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A27020 Series
Preliminary
Document Title 256K X 8 OTP CMOS EPROM Revision History
Rev. No.
0.0
256K X 8 OTP CMOS EPROM
History
Initial issue
Issue Date
August 2, 2002
Remark
Preliminary
PRELIMINARY
(August, 2002, Version 0.0)
AMIC Technology, Inc.
A27020 Series
Preliminary
Features
n n n n 262,144 X 8 bit organization Programming voltage: 12.75V Access time: 55/70 ns (max.) Current: Operating: 30mA (max.) at 5MHz Standby: 100A (max.) n All inputs and outputs are directly TTL-compatible n Available in 32-pin DIP and 32-pin PLCC packages
256K X 8 OTP CMOS EPROM
General Description
The A27020 chip is a high-performance 2,097,152 bit one-time programmable read only memory (OTP EPROM) organized as 256K by 8 bits. The A27020 requires only 5V power supply in normal read mode operation and any input signals are TTL levels. The A27020 is available in industry standard 32 pin dual-inline and 32 pin PLCC packages.
Pin Configurations
n DIP n PLCC
A12
A15
A16
A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND
2 3 4 5 6
31 30 29 28 27
PGM A17 32 31 A14 A7 A13 A6 A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/O2 I/O3 I/O4 GND I/O1 I/O4 I/O3 I/O5 I/O6 A5 A4 A3 A2 A1 A0 I/O0 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 30 29 28 27 26 4 3 2 1 A14 A13 A8 A9 A11 OE A10 CE I/O7
7 8 9 10 11 12 13 14 15 16
26 25 24 23 22 21 20 19 18 17
A27020L
A17 25 24 23 22 21
VPP
1
32
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AMIC Technology, Inc.
VPP
VCC
PGM
VCC
A27020
A27020 Series
Pin Configurations
Pin Name A0-A17 I/O7-I/O0 CE OE PGM VPP VCC GND Function Address Inputs Data Inputs / Outputs Chip Enable Output Enable Program Strobe Program Power Supply Power Supply Ground
Operating Modes and Truth Table
Mode Read Output Disable Standby Program Program Verify Program Inhibit Manufacturer Code Device Code
(3) (3)
CE VIL VIL VIH VIL VIL VIH VIL VIL
(3)
OE VIL VIH X VIH VIL X VIL VIL VIL
PGM X X X VIL Pulse VIH X VIH VIH VIH
A0 X X X X X X VIL VIH VIL
A1 X X X X X X VIL VIL VIH
A9 X X X X X X VID VID VID
VPP VCC VCC VCC 12.75V 12.75V 12.75V VCC VCC VCC
VCC VCC VCC VCC 6.25V 6.25V 6.25V VCC VCC VCC
I/O7-I/O0 Data Out Hi-Z Hi-Z Data In Data Out Hi-Z 37H 64H 7FH
Continuation Code
VIL
Notes: 1. X = Either VIH or VIL. 2. VID = 12V 0.5V. 3. A2 ~ A8 = A10 ~ A17 = VIL (For auto identification)
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AMIC Technology, Inc.
A27020 Series
Functional Description
Read Mode The A27020 has two control functions, both of which must be logically active in order to obtain data at the outputs. CE is the power control and should be used for device selection. OE is the output control and should be used to data to the output pins, which is independent of device selection. Assuming that addresses are stable, address access time (tAA) is equal to the delay from CE to output (tCE). Data is available at the output after a delay (tOE) from the falling edge of OE , as long as CE has been low and the addresses have been stable for at least tACC - tOE. Standby Mode The A27020 has a standby mode which reduces the active current from 30mA to 100A. The A27020 is placed in the standby mode by applying a CMOS high signal to CE . When in the standby mode, the output are in a high impedance state, independent of the OE . Auto Identify Mode The auto identify mode allows the reading out of a binary code from a EPROM that will identify its manufacturer and type. This mode is intended for use by programming equipment for the purpose of automatically matching the device to be programmed with its corresponding programming algorithm. To activate the mode, the programming equipment must apply 12.0V 0.5V on address line A9 of the A27020. Three identification code can be read from data output pin by toggling A0 and A1. The other addresses must be held at VIL during this mode. Byte 0 (with A0 at VIL, A1 at VIL) represents the manufacturer code which is 37H. Byte 1 and Byte 2 represent the device code and continuation code, which is 64H and 7FH respectively. All identifiers for these codes will possess odd parity, with MSB (IO7) defined the parity bit.
Absolute Maximum Ratings*
Ambient Operating Temperature (TA) . . . . -10C to +85C Storage Temperature Plastic Package (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to 125C Applied Input Voltage (VI): All Pins Except A9, VPP and VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to VCC + 0.6V A9, VPP . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 13.5V VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 7.0V Output Voltage (VO) . . . . . . . . . . . . -0.6V to 7.0V (Note 1)
*Comments
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to this device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied or intended. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
Notes: 1. During voltage transitions, the input may undershoot GND to -2.0V for periods less than 20 ns. Maximum DC voltage on input and I/O may overshoot to VCC + 2.0V for periods less than 20 ns. 2. When transitions, A9 and VPP may undershoot GND to -2.0V for periods less than 20 ns. Maximum DC input voltage on A9 and VPP is +13.5V which may overshoot to 14.0V for period less than 20 ns.
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AMIC Technology, Inc.
A27020 Series
Read Mode DC Electrical Characteristics (Ta = 0C to 70C, VCC = 5V 10%, VPP = VCC)
Symbol VOH VOL VIH VIL ILI Parameter Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Input Leakage Current 2.0 -0.5 -1 Min. 2.4 0.4 VCC + 0.5 0.8 +1 Max. Unit V V V V A VCC = max. Vin = 0V to VCC VCC = max. Vout = 0V to VCC VCC = max. CE = VIL, OE = VIL Iout = 0mA, at 5MHz VCC = max. CE = VIH VCC = max. CE = VCC - 0.2V CE = OE = VIL, VPP = VCC A9 = VID, VCC = max. Conditions IOH = -400A IOL = 2.1mA
ILO
Output Leakage Current
-1
+1
A
ICC
VCC Read Operating Current
30
mA
ISB
VCC Standby Current (TTL)
1
mA A
ISB1
VCC Standby Current (CMOS)
100
IPP IID
VPP Current During Read A9 Auto Select Current
10 100
A A
Capacitance (TA = 25C, f = 1.0MHz)
Symbol CIN COut Parameter Input Capacitance Output Capacitance Min. Max. 8 8 Unit pF pF Conditions VIN = 0V VOut = 0V
* These parameters are sampled and not 100% tested.
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AMIC Technology, Inc.
A27020 Series
Read Mode AC Characteristics (Ta = 0C to 70C, VCC = 5V 10%, VPP = VCC)
Symbol Parameter Min. tCYC tAA tCE tOE tOH Cycle Time Address Access Time Chip Enable Access Time Output Enable Access Time Output Hold after Address, CE or OE , whichever Occurred First Output High Z Delay 0 55 55 55 30 0 55ns Max. Min. 70 70 70 35 70ns Max. ns ns ns ns ns Unit
tHZ
20
20
ns
Read Mode Switching Waveforms
tCYC ADDRESS Address Valid
CE tCE OE tOE tAA OUTPUT Valid Output tOH High-Z
tHZ
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AMIC Technology, Inc.
A27020 Series
AC Measurement Conditions
for 55 ns * Input Rise and Fall Times 10 ns Input Pulse Voltage: 0V to 3Volt Input and Output Timing Ref. Voltage: 1.5Volt
3.0V 1.5V 0V INPUT
for 70 ns * Input Rise and Fall Times 10 ns Input Pulse Voltage: 0.4V to 2.4Volt Input and Output Timing Ref. Voltage: 0.8V to 2.0Volt
TEST POINTS
1.5V
OUTPUT
2.4V 2.0V 0.8V 0.4V INPUT
AC Testing Load Circuit
TEST POINTS
2.0V 0.8V OUTPUT
1.3V 1N914
3.3K DEVICE UNDER TEST OUT CL = 30pF or 100pF
CL = 30pF for 55 ns CL = 100pF for 70/90 ns CL includes JIG capacitance
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AMIC Technology, Inc.
A27020 Series
Programming and Program Verify
The programming flowchart is shown in Page 10. The A27020 is shipped with all bits being set to "1". Programming causes relevant bits to be changed to "0". The programming mode is started by setting VCC to +6.25V and VPP to +12.75V, while CE and PGM are at VIL, and OE is at VIH. Data to be programmed can be directly input in the 8 bit format through the data bus. The write programming algorithm reduces programming time by using 100s pulse followed by a byte verification to determine whether the byte has been successfully programmed. If the data does not pass the verification, an additional pulse programming is applied for a maximum of 25 pulses. On completion of 1 byte programming and, The verified address is incremented. After the final address is completed, all bytes are verified again with VCC = 5.0 Volt.
Program Inhibit
This mode is used to program one of multiple A27020 whose OE , PGM , VPP, VCC, address bus and data bus are connected in parallel. When programming is performed, other A27020 can be inhibited from being programmed by setting their CE pins to VIH.
Programming Mode DC Characteristics (Ta = 0C to 70C, VCC = 6.25V 0.25V, VPP = 12.75V 0.25V)
Symbol VOH VOL VIH VIL ILI ICC IPP VID VCC1 VPP1 Parameter Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Input Leakage Current VCC Current During Program VPP Current During Program A9 Auto Select Voltage Programming Supply Voltage Programming Voltage 11.5 6.0 12.5 2.0 -0.5 -1 Min. 2.4 0.4 VCC + 0.5 0.8 +1 50 50 12.5 6.5 13 Max. Unit V V V V A mA mA V V V CE = VIL A9 = VID VCC = max. Vin = 0V to VCC Test Conditions IOH = -400A IOL = 2.1mA
Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
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AMIC Technology, Inc.
A27020 Series
Programming Mode AC Characteristics (Ta = 0C to 70C, VCC= 6.25V 0.25V, VPP = 12.75V 0.25V)
Symbol tAS tDS tVPS tVCS tCES tPW tDH tOES tOE tOHZ tAH Parameter Address Valid to Program Low Input Valid to Program Low VPP High to Program Low VCC High to Program Low CE Low to Program Low Program Pulse Width Program High to Input transition Input Transition to OE Low OE Low to Output Valid OE High to Output Hi-Z OE High to Address Transition 0 Min. 2 2 2 2 2 95 2 2 100 130 105 Max. Unit s s s s s s s s ns ns ns
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AMIC Technology, Inc.
A27020 Series
Programming and Verify Mode AC Waveforms
PROGRAM VIH ADDRESS VIL tAS VALID
PROGRAM VERIFY
DATA tDS VPP1 VPP VCC tVPS VCC1 VCC VCC tVCS VIH CE VIL tCES VIH PGM
DATA IN tDH
DATA OUT
tOE tOHZ
tAH
tPW
VIL tOES VIH
OE
VIL
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AMIC Technology, Inc.
A27020 Series
Programming Flowchart
START
ADDRESS=FIRST LOCATION
INTERACTIVE SECTION
VCC=6.25V VPP=12.75V
X=0
PROGRAM ONE 100s PULSE
INCREMENT X
X = 25?
YES
NO FAIL FAIL
VERIFY BYTE
VERIFY BYTE
PASS PASS INCREMENT ADDRESS NO LAST ADDRESS
YES VCC=VPP=5.0V VERIFY SECTION
VERIFY ALL BYTES ? PASS DEVICE PASSED
FAIL
DEVICE FAILED
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AMIC Technology, Inc.
A27020 Series
Ordering Information
Part No. A27020-55 A27020L-55 A27020-70 A27020L-70 Access Time (ns) 55 55 70 70 Operating Current Max. (mA) at 5MHz 30 30 30 30 Standby Current Max. (A) 100 100 100 100 Package 32Pin DIP 32Pin PLCC 32Pin DIP 32Pin PLCC
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AMIC Technology, Inc.
A27020 Series
Package Information P-DIP 32L Outline Dimensions
unit: inches/mm
D 32 17
E
1
16 E1 C
A2
A
A1
Base Plane
L
Seating Plane B B1 e EA
Symbol A A1 A2 B B1 C D E E1 EA e L
Dimensions in inches Min 0.015 0.149 1.645 0.537 0.590 0.630 0.120 0 Nom 0.154 0.018 0.050 0.010 1.650 0.542 0.600 0.650 0.100 0.130 Max 0.210 0.159 1.655 0.547 0.610 0.670 0.140 15
Dimensions in mm Min 0.381 3.785 41.783 13.64 14.986 16.002 3.048 0 Nom 3.912 0.457 1.270 0.254 41.91 13.767 15.240 16.510 2.540 3.302 Max 5.334 4.039 42.037 13.894 15.494 17.018 3.556 15
Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins.
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AMIC Technology, Inc.
A27020 Series
Package Information PLCC 32L Outline Dimension
HD D 13 5
unit: inches/mm
14
4
1 32
20
30
21
29
A2
A
HE
E
b1 GD y D
A1
e
b
GE
Dimensions in inches
Dimensions in mm Min 0.47 2.67 0.66 0.41 0.20 13.89 11.35 1.12 12.45 9.91 14.86 12.32 1.91 0 Nom 2.80 0.71 0.46 0.254 13.97 11.43 1.27 12.95 10.41 14.99 12.45 2.29 Max 3.40 2.93 0.81 0.54 0.35 14.05 11.51 1.42 13.46 10.92 15.11 12.57 2.41 0.075 10
Symbol
Min A A1 A2 b1 b C D E e GD GE HD HE L y 0.0185 0.105 0.026 0.016 0.008 0.547 0.447 0.044 0.490 0.390 0.585 0.485 0.075 0 Nom 0.110 0.028 0.018 0.010 0.550 0.450 0.050 0.510 0.410 0.590 0.490 0.090 Max 0.134 0.115 0.032 0.021 0.014 0.553 0.453 0.056 0.530 0.430 0.595 0.495 0.095 0.003 10
Notes: 1. Dimensions D and E do not include resin fins. 2. Dimensions GD & GE are for PC Board surface mount pad pitch design reference only.
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L
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