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EXEL Microelectronics, Inc.
XL9020
2,048-Bit Serial Electrically Erasable PROM 2.7 to 5.5 Volt Operation
FEATURES * 1 MHz Clock Rate * * Extended Temperature Range: -40C to +85C Low Power Consumption -- Active current 1.5 mA -- Standby current 2A * 2.7 to 5.5 volt operation (both READ and WRITE) * * 4-Wire Bus Interface Hardware & Software Write Protection -- Defaults to disabled state at power up -- Software instructions for WRITE-enable/ disable * Internally Organized as 128 x 16 bits * Versatile, Easy-to-Use Interface -- READY/BUSY status signal BUSY -- Automatic write cycle time-out Advanced CMOS E2PROM Technology High Reliability -- Endurance: 100,000 cycles per byte -- Data retention: 100 years 8-Pin PDIP or SOIC Packages
PIN CONFIGURATIONS
Plastic Dual-in-line "P" Package
CS 1 SK 2 DI 3 DO 4 8 VCC 7 6 R/B WC
5 GND
EIAJ Small Outline "F" Package
R/B 1 VCC 2 CS 3 SK 4 8 WC 7 GND 6 DO 5 DI
* *
D0018 ILL A01.2
*
PIN NAMES CS SK DI DO GND WC R/B VCC Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground Write Control READY/BUSY Output Power Supply
OVERVIEW The XL9020 is a cost effective 2,048-bit, nonvolatile, serial E2PROM designed to directly connect with serial interface. It is fabricated using EXEL's advanced CMOS E2 PROM technology. The XL9020 provides external read/write memory arranged as 128 registers of 16 bits each. Four 8-bit instructions control the operation of the device, which include read, write, write enable and write disable. The READY/BUSY pin indicates the status of the device when polled during the WRITE operation. The data output pin (DO) also indicates the status of the device during self-timed nonvolatile programming cycle. To protect against inadvertent writes, the WRITE instruction is accepted only while the chip is in the write enabled state. After the initiation of the write cycle, if Chip Select (CS) is brought into LOW state, while SK is low, the DO pin will indicate the READY/BUSY status of the chip.
EXEL Microelectronics, Inc. 2150 Commerce Drive * San Jose, CA 95131 Phone 408 432-0500 * Fax 408 432-8710 * Internet www.exel.com
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BLOCK DIAGRAM
DO DI INSTRUCTION REGISTER
DATA REGISTER
R/W AMPS INSTRUCTION DECODE, CONTROL AND CLOCK GENERATION ADDRESS REGISTER LOW VCC DETECTOR
WRITE ENABLE
ADDRESS DECODER
E2 PROM ARRAY (128 X 16)
CS WC SK
HIGH VOLTAGE GENERATOR R/B
D0018 ILL B01.1
APPLICATIONS The XL9020 is ideal for high volume applications requiring low power and low density data storage. It uses a costeffective, space saving 8-pin package, and readily interfaces with standard microprocessors and popular microcontrollers. Candidate applications include alarm devices, air conditioners, TV's, VCRs, cameras, computer terminals, smart cards, electronic locks, meters, robotics and telephones, to name just a few. ENDURANCE AND DATA RETENTION The XL9020 is designed for applications requiring up to 100,000 write cycles per bit. It provides 100 years of secure data retention, with or without power applied. DEVICE OPERATION The XL9020 is a clocked serial port compatible E2PROM. It operates on a single power supply ranging from 2.7V to 5.5V and it has an on-chip voltage generator to provide the high voltage needed during a programming operation. Input data is latched on the rising edge of the clock(SK), and data is output on the falling edge of the clock. Data is grouped in 8-bit bytes. The beginning 8 bits specify the mode, the next 8 bits specify the address, and subsequent 16 bits specify the I/O data. Each instruction sent to the device includes a 4 bit start sequence, 1010, a 4 bit opcode and an 8 bit address including a dummy bit at the
end. For a WRITE operation, a 16 bit data field is required following the 8 bit address field. The device requires an active LOW CS in order to be selected. Each instruction must be preceded by a HIGH-to-LOW transition of CS before the 4 bit start sequence is given. Prior to the 4 bit start sequence (1010), inputs of all other logical sequence are ignored. During the self-timed internal programming cycle that accompanies a write, the SK clock is deactivated. It is needed only when instructions or data are being passed to or from the memory. Any of the four modes (read, write, write enable, write disable) may be specified. The write time is set by internal timer, and determination of whether a write operation is in progress or not can be made from the status of the READY/BUSY pin. Read (READ) The read instruction is the only instruction that outputs serial data on the DO pin. After the read instruction and address have been decoded, data is transferred from the selected memory register into the output register. The output on DO changes during the HIGH to LOW transition of SK. Write (WRITE) After a write instruction and its address have been decoded, the device expects 16 bits of data. These are to be transferred into the specific memory register which has previously been automatically erased. After the last data bit has been clocked into DI on the 32nd clock edge, the
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self-timed internal programming cycle is initiated. The write cycle status can be monitored by observing the READY/BUSY pin. It will output the BUSY status (LOW) one tSV after the rising edge of the 32nd clock (the last data bit) and will stay LOW until the WRITE cycle is complete. It will then output a HIGH status until the next WRITE cycle. CS must be held HIGH for the minimum of tCS before the next instruction is entered. Another way to get READY/BUSY status is from the DO pin. During a WRITE cycle, asserting a LOW on the CS pin will cause the DO pin to output the READY/BUSY status. It is necessary for SK to be brought into a LOW state 500ns prior to CS going LOW. Asserting a HIGH on CS will put the DO pin in a high impedance state again. After the WRITE cycle is completed, the DO pin will output HIGH when the device is deselected. The first rising edge of the DI pin will reset DO back into the high impedance state. Write Control (WC PIN) WC The WC pin provides hardware write control. When WC pin is low, the chip is enabled to execute WRITE functions. When WC pin is high, all WRITE functions are locked out. The device shows ready status on the R/B pin and on the DO pin, if CS and SK are low. In addition, if WC pin changes state during the write cycle, the write operation will be aborted not guaranteeing the data. The WC pin does not have any effect on the READ, EWEN and EWDS operations. Write Enable/Disable When the XL9020 is powered up, it comes up in the write disabled state. In order to be programmable, it must receive an enable instruction. The device remains programmable until a disable instruction is entered, or until it is powered down. The disable instruction provides protection against inadvertent writes. Read operation is not affected by this command.
INSTRUCTION SET
Instruction READ WRITE Erase/Write Enable (EWEN) Erase/Write Disable (EWDS) Start Bits 1010 1010 1010 1010 OP Code 1000 0100 0011 0000 Address Data (A0-A6) 0 (A0-A6) 0 XXXXXXXX XXXXXXXX
D0018 PGM T01.1
Input
D0-D15
3
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ABSOLUTE MAXIMUM RATINGS Temperature under bias ..................................................................................................................... -40C to +85C Storage Temperature. ...................................................................................................................... -65C to +150C Lead Soldering Temperature (less than 10 seconds) ...................................................................................... 300C Supply Voltage ......................................................................................................................................... -0.3 to 7.0V Voltage on Any Pin. ........................................................................................................................ .-0.3 to Vcc +0.3V ESD Rating ...................................................................................................................................................... 2000V
NOTE: These are STRESS ratings only. Appropriate conditions for operating these devices are given elsewhere in this specification. Stresses beyond those listed here may permanently damage the part. Prolonged exposure to maximum ratings may affect device reliability.
DC ELECTRICAL CHARACTERISTICS T A = -40C to +85C, VCC = 2.7 to 5.5 Volts
Symbol ICC1 ICC2 ISB ILI ILO VIL1 VIH1 VIL2 VIH2 VOL1 VOH1 VOL2 VOH1 Parameter Operating Current Operating Current Standby Current Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Output Low Voltage Output High Voltage Conditions CS = VCC , SK = 1MHz CS = VIH , SK = 1MHz CS = DI = SK = 0V VIN = 0V to VCC (CS, SK, DI) VOUT = 0V to V CC , CS = 0V DI Pin DI Pin CS, SK, WC Pin CS, SK, WC Pin IOL = 2.1 mA TTL IOH = -400 A TTL IOL = 10 A CMOS IOH = -10 A CMOS VCC-0.2 0.2 VCC-0.2 0.8xVCC 0.7xVCC 0.2xVCC 0.8xVCC 0 2.4 0.4 VCC 0.2 -1 -1 VCC = 3.0V10% Min. Max. 1.5 0.5 2 1 1 0.3xVCC 0.7xVCC 0.2xVCC -1 -1 VCC = 5.0V10% Min. Max. 3 1 3 1 1 0.3xVCC Units mA mA A A A V V V V V V V V
D0018 PGM T02.1
AC ELECTRICAL CHARACTERISTICS TA = -40C to +85C, VCC = 2.7 to 5.5 Volts
VCC = 3.0V10% Symbol fSK t WH tWL tCS tCSS tDIS tCSH tDIH tPD1 tPD0 tSV tOH tE/W tWCS tWCH
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VCC = 5.0V10% Min. Max. 1 450 450 1000 200 150 0 150 Units MHz ns ns ns ns ns ns ns 350 350 1000 0 400 10 0 0 ns ns ns ns ms ns ns
D0018 PGM T03.1
Parameter SK Clock Frequency SK HIGH Time SK LOW Time Minimum CS HIGH Time CS Setup Time DI Setup Time CS Hold Time DI Hold Time Output Delay to "1" Output Delay to "0" CS to Status Valid CS to DO in 3-state Write Cycle Time Write Control Setup Time Write Control Hold TIme
Conditions
Min.
Max. 1
450 450 1000 Relative to SK Relative to SK Relative to SK Relative to SK AC Test AC Test AC Test CS Hi to DO Hi-z Relative to CS Relative to CS 0 200 150 0 150 350 350 1000 400 15 0 0
4
XL9020
CAPACITANCE TA = 25C, f = 1MHz
Symbol CIN COUT Parameter Input Capacitance Output Capacitance Max 5 5 Units pF pF
D0018 PGM T04.1
CS tCSS SK tWL tDIS DI tPD DO tPD tOH tWH tDIH tCSH
tCS
WC
D0018 ILL F01.2
FIGURE 1. SYNCHRONOUS DATA TIMING
5
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SK
1
4
8
16
32
tCS CS
STANDBY
DI
1
0
1
0
1
0
0
0
A0
A6
0
HI -Z
DO
H
D0
D15
HI -Z
tOH
D0018 ILL F02.1
R/B FIGURE 2. READ CYCLE TIMING
SK
1
4
8
16
32
CS tCS DI
1 0 1 0 0 1 0 0 A0 A6 0 D0 D15
HI-Z
HI-Z
DO R/B
tSV
tE/W
tWCS WC
tWCH
tWCS
D0018 ILL F03.2
FIGURE 3. WRITE CYCLE TIMING
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XL9020
SK
1
4
8 Enable = 1 1 Disable = 0 0
12
16
CS
DI
1
0
1
0
0
0
HI -Z
DO
H
R/B
D0018 ILL F04.1
FIGURE 4. ERASE/WRITE ENABLE AND DISABLE CYCLE TIMING
200ns
CS
SK
CLOCK
DI
WRITE COMMAND
tPD DO R/B
READY HIGH - Z BUSY BUSY
tOH
READY READY
D0018 ILL F05.1
HIGH - Z
FIGURE 5. READY/BUSY STATUS OUTPUT TIMING BUSY
7
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PACKAGE DIAGRAMS Plastic Dual-in-line (Type "P") Package (PDIP)
.375 (9.525)
PIN 1 INDICATOR
.250 (6.350)
.300 (7.620) .070 (1.778) .0375 (0.952) .015 (.381) Min. SEATING PLANE .130 (3.302) .060 .005 (1.524) .127 TYP. .100 (2.54) TYP. .130 (3.302) .018 (.457) TYP. .350 (8.89) .009 .002 (.229 .051) 5-7TYP. (4 PLCS) 0-15
8pn PDIP/P ILL.3
ALL DIMENSIONS IN INCHES (MM).
8 Pin SOIC (Type "F") EIAJ Package* (175 mil body width)
.201 5.10 .193 4.90 8 5 .035 (.90) Ref. .252 .236 6.40 6.00 .006 .002 (.15 .05) .012 (.30) Min.
.177 .169 4.50 4.30
.050 (1.27) TYP. .050 (1.270) TYP. 8 Places
PIN #1 .063 .055 .160 .140 .008 .000 .050 (1.27) .20 BSC 0
4 10 Max. SEATING PLANE .020 .012 .50 .30
.275 (6.99) TYP.
.030 (.762) TYP. 8 Places
FOOTPRINT
.006 (.15)
8pn EIAJ SOIC ILL.3
ALL DIMENSIONS IN INCHES (MM).
* See cover page for pinout options.
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XL9020
ORDERING INFORMATION Standard Configurations
Prefix XL Part Type 9020 Package Type P, F
D0018 PGM T05.1
Part Numbers: XL 9020 P
Prefix EXEL Product
Part Number 9020
Package Type F = SOIC (EIAJ) 175 mil P = PDIP 300 mil
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MARKING INFORMATION
Marking for XL9020P
Marking for XL9020F
YWW XL9020P
9020
YWW
D0018 ILL C01.2
* See cover page for pinout options.
TAPE AND REEL (EMBOSSED) INFORMATION Surface mount devices, which are normally shipped in antistatic plastic tubes, are also available mounted on embossed tape for customers using automatic placement systems. The following diagram provides general information regarding the direction of the IC's. Tape "E2" shall be designated with PIN 1 at the trail direction.
PIN 1
E2
Tape un-reel direction
T&R ILL.2
Quantity per reel: 2,500 SOIC parts.
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XL9020
NOTES:
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NOTICE EXEL Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXEL Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, EXEL Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission. EXEL Microelectronics, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXEL Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of EXEL Microelectronics, Inc. is adequately protected under the circumstances. (c) Copyright 1996 EXEL Microelectronics, Inc. Reproduction in whole or in part, without the prior written consent of EXEL Microelectronics, Inc. is prohibited.
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