 to CLKOUTB Skew
D
15 43 37 42 80 81 16 30 7
CLKOUTA Fall Time
ARDY Active Hold Time Address Hold
R
A
tINVCH tINVCL tLCRF tLHAV tLHLL tLLAX tLRLL tRESIN tRFCY tRHAV tRHDX tRHLH tRLRH tSHDX tSLDV tSRYCL tWHDEX tWHDX tWHLH tWLWH tLOCK
T F
Data Valid to SCLK High HOLD Setup DEN Inactive to DT/R Low Peripheral Setup Time DRQ Setup Time ALE High to Address Valid ALE Width Maximum PLL Lock Time LCS Precharge Pulse Width RES Setup Time RFSH Cycle Time RD High to Data Hold on AD Bus RD Inactive to ALE High RD Pulse Width SCLK High to SPI Data Hold SCLK Low to SPI Data Valid SRDY Transition Setup Time WR Inactive to DEN Inactive Data Hold after WR WR Inactive to ALE High WR Pulse Width
MCS/PCS Hold from Command Inactive
LCS Inactive to RFSH Active Delay
AD Address Hold from ALE Inactive
RD Inactive to AD Address Active
AD Address Valid Delay AD Address Float Delay CLKOUTA Low Time X1 Low Time CLKOUTA Period LCS Inactive Delay LCS Active Delay MCS/PCS Active Delay Data Hold Time Data Valid Delay
Notes: The following parameters are not defined or used at this time: 41, 56, 60, 73, 74, and 76.
68
Am186TMER and Am188TMER Microcontrollers Data Sheet
Numerical Key to Switching Parameter Symbols
Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 Parameter Symbol Description tDVCL tCLDX tCHSV tCLSH tCLAV tCLAX tCLDV tCHDX tCHLH tLHLL tCHLL tAVLL tLLAX tAVCH tCLAZ tCLCSV tCXCSX tCHCSX tDXDL tCVCTV tCVDEX tCHCTV tLHAV tAZRL tCLRL tRLRH tCLRH tRHAV tRHLH Data in Setup Data in Hold Status Active Delay Status Inactive Delay AD Address Valid Delay Address Hold Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay AD Address Valid to ALE Low AD Address Hold from ALE Inactive AD Address Valid to Clock High AD Address Float Delay MCS/PCS Active Delay MCS/PCS Hold from Command Inactive MCS/PCS Inactive Delay DEN Inactive to DT/R Low Control Active Delay 1 DEN Inactive Delay Control Active Delay 2 ALE High to Address Valid RD Active Delay RD Pulse Width AD Address Float to RD Active Number 43 44 45 46 47 48 49 50 51 52 53 54 55 57 58 59 61 62 63 64 65 66 67 68 69 70 71 72 75 77 78 79 80 81 82 83 84 85 86 87 Parameter Symbol Description tCLCH CLKOUTA Low Time tCHCL tCH1CH2 tCL2CL1 tSRYCL tCLSRY tARYCH tCLARX tARYCHL tARYLCL tINVCH tINVCL tCLTMV tRESIN tHVCL tRHDX tLOCK tCLHAV tCHCZ tCHCV tAVWL tAVRL CLKOUTA High Time CLKOUTA Rise Time CLKOUTA Fall Time SRDY Transition Setup Time SRDY Transition Hold Time ARDY Resolution Transition Setup Time ARDY Active Hold Time ARDY Inactive Holding Time ARDY Setup Time Peripheral Setup Time DRQ Setup Time RES Setup Time HOLD Setup
tCLDOX tCVCTX tWLWH tWHLH tWHDX tCKIN tCLCK tCHCK tCKHL tCKLH tCLCL
D
RD Inactive Delay
RD Inactive to ALE High Data Hold Time
RD Inactive to AD address Active Control Inactive Delay WR Pulse Width WR Inactive to ALE High Data Hold after WR WR Inactive to DEN Inactive X1 Period X1 Low Time X1 High Time X1 Fall Time X1 Rise Time CLKOUTA Period
R
A
T F
Timer Output Delay RD High to Data Hold on AD Bus Maximum PLL Lock Time HLDA Valid Delay Command Lines Float Delay A Address Valid to WR Low A Address Valid to RD Low CLKOUTA High to Address Valid X1 to CLKOUTA Skew X1 to CLKOUTB Skew CLKOUTA Low to SDEN Valid CLKOUTA Low to SCLK Low Data Valid to SCLK High SCLK High to SPI Data Hold SCLK Low to SPI Data Valid CLKOUTA High to RFSH Valid LCS Inactive Delay LCS Active Delay CLKOUTA High to RFSH Invalid CLKOUTA to CLKOUTB Skew LCS Precharge Pulse Width RFSH Cycle Time
Command Lines Valid Delay (after Float)
tCHCSV tCHAV tCICOA tCICOB tCLEV tCLSL tDVSH tSHDX tSLDV tCHRFD tCLCLX tCLCSL tCLRF
CLKOUTA High to LCS/UCS Valid
tWHDEX
tCOAOB tLRLL tRFCY tLCRF tAVBL
LCS Inactive to RFSH Active Delay A Address Valid to WHB, WLB Low
Notes: The following parameters are not defined or used at this time: 41, 56, 60, 73, 74, and 76.
Am186TMER and Am188TMER Microcontrollers Data Sheet
69
Switching Characteristics over Commercial and Industrial Operating Ranges Read Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Requirements 1 tDVCL Data in Setup 2 tCLDX Data in Hold(c) General Timing Responses 3 tCHSV Status Active Delay 4 tCLSH Status Inactive Delay 5 tCLAV AD Address Valid Delay 7 tCLDV Data Valid Delay 8 tCHDX Status Hold Time 9 tCHLH ALE Active Delay 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 59 66 67 68 tLHLL tCHLL tAVLL tLLAX tAVCH tCLAZ tCLCSV tCXCSX tCHCSX tDXDL tCVCTV tCVDEX tCHCTV tLHAV tAZRL tCLRL ALE Width ALE Inactive Delay AD Address Valid to ALE Low(a) Inactive(a) tCLCH tCHCL 0 tCLAX =0 0 tCLCH 0 0 0 0 0 20 20 AD Address Hold from ALE AD Address Float Delay MCS/PCS Active Delay MCS/PCS Hold from Command Inactive(a) MCS/PCS Inactive Delay DEN Inactive to DT/R Low(a) Control Active Delay DEN Inactive Delay Control Active Delay 1(b) 2(b) 25 MHz Min 10 3 0 0 0 0 0 tCLCL -10=30 20 20 20 20 20 20 tCLCL -10=20 tCLCH 0 0 Max 33 MHz Min 8 3 0 0 0 0 0 15 15 15 15 15 15 Max Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 15 15 ns ns ns ns ns ns ns 15 15 ns ns
AD Address Valid to Clock High
ALE High to Address Valid
Read Cycle Timing Responses
tRLRH tCLRH tRHAV tAVRL
tRHLH
tRHDX
D
AD Address Float to RD Active RD Active Delay RD Pulse Width RD Inactive Delay RD Inactive to ALE High(a) RD Inactive to AD Address A Address Valid to RD Low
R
Active(a) Bus(c)
A
15 0 0 2tCLCL -15=65 0 tCLCH -3 tCLCL -10=30 0 2tCLCL -15=65 0 0
20 20 20 20
T F
tCHCL tCLAX =0 15 15 tCLCH 0 0 0 0 0 10 0 15 15 15 15 0 2tCLCL -15=45 0 tCLCH -3 tCLCL -10=20 0 2tCLCL -15=45 0 0
20 20
RD High to Data Hold on AD
tCHCSV tCHAV
CLKOUTA High to LCS/UCS Valid CLKOUTA High to A Address Valid
20 20
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b c Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, INTA1-INTA0, WR, WHB, and WLB signals. If either spec 2 or spec 59 is met with respect to data hold time, the part will function correctly.
70
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges Read Cycle (40 MHz and 50 MHz)
Preliminary 40 MHz Min Max 5 2 0 0 0 0 0 tCLCL -5=20 12 Low(a) tCLCH tCHCL 0 tCLAX =0 0 12 12 12 12 12 12 12 15
Parameter No. Symbol Description General Timing Requirements 1 tDVCL Data in Setup 2 tCLDX Data in Hold(c) General Timing Responses 3 tCHSV Status Active Delay 4 tCLSH Status Inactive Delay 5 tCLAV AD Address Valid Delay 7 tCLDV Data Valid Delay 8 tCHDX Status Hold Time 9 tCHLH ALE Active Delay 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 59 66 67 68 tLHLL tCHLL tAVLL tLLAX tAVCH tCLAZ tCLCSV tCXCSX tCHCSX tDXDL tCVCTV tCVDEX tCHCTV tLHAV tAZRL ALE Width ALE Inactive Delay AD Address Valid to ALE AD Address Hold from ALE Inactive(a) AD Address Valid to Clock High AD Address Float Delay MCS/PCS Active Delay MCS/PCS Hold from Command Inactive(a) MCS/PCS Inactive Delay DEN Inactive to DT/R Control Active Delay DEN Inactive Delay Control Active Delay Low(a)
50 MHz Min 5 2 0 0 0 0 0
Max
Unit ns ns
10 10 10 10 10 10
ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
ALE High to Address Valid
Read Cycle Timing Responses tCLRL
tRLRH tCLRH tRHLH tRHAV
D
AD Address Float to RD Active RD Active Delay RD Pulse Width
R
1(b) 2(b) High(a)
A
tCLCH 0 0 0 0 0 7.5 0 0 2tCLCL -10=40 0 tCLCH -2 tCLCL -5=20 0 2 * tCLCL -10=40 0 0
12 12 14 12
T F
tCLCH tCHCL 0 0 0 10 10 tCLCH 0 0 0 0 0 5 0 10 10 14 10 0 35 0 tCLCH -2 15 0 2 * tCLCL -10=30 0 0 10 10 ns ns ns ns ns ns ns 10 10 ns ns
10 12
RD Inactive Delay RD Inactive to ALE RD Inactive to AD Address Active(a) RD High to Data Hold on AD Bus(c) A Address Valid to RD Low CLKOUTA High to LCS/UCS Valid CLKOUTA High to A Address Valid
tRHDX tAVRL tCHCSV tCHAV
12 10
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b c Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, INTA1-INTA0, WR, WHB, and WLB signals. If either specification 2 or specification 59 is met with respect to data hold time, the part will function correctly.
Am186TMER and Am188TMER Microcontrollers Data Sheet
71
Read Cycle Waveforms
t1 t2 t3 tW CLKOUTA
66
t4
A19-A0
68
Address
8
S6
S6
14 7 1
S6
AD15-AD0*, AD7-AD0**
Address
Data
2
AO15-AO8**
23 9 11 15 10 24
Address
ALE
RD
5
12
26
BHE*
67
LCS, UCS MCS1-MCS0, PCS6-PCS5, PCS3-PCS0 DEN
DT/R
S2-S0
D
22 3
19
R
16
A
25
BHE
13
T F
29 59 28 27 4 18 17 21 22
20
4
Status
7
UZI
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
72
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges Write Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses 3 tCHSV Status Active Delay 4 tCLSH Status Inactive Delay 5 tCLAV AD Address Valid Delay 7 tCLDV Data Valid Delay 8 tCHDX Status Hold Time 9 tCHLH ALE Active Delay 10 11 12 13 14 16 17 18 19 20 23 30 31 32 33 34 35 65 67 68 87 tLHLL tCHLL tAVLL tLLAX tAVCH tCLCSV tCXCSX tCHCSX tDXDL tCVCTV tLHAV tCLDOX tCVCTX tWLWH tWHLH tWHDX tAVWL tCHAV tAVBL ALE Width ALE Inactive Delay AD Address Valid to ALE AD Address Hold Low(a) tCLCH tCHCL 0 0 tCLCH 0 0 0 20 20 20 from ALE Inactive(a) 25 MHz Min 0 0 0 0 0 tCLCL -10=30 20 tCLCH tCHCL 0 0 Max 20 20 20 20 20 tCLCL -10=20 15 33 MHz Min 0 0 0 0 0 Max 15 15 15 15 15 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 15 15 15 ns ns ns
AD Address Valid to Clock High MCS/PCS Active Delay MCS/PCS Hold from Command Inactive(a) MCS/PCS Inactive Delay DEN Inactive to DT/R Control Active Delay Low(a) 1(b)
ALE High to Address Valid Data Hold Time Control Inactive Delay(b) WR Pulse Width WR Inactive to ALE
Write Cycle Timing Responses
High(a)
Data Hold after WR(a)
tWHDEX WR Inactive to DEN tCHCSV
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, INTA1-INTA0, WR, WHB, and WLB signals.
D
A Address Valid to WR Low
CLKOUTA High to LCS/UCS Valid
CLKOUTA High to A Address Valid
R
Inactive(a)
2tCLCL -10=70 tCLCH -2 tCLCH -3 tCLCL -10=30
A
15 0 0 0 0 tCHCL -3
T F
15 tCLCH 0 0 0 15 15 10 0 0 2tCLCL -10=50 tCLCH -2 tCLCL -10=20 tCLCH -5 tCLCL +tCHCL -3 15 0 0 tCHCL -3
20
tCLCL +tCHCL -3 20 20 20
A Address Valid to WHB, WLB Low
Am186TMER and Am188TMER Microcontrollers Data Sheet
73
Switching Characteristics over Commercial and Industrial Operating Ranges Write Cycle (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses 3 tCHSV Status Active Delay 4 tCLSH Status Inactive Delay 5 tCLAV AD Address Valid Delay 7 tCLDV Data Valid Delay 8 tCHDX Status Hold Time 9 tCHLH ALE Active Delay 10 11 12 13 14 16 17 18 19 20 23 30 31 32 33 34 35 65 67 68 87 tLHLL tCHLL tAVLL tLLAX tAVCH tCLCSV tCXCSX tCHCSX tDXDL tCVCTV tLHAV tCLDOX tCVCTX tWLWH tWHLH tWHDX tWHDEX tAVWL tCHAV tAVBL tCHCSV ALE Width ALE Inactive Delay AD Address Valid to ALE Low(a) Inactive(a) tCLCH tCHCL 0 0 tCLCH 0 0 12 12 12 AD Address Hold from ALE MCS/PCS Active Delay MCS/PCS Hold from Command Inactive(a) MCS/PCS Inactive Delay DEN Inactive to DT/R Control Active Delay Low(a) 1(b) 40 MHz Min 0 0 0 0 0 tCLCL -5=20 12 tCLCH 0 0 tCHCL Max 12 12 12 12 12 15 10 50 MHz Min 0 0 0 0 0 Max 10 10 10 10 10 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 10 10 10 ns ns ns
AD Address Valid to Clock High
ALE High to Address Valid Data Hold Time Control Inactive Delay(b) WR Pulse Width
Write Cycle Timing Responses
WR Inactive to ALE
Data Hold after WR(a) WR Inactive to DEN
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, INTA1-INTA0, WR, WHB, and WLB signals.
D
A Address Valid to WR Low
CLKOUTA High to LCS/UCS Valid
CLKOUTA High to A Address Valid
R
High(a) Inactive(a)
A
0 7.5 0 0 2tCLCL -10=40 tCLCH -2 tCLCH tCLCL+tCHCL-1.25 0 0 tCHCL -1.25 tCLCL -10=15
T F
10 tCLCH 0 0 0 5 0 0 35 tCLCH -2 12 tCLCH tCLCL+tCHCL-1.25 10 10 10 0 0 tCHCL -1.25
12
12 10 12
A Address Valid to WHB, WLB Low
74
Am186TMER and Am188TMER Microcontrollers Data Sheet
Write Cycle Waveforms
t1 t2 t3 tW CLKOUTA
65
t4
A19-A0
68
Address
8
S6
S6
14 7
S6
30
AD15-AD0*, AD7-AD0** AO15-AO8**
23 9
Address
Data
Address
11 13 10
ALE
WR
20
32 12 20
WHB*, WLB WB
5
87
BHE*
67
LCS, UCS MCS3-MCS0, PCS6-PCS5, PCS3-PCS0 DEN
16
DT/R
S2-S0
D
3
R
A
BHE Status
7
T F
34 31 33 31 4 18 17 35 31 19 4
UZI
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
Am186TMER and Am188TMER Microcontrollers Data Sheet
75
Switching Characteristics over Commercial and Industrial Operating Ranges Internal RAM Show Read Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCLAV 5 AD Address Valid Delay 7 9 11 tCLDV tCHLH tCHLL Data Valid Delay ALE Active Delay ALE Inactive Delay 0 0 0 25 MHz Min 0 0 Max 20 20 20 20 20 20 20 0 0 0 33 MHz Min 0 0 Max 15 15 15 15 15 15 15 Unit ns ns ns ns ns ns ns
Read Cycle Timing Responses tCLRL 25 RD Active Delay 27 68 tCLRH tCHAV RD Inactive Delay CLKOUTA High to A Address Valid
Switching Characteristics over Commercial and Industrial Operating Ranges Internal RAM Show Read Cycle (40 MHz and 50 MHz)
Parameter No. Symbol Description General Timing Responses tCLAV 5 AD Address Valid Delay 7 9 11 tCLDV tCHLH tCHLL Data Valid Delay ALE Active Delay ALE Inactive Delay 40 MHz Min Preliminary Max 12 12 12 12 10 12 10
Read Cycle Timing Responses tCLRL 25 RD Active Delay 27 68 tCLRH tCHAV
RD Inactive Delay
CLKOUTA High to A Address Valid
D
76
R
A
0 0 0 0
0
T F
50 MHz Min Max 0 0 10 10 10 10 10 10 10 Unit ns ns ns ns ns ns ns 0 0 0
Am186TMER and Am188TMER Microcontrollers Data Sheet
Internal RAM Show Read Cycle Waveform
t1 t2 t3 t4
CLKOUTA
68 68
A19-A0
Address
AD15-AD0
5
Address
7
Data
5
ALE
9 11
RD LCS, UCS MCS3-MCS0, PCS6-PCS5, PCS3-PCS0
25
D
R
A
T F
27
Am186TMER and Am188TMER Microcontrollers Data Sheet
77
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Read Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Requirements tDVCL 1 Data in Setup 2 tCLDX Data in Hold(b) General Timing Responses tCLAV 5 AD Address Valid Delay 7 8 9 10 11 23 80 81 84 tCLDV tCHDX tCHLH tLHLL tCHLL tLHAV tCLCLX tCLCSL tLRLL Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay ALE High to Address Valid LCS Inactive Delay LCS Active Delay LCS Precharge Pulse Width 15 0 0 tCLCL + tCLCH -3 0 2tCLCL -15=65 0 0 0 High(a) tCLCH -3 20 20 tCLCL -10=30 20 25 MHz Min 10 3 0 0 0 20 tCLCL -10=20 15 15 15 10 0 0 20 20 Max 33 MHz Min 8 3 0 0 0 15 15 15 Max Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 15 ns
Read Cycle Timing Responses tAZRL 24 AD Address Float to RD Active 25 26 27 28 59 66 68 tCLRL tRLRH tCLRH tRHLH tRHDX tAVRL tCHAV RD Active Delay RD Pulse Width RD Inactive Delay RD Inactive to ALE RD High to Data Hold on AD Bus(b) A Address Valid to RD Low CLKOUTA High to A Address Valid
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. If either spec 2 or spec 59 is met with respect to data hold time, the part will function correctly.
D
R
2tCLCL -15=65
A
0
20 20
T F
tCLCL + tCLCH -3 0 0 0 0 2tCLCL -15=45 0 15 15 2tCLCL -15=45 tCLCH -3
20
78
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Read Cycle (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description General Timing Requirements tDVCL 1 Data in Setup 2 tCLDX Data in Hold(b) General Timing Responses tCLAV 5 AD Address Valid Delay 7 8 9 10 11 23 80 81 84 tCLDV tCHDX tCHLH tLHLL tCHLL tLHAV tCLCLX tCLCSL tLRLL Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay ALE High to Address Valid LCS Inactive Delay LCS Active Delay LCS Precharge Pulse Width 7.5 0 0 tCLCL + tCLCH -1.25 0 2tCLCL -10=40 0 0 0 High(a) tCLCH -1.25 12 12 tCLCL -5=20 12 40 MHz Min 5 2 0 0 0 12 15 10 10 10 5 0 0 12 12 Max 50 MHz Min 5 2 0 0 0 10 10 10 Max Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 10 ns
Read Cycle Timing Responses tAZRL 24 AD Address Float to RD Active 25 26 27 28 59 66 68 tCLRL tRLRH tCLRH tRHLH tRHDX tAVRL tCHAV RD Active Delay RD Pulse Width RD Inactive Delay RD Inactive to ALE RD High to Data Hold on AD Bus(b) A Address Valid to RD Low CLKOUTA High to A Address Valid
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. If either specification 2 or specification 59 is met with respect to data hold time, the part will function correctly.
D
R
2tCLCL -10=40
A
0
10 12
T F
tCLCL + tCLCH -1 0 0 0 0 2tCLCL -10=30 10 10 35 tCLCH -1 0
10
Am186TMER and Am188TMER Microcontrollers Data Sheet
79
PSRAM Read Cycle Waveforms
t1 t2 t3 t4 t1
tW CLKOUTA
66
A19-A0
68
Address
8
S6
S6
7 1
S6
AD15-AD0*, AD7-AD0**
Address
Data
2
Address
AO15-AO8**
23 9 11
Address
ALE
10 24
RD
27 5
LCS
80 84 81
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
D
R
A
25
26
T F
59 28 27 80
80
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Write Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCLAV AD Address Valid Delay 5 7 8 9 10 11 23 20 80 81 84 tCLDV tCHDX tCHLH tLHLL tCHLL tLHAV tCVCTV tCLCLX tCLCSL tLRLL Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay ALE High to Address Valid Control Active Delay 1(b) LCS Inactive Delay LCS Active Delay LCS Precharge Pulse Width 15 0 0 0 tCLCL + tCLCH -3 0 0 2tCLCL -10=70 High(a) tCLCH -2 tCLCL -10=30 20 20 20 20 tCLCL -10=30 20 0 10 0 0 25 MHz Min 0 0 0 20 tCLCL -10=20 15 15 15 15 Max 20 20 33 MHz Min 0 0 0 15 Max 15 15 Unit ns ns ns ns ns ns ns ns ns ns
Write Cycle Timing Responses tCLDOX Data Hold Time 30 31 32 33 34 65 68 87 tCVCTX tWLWH tWHLH tWHDX tAVWL tCHAV tAVBL Control Inactive Delay(b) WR Pulse Width WR Inactive to ALE Data Hold after WR(a)
A Address Valid to WR Low CLKOUTA High to A Address Valid A Address Valid to WHB, WLB Low
tCLCL +tCHCL -3 0
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, WR, WHB and WLB signals.
D
R
tCHCL -3
A
T F
tCLCL + tCLCH -3 0 0 ns ns ns ns ns ns ns ns 15 2tCLCL -10=50 tCLCH -2 tCLCL -10=20 tCLCL +tCHCL -3 0 tCHCL -3 15 15
20 20
Am186TMER and Am188TMER Microcontrollers Data Sheet
81
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Write Cycle (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCLAV 5 AD Address Valid Delay 7 8 9 10 11 20 23 80 81 84 tCLDV tCHDX tCHLH tLHLL tCHLL tCVCTV tLHAV tCLCLX tCLCSL tLRLL Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay Control Active Delay LCS Inactive Delay LCS Active Delay LCS Precharge Pulse Width 1(b) 0 7.5 0 0 tCLCL + tCLCH -1.25 0 0 2tCLCL -10=40 High(a) tCLCH -2 tCLCL -10=15 0 12 12 12 ALE High to Address Valid tCLCL -5=20 12 12 0 5 0 0 40 MHz Min 0 0 0 12 15 10 10 10 10 Max 12 12 50 MHz Min 0 0 0 10 Max 10 10 Unit ns ns ns ns ns ns ns ns ns ns
tCLCL + tCLCH -1 0 0
Write Cycle Timing Responses tCLDOX Data Hold Time 30 31 32 33 34 65 68 87 tCVCTX tWLWH tWHLH tWHDX tAVWL tCHAV tAVBL Control Inactive Delay(b) WR Pulse Width WR Inactive to ALE Data Hold after WR(a)
A Address Valid to WR Low CLKOUTA High to A Address Valid A Address Valid to WHB, WLB Low
tCLCL +tCHCL-1.25 tCHCL -1.25
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN, WR, WHB and WLB signals.
D
R
A
tCLCL+tCHCL-1.25 0 tCHCL -1.25
10 18
T F
ns ns ns ns ns ns ns ns 10 35 12 tCLCH -2 10 15
82
Am186TMER and Am188TMER Microcontrollers Data Sheet
PSRAM Write Cycle Waveforms
t1 t2 t3 tW CLKOUTA
65
t4
t1
A19-A0
68
Address
8
S6
S6
7
S6
30
AD15-AD0*, AD7-AD0**
Data
Address
Data
AO15-AO8**
23 9 11
Address
ALE
10 32
WR
31 5 20
WHB*, WLB* WB** LCS
87
80
84
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
D
R
81
A
20
T F
34 33 31 80
Am186TMER and Am188TMER Microcontrollers Data Sheet
83
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Refresh Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCHLH 9 ALE Active Delay 10 11 tLHLL tCHLL ALE Width ALE Inactive Delay 0 2tCLCL -15=65 0 High(a) tCLCH -3 0 0 0 0 6 x tCLCL 2tCLCL -3 20 20 20 20 20 25 MHz Min Max 20 tCLCL -10=30 20 20 0 2tCLCL -15=45 0 tCLCH -3 0 0 0 0 15 15 15 15 15 tCLCL -10=20 15 15 33 MHz Min Max 15 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns
Read/Write Cycle Timing Responses tCLRL 25 RD Active Delay 26 27 28 80 81 tRLRH tCLRH tRHLH tCLCLX tCLCSL RD Pulse Width RD Inactive Delay RD Inactive to ALE LCS Inactive Delay LCS Active Delay
Refresh Timing Cycle Parameters tCLRFD CLKOUTA Low to RFSH Valid 79 82 85 86 tCLRF tRFCY tLCRF CLKOUTA High to RFSH Invalid RFSH Cycle Time LCS Inactive to RFSH Active Delay
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a Testing is performed with equal loading on referenced pins.
D
84
R
A
T F
6 x tCLCL 2tCLCL -3
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges PSRAM Refresh Cycle (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCHLH 9 ALE Active Delay 10 11 tLHLL tCHLL ALE Width ALE Inactive Delay 0 2tCLCL -10=40 0 High(a) tCLCH -2 0 0 0 0 6 x tCLCL 2tCLCL -1.25 12 12 12 12 12 40 MHz Min Max 12 tCLCL -5=20 12 10 0 35 0 tCLCH -2 0 0 0 0 10 10 10 10 10 15 10 10 50 MHz Min Max 10 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns
Read/Write Cycle Timing Responses tCLRL 25 RD Active Delay 26 27 28 80 81 tRLRH tCLRH tRHLH tCLCLX tCLCSL RD Pulse Width RD Inactive Delay RD Inactive to ALE LCS Inactive Delay LCS Active Delay
Refresh Timing Cycle Parameters tCLRFD CLKOUTA Low to RFSH Valid 79 82 85 86 tCLRF tRFCY tLCRF CLKOUTA High to RFSH Invalid RFSH Cycle Time LCS Inactive to RFSH Active Delay
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a Testing is performed with equal loading on referenced pins.
D
R
A
T F
6 x tCLCL 2tCLCL -1.25
Am186TMER and Am188TMER Microcontrollers Data Sheet
85
PSRAM Refresh Cycle Waveforms
t1 t2 t3 tW * CLKOUTA t4 t1
A19-A0
9 11
Address
ALE
27 10 26 80 25 28
RD
LCS RFSH
79 82
85 86
Note: * The period tw is fixed at three wait states for PSRAM auto refresh only.
D
86
R
A
T F
27
81
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges Interrupt Acknowledge Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Requirements tDVCL 1 Data in Setup 2 tCLDX Data in Hold General Timing Responses tCHSV 3 Status Active Delay 4 7 8 9 10 11 12 15 19 20 21 22 23 31 68 tCLSH tCLDV tCHDX tCHLH tLHLL tCHLL tAVLL tCLAZ tDXDL tCVCTV tCVDEX tCHCTV tLHAV tCVCTX tCHAV Status Inactive Delay Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay AD Address Invalid to ALE Low(a) AD Address Float Delay DEN Inactive to DT/R Control Active Delay DEN Inactive Delay Control Active Delay Control Inactive 2(c) ALE High to Address Valid Delay(b) CLKOUTA High to A Address Valid Low(a) 1(b) tCLCH tCLAX =0 0 0 0 0 0 0 15 20 20 20 20 20 20 tCLCL -10=30 20 25 MHz Min 10 3 0 0 0 0 20 tCLCL -10=20 tCLCH 0 0 0 0 0 0 20 20 20 Max 33 MHz Min 8 3 0 0 0 0 15 15 15 15 15 15 15 15 15 15 15 Max Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b c Testing is performed with equal loading on referenced pins. This parameter applies to the INTA1-INTA0 signals. This parameter applies to the DEN and DT/R signals.
D
R
A
T F
tCLAX =0 10
Am186TMER and Am188TMER Microcontrollers Data Sheet
87
Switching Characteristics over Commercial Operating Ranges Interrupt Acknowledge Cycle (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description General Timing Requirements tDVCL 1 Data in Setup 2 tCLDX Data in Hold General Timing Responses tCHSV 3 Status Active Delay 4 7 8 9 10 11 12 15 19 20 21 22 23 31 68 tCLSH tCLDV tCHDX tCHLH tLHLL tCHLL tAVLL tCLAZ tDXDL tCVCTV tCVDEX tCHCTV tLHAV tCVCTX tCHAV Status Inactive Delay Data Valid Delay Status Hold Time ALE Active Delay ALE Width ALE Inactive Delay AD Address Invalid to ALE AD Address Float Delay DEN Inactive to DT/R DEN Inactive Delay Control Active Delay 2(c) ALE High to Address Valid Control Inactive Delay(b) CLKOUTA High to A Address Valid Low(a) Control Active Delay 1(b) Low(a) tCLCH tCLAX =0 0 0 0 0 0 0 7.5 12 14 12 12 10 12 tCLCL -5=20 12 40 MHz Min 5 2 0 0 0 0 12 15 12 12 12 Max 50 MHz Min 5 2 0 0 0 0 10 12 10 10 14 10 10 10 10 10 10 Max Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b c Testing is performed with equal loading on referenced pins. This parameter applies to the INTA1-INTA0 signals. This parameter applies to the DEN and DT/R signals.
D
R
A
T F
tCLCH 0 0 0 0 0 5 0 0
88
Am186TMER and Am188TMER Microcontrollers Data Sheet
Interrupt Acknowledge Cycle Waveforms
t1 t2 t3 tW CLKOUTA
68
t4
A19-A0
7
Address
8
S6 AD15-AD0*, AD7-AD0**
S6
1 12
S6
2 (b)
Ptr
15
AO15-AO8**
9
Address
23 10 11
ALE
BHE*
BHE
INTA1-INTA0
20
DEN
22
DT/R
S2-S0
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
a The status bits become inactive in the state preceding t4. b The data hold time lasts only until the interrupt acknowledge signal deasserts, even if the interrupt acknowledge transition occurs prior to tCLDX (min). c This parameter applies to an interrupt acknowledge cycle that follows a write cycle. d If followed by a write cycle, this change occurs in the state preceding that write cycle.
D
R
3
19 (c)
A
Status
T F
4 31 21 4 (a) 22 (d)
22
Am186TMER and Am188TMER Microcontrollers Data Sheet
89
Switching Characteristics over Commercial and Industrial Operating Ranges Software Halt Cycle (25 MHz and 33 MHz)
Preliminary Parameter No. Symbol Description General Timing Responses tCHSV 3 Status Active Delay 4 5 9 10 11 19 22 68 tCLSH tCLAV tCHLH tLHLL tCHLL tDXDL tCHCTV tCHAV Status Inactive Delay AD Address Invalid Delay ALE Active Delay ALE Width ALE Inactive Delay DEN Inactive to DT/R Low(a) 0 0 0 20 20 Control Active Delay 2(b) CLKOUTA High to A Address Invalid tCLCL -10=30 20 0 0 0 15 15 25 MHz Min 0 0 0 Max 20 20 20 20 tCLCL -10=20 15 33 MHz Min 0 0 0 Max 15 15 15 15 Unit ns ns ns ns ns ns ns ns ns
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN signal.
Switching Characteristics over Commercial and Industrial Operating Ranges Software Halt Cycle (40 MHz and 50 MHz)
Parameter No. Symbol Description General Timing Responses tCHSV 3 Status Active Delay 4 5 9 10 11 19 22 68 tCLSH tCLAV tLHLL tCHLH tCHLL
Status Inactive Delay ALE Active Delay ALE Width
tDXDL
tCHCTV tCHAV
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b Testing is performed with equal loading on referenced pins. This parameter applies to the DEN signal.
D
AD Address Invalid Delay
ALE Inactive Delay
R
(b)
A
40 MHz Min 0 0 0 0 0 0
Preliminary
T F
50 MHz Min 0 0 0 15 Max 10 10 10 10 10 0 0 0 10 10 Unit ns ns ns ns ns ns ns ns ns
Max 12 12 12 12
tCLCL -5=20 12 12 10
DEN Inactive to DT/R Low(a) Control Active Delay 2 CLKOUTA High to A Address Invalid
90
Am186TMER and Am188TMER Microcontrollers Data Sheet
Software Halt Cycle Waveforms
t1 t2 ti ti
CLKOUTA
68
A19-A0
5
Invalid Address
S6, AD15-AD0*, AD7-AD0**, AO15-AO8** ALE
9
Invalid Address
10
11
DEN
19
DT/R
22 4
S2-S0
3
Status
Notes:
* **
Am186ER microcontroller only Am188ER microcontroller only
D
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
91
Switching Characteristics over Commercial and Industrial Operating Ranges Clock (25 MHz)
Preliminary 25 MHz Min 40 15 15 5 5 20 10 10 V)(a) 40 5 5 33 V)(a)
Parameter No. Symbol Description CLKIN Requirements for Times One Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
Max 60
Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5
CLKIN Requirements for Divide by Two Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5 CLKOUTA Period CLKOUTA Low Time (CL =50 pF) CLKOUTA High Time (CL =50 pF) CLKOUTA Rise Time (1.0 to 3.5 V) CLKOUTA Fall Time (3.5 to 1.0 V) Maximum PLL Lock Time X1 to CLKOUTA Skew X1 to CLKOUTB Skew
CLKOUT Timing tCLCL 42 43 44 45 46 61 69 70 tCLCH tCHCL tCH1CH2 tCL2CL1 tLOCK tCICOA tCICOB
0.5tCLCL -2=18 0.5tCLCL -2=18
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a The specifications for CLKIN are applicable to the Divide by Two and Times One modes. The Times One mode should be used for operations from 16 MHz to 20 MHz. The Times Four mode should be used for operations above 20 MHz.
D
R
A
T F
3 3 1 ms 20 34
92
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges Clock (33 MHz)
Preliminary 33 MHz Min 120 55 55 5 5 30 10 10 V)(a) 15 2.5 2.5 V)(a) 5 5 60 V)(a)
Parameter No. Symbol Description CLKIN Requirements for Times Four Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
Max 125
Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5
CLKIN Requirements for Times One Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5
CLKIN Requirements for Divide by Two Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5 CLKOUTA Period CLKOUTA Low Time (CL =50 pF) CLKOUTA High Time (CL =50 pF) CLKOUTA Rise Time (1.0 to 3.5 V) CLKOUTA Fall Time (3.5 to 1.0 V) Maximum PLL Lock Time X1 to CLKOUTA Skew X1 to CLKOUTB Skew
CLKOUT Timing tCLCL 42 43 44 45 46 61 69 70 tCLCH tCHCL tCH1CH2 tCL2CL1 tLOCK tCICOA
tCICOB
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a The Times One mode should be used for operations from 16 MHz to 20 MHz. The Times Four mode should be used for operations above 20 MHz.
D
R
A
30
T F
33 5 5 3 3 1 20 26 ns ns ms ns ns
0.5tCLCL -1.5=13.5 0.5tCLCL -1.5=13.5
Am186TMER and Am188TMER Microcontrollers Data Sheet
93
Switching Characteristics over Commercial and Industrial Operating Ranges Clock (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description CLKIN Requirements for Times Four Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a) V)(a) 25 7.5 7.5 5 5 12.5 1.25 1.25 V)(a) 33 V)(a) 40 MHz Min 100 45 45 5 5 60 Max 125 50 MHz Min 80 35 35 5 5 Max 125 Unit ns ns ns ns ns ns ns
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5
CLKIN Requirements for Times One Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5
CLKIN Requirements for Divide by Two Mode tCKIN 36 X1 Period(a) 37 38 39 40 tCLCK tCHCK tCKHL tCKLH X1 Low Time (1.5 X1 High Time (1.5 V)(a) V)(a)
X1 Fall Time (3.5 to 1.0 V)(a) X1 Rise Time (1.0 to 3.5 CLKOUTA Period CLKOUTA Low Time (CL =50 pF) CLKOUTA High Time (CL =50 pF)
CLKOUT Timing tCLCL 42 43 44 45 46 61 69 70 tCLCH tCHCL tCH1CH2 tCL2CL1 tLOCK tCICOA
CLKOUTA Rise Time (1.0 to 3.5 V) CLKOUTA Fall Time (3.5 to 1.0 V) Maximum PLL Lock Time X1 to CLKOUTA Skew X1 to CLKOUTB Skew
tCICOB
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a The Times One mode should be used for operations from 16 MHz to 20 MHz. The Times Four mode should be used for operations above 20 MHz.
D
R
0.5tCLCL-1.25=11.25 0.5tCLCL-1.25=11.25
A
25
5 5
T F
Not Supported Not Supported 20 0.5tCLCL -1=9 0.5tCLCL -1=9 3 3 1 15 21
ns ns ns ns ns ns ns ns ns ns ns ns ns ms ns ns
3 3 1 20 24
94
Am186TMER and Am188TMER Microcontrollers Data Sheet
Clock Waveforms--Active Mode
X2
36 37 38
X1
40 39 46 45
CLKOUTA (Divide by one)
69 42 44 43
CLKOUTB
70
Clock Waveforms--Power-Save Mode
X2
X1
CLKOUTA (Divide by four) CLKOUTB *
CLKOUTB **
Notes:
*
The CLKOUTB Output Frequency (CBF) bit in the Power Save Control Register (PDCON) is set to 1.
** The CLKOUTB Output Frequency (CBF) bit in the Power Save Control Register (PDCON) is cleared to 0.
D
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
95
Switching Characteristics over Commercial and Industrial Operating Ranges Ready and Peripheral Timing (25 MHz and 33 MHz)
Preliminary 25 MHz 33 MHz Min Max Min Max 10 3 10 4 4 15 10 10 20 8 3 8 4 4 10 8 8
Parameter No. Symbol Description Ready and Peripheral Timing Requirements tSRYCL 47 SRDY Transition Setup Time(a) 48 49 50 51 52 53 54 tCLSRY tARYCH tCLARX tARYCHL tARYLCL tINVCH tINVCL SRDY Transition Hold Time(a) ARDY Resolution Transition Setup Time(b) ARDY Active Hold Time(a) ARDY Inactive Holding Time ARDY Setup Time(a) Time(b) Peripheral Setup
Unit ns ns ns ns ns ns ns ns ns
DRQ Setup Time(b)
Peripheral Timing Responses tCLTMV 55 Timer Output Delay
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b This timing must be met to guarantee proper operation. This timing must be met to guarantee recognition at the clock edge.
Switching Characteristics over Commercial and Industrial Operating Ranges Ready and Peripheral Timing (40 MHz and 50 MHz)
Parameter No. Symbol Description Ready and Peripheral Timing Requirements tSRYCL SRDY Transition Setup Time(a) 47 48 49 50 51 52 53 54 tCLSRY tARYCH tCLARX
tARYCHL tARYLCL tINVCH tINVCL
Peripheral Timing Responses tCLTMV Timer Output Delay 55
D
SRDY Transition Hold
ARDY Resolution Transition Setup ARDY Active Hold Time(a) ARDY Setup Time(a) Time(b) ARDY Inactive Holding Time Peripheral Setup
R
Time(a)
A
5 2 5 3 5 5 5 5
Preliminary 40 MHz 50 MHz Min Max Min Max 5 2 5 3 5 5 5 5 12 10
T F
15 Unit ns ns ns ns ns ns ns ns ns
Time(b)
DRQ Setup Time(b)
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a b This timing must be met to guarantee proper operation. This timing must be met to guarantee recognition at the clock edge.
96
Am186TMER and Am188TMER Microcontrollers Data Sheet
Synchronous Ready Waveforms
Case 11 Case 21 Case 31 Case 41 Case 52 tW t3 t2 t1 t1 tW tW t3 t2 t2 tW tW tW t3 t3 t4 t4 t4 t4 tw t4
CLKOUTA
47
SRDY (Normally NotReady System)
48
SRDY (Normally Ready System)
Notes: 1. Normally not-ready system. 2. Normally ready system.
Asynchronous Ready Waveforms
Case 11 Case 21 Case 31 Case 41 tW t3 t2 t1
Case 52
CLKOUTA
ARDY (Normally Not-Ready System)
ARDY (Normally Ready System)
D
R
t1
A
tW tW t3 t2 t2
49 49 51 52
T F
tW tW tW t3 t3 t4 t4 t4 t4 tw t4
50 50
Notes: 1. Normally not-ready system. 2. Normally ready system.
Am186TMER and Am188TMER Microcontrollers Data Sheet
97
Peripheral Waveforms
CLKOUTA
53
INT4-INT0, NMI, TMRIN1-TMRIN0
54
DRQ1-DRQ0
55
TMROUT1- TMROUT0
D
98
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
Switching Characteristics over Commercial and Industrial Operating Ranges Reset and Bus Hold (25 MHz and 33 MHz)
Preliminary 25 MHz 33 MHz Min Max Min Max 0 0 10 10 0 20 20 20 20 20 0 0 8 8 0 15 15 15 15 15
Parameter No. Symbol Description Reset and Bus Hold Timing Requirements tCLAV 5 AD Address Valid Delay 15 57 58 tCLAZ tRESIN tHVCL AD Address Float Delay RES Setup Time HOLD Setup(a)
Unit ns ns ns ns ns ns ns
Reset and Bus Hold Timing Responses tCLHAV 62 HLDA Valid Delay 63 64 tCHCZ tCHCV Command Lines Float Delay Command Lines Valid Delay (after Float)
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a This timing must be met to guarantee recognition at the next clock.
Switching Characteristics over Commercial and Industrial Operating Ranges Reset and Bus Hold (40 MHz and 50 MHz)
Parameter No. Symbol Description Reset and Bus Hold Timing Requirements tCLAV 5 AD Address Valid Delay 15 57 58 62 63 64 tCLAZ tRESIN tHVCL tCLHAV tCHCZ tCHCV AD Address Float Delay RES Setup Time HOLD Setup(a)
Reset and Bus Hold Timing Responses
Notes: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V. a This timing must be met to guarantee recognition at the next clock.
D
HLDA Valid Delay
Command Lines Float Delay
Command Lines Valid Delay (after Float)
R
A
0 0 5 5 0
Preliminary 40 MHz 50 MHz Min Max Min Max 12 12 0 0 5 5 12 12 12 0 10 10 10 10 10
T F
Unit ns ns ns ns ns ns ns
Am186TMER and Am188TMER Microcontrollers Data Sheet
99
Reset Waveforms
X1
57 57
RES
CLKOUTA
Note: RES must be held Low for 1 ms during power-up to ensure proper device initialization. Activating the PLL will require 1 ms to achieve a stable clock.
Signals Related to Reset Waveforms
RES
CLKOUTA BHE/ADEN*, RFSH2/ADEN*, S6/CLKSEL1* **, UZI/CLKSEL2** S1/IMDIS*, and S0/SREN* AD15-AD0 (186) AO15-AO8, AD7-AD0 (188) S6/CLKSEL1***, UZI/CLKSEL2***
Divide by Two and Times One Modes
Notes:
* Because BHE, RFSH2, S6, UZI, S1, and S0 are not driven for 6.5 clocks after reset, their alternate functions can be asserted with external pulldown resistors. ** In Divide by Two mode and Times One mode, S6/CLKSEL1 and UZI/CLKSEL2 must be held for 3 clock cycles after reset negates. ***In Times Four mode, S6/CLKSEL1 and UZI/CLKSEL2 must be held for 5 clock cycles after reset negates.
D
Times Four Mode
R
Three-State
A
Three-State
T F
Three-State
100
Am186TMER and Am188TMER Microcontrollers Data Sheet
Bus Hold Waveforms--Entering
Case 1 Case 2 ti t4 ti ti ti ti
CLKOUTA
58
HOLD
62
HLDA
15
AD15-AD0, DEN A19-A0, S6, RD, WR, BHE, DT/R, S2-S0 WHB, WLB
63
Bus Hold Waveforms--Leaving
Case 1 Case 2 ti ti
CLKOUTA
HOLD
HLDA
AD15-AD0, DEN A19-A0, S6, RD, WR, BHE, DT/R, S2-S0 WHB, WLB
D
R
58
A
ti ti
62
T F
ti t1 t1 t4
5 64
Am186TMER and Am188TMER Microcontrollers Data Sheet
101
Switching Characteristics over Commercial and Industrial Operating Ranges Synchronous Serial Interface (SSI) (25 MHz and 33 MHz)
Preliminary 25 MHz 33 MHz Min Max Min Max 10 3 8 2
Parameter No. Symbol Description Synchronous Serial Port Timing Requirements tDVSH 75 Data Valid to SCLK High 77 tSHDX SCLK High to SPI Data Hold Synchronous Serial Port Timing Responses CLKOUTA Low to 71 tCLEV SDEN1 or SDEN0 Valid 72 78 tCLSL tSLDV CLKOUTA Low to SCLK Low SCLK Low to Data Valid
Unit ns ns
20 20 20
0 0 0
15 15 15
ns ns ns
Note: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V.
Switching Characteristics over Commercial and Industrial Operating Ranges Synchronous Serial Interface (SSI) (40 MHz and 50 MHz)
Preliminary Parameter No. Symbol Description Synchronous Serial Port Timing Requirements tDVSH 75 Data Valid to SCLK High 77 tSHDX SCLK High to SPI Data Hold Synchronous Serial Port Timing Responses CLKOUTA Low to tCLEV 71 SDEN1 or SDEN0 Valid tCLSL 72 CLKOUTA Low to SCLK Low 78 tSLDV
Note: All timing parameters are measured at VCC /2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL =0.3 V and VIH =VCC -0.3 V.
D
SCLK Low to Data Valid
R
A
5 2 0 0 0
40 MHz Min Max
T F
50 MHz Min Max 5 2 Unit ns ns 0 0 0 10 10 10 ns ns ns
12 12 12
102
Am186TMER and Am188TMER Microcontrollers Data Sheet
Synchronous Serial Interface (SSI) Waveforms
CLKOUTA
71
SDEN1 or SDEN0
72 72
SCLK
SDATA (RX)
75
DATA
77
SDATA (TX)
78
DATA
Note: SDATA is bidirectional and used for either transmit (TX) or receive (RX). Timing is shown separately for each case.
D
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
103
TQFP PHYSICAL DIMENSIONS PQL 100, Trimmed and Formed Thin Quad Flat Pack
100
1
15.80 16.20 13.80 14.20
13.80 14.20
1.35 1.45
D
1.00 REF. 0.17 0.27
R
0.50 BSC
15.80 16.20
A
T F
16-038-PQT-2_AI PQL100 9.3.96 lv
11 - 13 1.60 MAX
11 - 13
Notes: 1. All measurements are in millimeters, unless otherwise noted. 2. Not to scale; for reference only.
104
Am186TMER and Am188TMER Microcontrollers Data Sheet
PQFP PHYSICAL DIMENSIONS PQR 100, Trimmed and Formed Plastic Quad Flat Pack
17.00 17.40
Pin 100
12.35 REF
13.90 14.10
Pin 80
Pin 1 I.D.
Pin 30
0.25 MIN
D
2.70 2.90
R
A
T F
18.85 REF 19.90 20.10 23.00 23.40 3.35 MAX SEATING PLANE
16-038-PQR-1_AH PQR100 DP92 6-20-96 lv
Pin 50
0.65 BASIC
Notes: 1. All measurements are in millimeters, unless otherwise noted. 2. Not to scale; for reference only.
Am186TMER and Am188TMER Microcontrollers Data Sheet
105
D
106
R
A
T F
Am186TMER and Am188TMER Microcontrollers Data Sheet
INDEX
A
A17/PIO7, 30 A18/PIO8, 30 A19/PIO9, 30 absolute maximum ratings, 60 active mode clock waveforms, 95 AD15-AD8, 30 AD7-AD0, 30 address bus Am186ER disable in effect, 42 normal operation, 42 Am188ER disable in effect, 43 ALE, 31 alphabetic PIO pin assignments, 36 ambient temperatures ambient, 62 PQFP with four-to-six layer board, 65 PQFP with two-layer board, 63 TQFP with four-to-six layer boards, 66 TQFP with two-layer board, 64 AO15-AO8, 30 application considerations, 14 ARDY, 31 asynchronous ready waveforms, 97 asynchronous serial port, 56
C
chip-select low memory, 51 overlap, 51 timing, 49 unit, 49 upper memory, 51 chip-selects midrange memory, 51 peripheral, 52 CLKOUTA, 31 CLKOUTB, 31 clock (25 MHz), 92 clock (33 MHz), 93 clock (40 and 50 MHz), 94 clock and power management, 44 clock frequencies minimum and maximum, 44 clock generation, 14 clock organization, 48 clock source crystal driven, 45 clock waveforms active mode, 95 power-save mode, 95 clocking modes, 39 commercial operating ranges, 60 comparison Am186ER and 80C186 microcontrollers, 15 crystal selecting, 45 crystal-driven clock source, 45 customer support, 13 documentation and literature, 13 hotline and web, 13 literature ordering, 13 third-party development support products, 13 web home page, 13
B
BHE/ADEN, 31 block diagram Am186ER, 2 Am188ER, 3 bus cycle encoding, 37 bus hold waveforms entering, 101 leaving, 101 bus interface unit, 41 bus operation, 41 byte write enables, 41
Am186TMCC Communications Controller Data Sheet
Index-1
D
DC characteristics, 60 demonstration board products, 13 DEN/PIO5, 31 description, 1 functional, 40 direct memory access, 54 DMA Am186ER maximum transfer rates, 55 asynchronous serial port transfers, 55 channel control registers, 55-56 operation, 55 priority, 55-56 transfers through serial port, 56 unit block diagram, 56 documentation See customer support. DRQ1-DRQ0, 32 DT/R/PIO4, 32
H
HLDA, 32 HOLD, 32 hotline and world wide web support, 13
I
I/O circuitry, 59 I/O space, 40 industrial operating ranges, 60 initialization and processor reset, 48 input/output circuitry, 59 INT0, 32 INT1/SELECT, 32 INT2/INTA0/PIO31, 33 INT3/INTA1/IRQ, 33 INT4/PIO30, 33 interaction with external RAM, 52 internal memory, 52 internal memory disable, 52 internal RAM show read cycle waveform, 77 interrupt acknowledge cycle (25 and 33 MHz), 87 interrupt acknowledge cycle (40 and 50 MHz), 88 interrupt acknowledge cycle waveforms, 89 interrupt control unit, 53 programming, 53
E
emulator and debug modes, 52 internal memory disable, 52 show read enable, 52 external source clock, 45
F
features 3.3-V operation with 5-V-tolerant I/O, 14 available native development tools, applications, and system software, 1 enhanced bus interface, 1 enhanced functionality, 1, 14 enhanced integrated peripherals, 1 enhanced performance, 14 faster access to memory and clock input modes, 1 integrated RAM, 14 memory integration, 1 software-compatible, 1 x86 software compatibility, 14 four-pin interface, 57 functional description, 40
J
junction temperature calculation, 62
L
LCS/ONCE0, 33 literature See customer support. logic diagram ARDY and SRDY synchronization, 49 low memory chip select, 51 low-voltage operation, 57 low-voltage standard, 59
G
GND, 32
Index-2
Am186TMCC Communications Controller Data Sheet
M
MCS2-MCS0, 34 MCS3/RFSH/PIO25, 33 memory interface, 14 example, 15 memory maps, 50 diagram, 50 memory organization, 40 midrange memory chip selects, 51 modes emulator and debug, 52
N
NMI, 34 nonmultiplexed address bus, 41 numeric PIO pin assignments, 36
O
operating ranges, 60 commercial and industrial, 60 operation low-voltage, 57 ordering information, 4 oscillator configurations, 45 output enable, 41
P
PCB, 44 reading and writing, 44 PCS0/PIO16, 34 PCS1/PIO17, 34 PCS2/PIO18, 34 PCS3/PIO19, 34 PCS3-PCS0, 34 PCS5/A1/PIO3, 34 PCS6/A2/PIO2, 34 peripheral chip selects, 52 peripheral control block, 44 peripheral waveforms, 98 phase-locked loop, 44 pins A19-A0, 30 AD15-AD8, 30 AD7-AD0, 30 ALE, 31 alphabetic PIO assignments, 36 AO15-AO8, 30 ARDY, 31
BHE/ADEN, 31 CLKOUTA, 31 CLKOUTB, 31 clocking modes, 39 DEN/PIO5, 31 descriptions, 30 DRQ1-DRQ0, 32 DT/R/PIO4, 32 GND, 32 HLDA, 32 HOLD, 32 INT0, 32 INT1/SELECT, 32 INT2/INTA0/PIO31, 33 INT3/INTA1/IRQ, 33 INT4/PIO30, 33 LCS/ONCE0, 33 MCS2-MCS0, 34 MCS3/RFSH/PIO25, 33 NMI, 34 numeric PIO assignments, 36 PCS0/PIO16, 34 PCS1/PIO17, 34 PCS3-PCS0, 34 PCS6/A2/PIO2, 34 PIO, 57 PIO31-PIO0, 35 RD, 35 RES, 35 RFSH2/ADEN, 35 RXD/PIO28, 35 S0/SREN, 37 S1/IMDIS, 37 S2, 35 S6/CLKSEL1/PIO29, 37 SCLK/PIO20, 37 SDATA/PIO21, 37 SDEN0/PIO22, 37 SDEN1/PIO23, 37 SRDY/PIO6, 38 TMRIN0/PIO11, 38 TMRIN1/PIO0, 38 TMROUT0/PIO10, 38 TMROUT1/PIO1, 38 TXD/PIO27, 38 UCS/ONCE1, 38 used by emulators, 30 UZI/CLKSEL2/PIO26, 38 VCC, 39 WB (Am188ER microcontroller only), 39 WHB, 39 WLB (Am186ER microcontroller only), 39 WR, 39 X1, 39 X2, 39 PIO31-PIO0, 35 plastic quad flat pack, 105
Am186TMCC Communications Controller Data Sheet
Index-3
PLL, 44 power consumption calculation, 62 power savings, 59 power-save mode clock waveforms, 95 power-save operation, 48 PQFP connection diagram and pinouts Am186ER, 22 Am188ER, 25 PQFP physical dimensions, 105 PQFP pin assignments Am186ER sorted by pin name, 24 sorted by pin number, 23 Am188ER sorted by pin name, 27 sorted by pin number, 26 programmable I/O (PIO) pins, 57 programming interrupt control unit, 53 ready and wait-state, 49 pseudo static RAM support, 44 PSRAM support, 44 PSRAM read cycle (25 and 33 MHz), 78 PSRAM read cycle (40 and 50 MHz), 79 PSRAM read cycle waveforms, 80 PSRAM refresh cycle (25 and 33 MHz), 84 PSRAM refresh cycle (40 and 50 MHz), 85 PSRAM refresh cycle waveforms, 86 PSRAM write cycle waveforms, 83 PSRAM write cycle (25 and 33 MHz), 81 PSRAM write cycle (40 and 50 MHz), 82
reset configuration register, 48 reset waveforms, 100 related signals, 100 revision history, 10 RFSH2/ADEN, 35 RXD/PIO28, 35
S
S0/SREN, 37 S1/IMDIS, 37 S2, 35 S6/CLKSEL1/PIO29, 37 SCLK/PIO20, 37 SDATA/PIO21, 37 SDEN0/PIO22, 37 SDEN1/PIO23, 37 serial ports DMA transfers, 55 software halt cycle (25 and 33 MHz), 90 software halt cycle (40 and 50 MHz), 90 software halt cycle waveforms, 91 source clock external, 45 SRDY/PIO6, 38 SSI, 102 multiple read, 58 multiple write, 58 waveforms, 103 support, 13 switching characteristics clock (25 MHz), 92 clock (33 MHz), 93 clock (40 and 50 MHz), 94 commercial, 67 industrial, 67 internal RAM show read cycle (25 and 33 MHz), 76 interrupt acknowledge cycle (25 and 33 MHz), 87 interrupt acknowledge cycle (40 and 50 MHz), 88 PSRAM read cycle (25 and 33 MHz), 78 PSRAM read cycle (40 and 50 MHz), 79 PSRAM refresh cycle (25 and 33 MHz), 84 PSRAM refresh cycle (40 and 50 MHz), 85 PSRAM write cycle (25 and 33 MHz), 81 PSRAM write cycle (40 and 50 MHz), 82 read cycle (25 and 33 MHz), 70 read cycle (40 and 50 MHz), 71 ready and peripheral timing (25 and 33 MHz), 96 ready and peripheral timing (40 and 50 MHz), 96 reset and bus hold (25 and 33 MHz), 99 reset and bus hold (40 and 50 MHz), 99 software halt cycle (25 and 33 MHz), 90 software halt cycle (40 and 50 MHz), 90
R
RAM interaction with external, 52 RD, 35 read cycle waveforms, 72 ready and peripheral timing (25 and 33 MHz), 96 ready and peripheral timing (40 and 50 MHz), 96 ready and wait-state programming, 49 refresh control unit, 53 related documents, 13 RES, 35 reset initialization and processor, 48 reset and bus hold (25 and 33 MHz), 99 reset and bus hold (40 and 50 MHz), 99 Index-4
Am186TMCC Communications Controller Data Sheet
synchronous serial interface (25 and 33 MHz), 102 synchronous serial interface (40 and 50 MHz), 102 write cycle (25 and 33 MHz), 72-73 write cycle (40 and 50 MHz), 74, 76 switching parameter symbols alphabetical key, 68 numerical key, 69 switching waveforms key, 67 synchronous ready waveforms, 97 synchronous serial interface, 56 multiple read, 58 multiple write, 58 synchronous serial interface (25 and 33 MHz), 102 synchronous serial interface (40 and 50 MHz), 102 synchronous serial interface waveforms, 103
V
VCC, 39
W
watchdog timer, 54 waveform internal RAM show read, 77 waveforms, 67 asynchronous ready, 97 bus hold entering, 101 leaving, 101 interrupt acknowledge cycle, 89 peripheral, 98 PSRAM read cycle, 80 PSRAM refresh cycle, 86 PSRAM write cycle, 83 read cycle, 72 reset, 100 signals related to reset, 100 software halt cycle, 91 SSI, 103 synchronous ready, 97 synchronous serial interface, 103 write cycle, 75 WB (Am188ER microcontroller only), 39 WHB, 39 WLB (Am186ER microcontroller only), 39 world wide web support, 13 WR, 39 write cycle waveforms, 75 www home page, 13 support, 13
T
thermal characteristics, 61 thermal characteristics equations, 61 thermal resistance, 61 thin quad flat pack, 104 third-party development support products, 13 timer control unit, 53 TMRIN0/PIO11, 38 TMRIN1/PIO0, 38 TMROUT0/PIO10, 38 TMROUT1/PIO1, 38 TQFP connection diagram and pinouts Am186ER, 16 Am188ER, 19 TQFP package, 61 TQFP physical dimensions, 104 TQFP pin assignments Am186ER, 19 sorted by pin name, 18 sorted by pin number, 17 Am188ER sorted by pin name, 21 sorted by pin number, 20 two-component address, 40 TXD/PIO27, 38 typical ambient temperatures, 62
X
X1, 39 X2, 39
U
UCS/ONCE1, 38 upper memory chip select, 51 UZI/CLKSEL2/PIO26, 38
Am186TMCC Communications Controller Data Sheet
Index-5
Trademarks (c) 2000 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Am386, Am5x86, and Am486 are registered trademarks, and Am186, Am188, E86, Elan, and AMD-K6 are trademarks of Advanced Micro Devices, Inc. FusionE86 is a service mark of Advanced Micro Devices, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective companies. Disclaimer The contents of this document are provided in connection with Advanced Micro Devices, Inc. ("AMD") products. AMD makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this publication. Except as set forth in AMD's Standard Terms and Conditions of Sale, AMD assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. AMD's products are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or in any other application in which the failure of AMD's product could create a situation where personal injury, death, or severe property or environmental damage may occur. AMD reserves the right to discontinue or make changes to its products at any time without notice. (c) 2000 Advanced Micro Devices, Inc. All rights reserved.
Am186TMCC Communications Controller Data Sheet

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