Datasheet A27020L-70, A27020L, A27020-70, A27020 Datasheet (AMICC)

A27020 Series

Preliminary 256K X 8 OTP CMOS EPROM

Document Title
256K X 8 OTP CMOS EPROM

Revision History

Rev. No. History Issue Date Remark

0.0 Initial issue August 2, 2002 Preliminary

PRELIMINARY (August, 2002, Version 0.0) AMIC Technology, Inc.

A27020 Series

Preliminary 256K X 8 OTP CMOS EPROM

Features

n 262,144 X 8 bit organization
n Programming voltage: 12.75V
n Access time: 55/70 ns (max.)
n Current: Operating: 30mA (max.) at 5MHz

Standby: 100µA (max.)

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

Pin Configurations

n DIP n PLCC

n All inputs and outputs are directly TTL-compatible
n Available in 32-pin DIP and 32-pin PLCC packages

operation and any input signals are TTL levels. The
A27020 is available in industry standard 32 pin dual-in­line and 32 pin PLCC packages.

VPP

A16
A15

A12

I/O0
I/O1

I/O2

GND

1
2
3
4

A7

5

A6

6

A5

7

A4

8

A3

9

A2

10

A1

11

A0

12
13
14 19

16

A27020

VCC

32

31

PGM

30

A17

29

A14
A13

28
27

A8
A9

26

A11

25
24

OE
A10

23
22

CE
I/O7

21

I/O6

20

I/O5
I/O4

1815

I/O3

17

A7
A6

A5
A4
A3
A2

A1
A0

I/O0

A12

A15

A16

VPP

VCC

A17

PGM

1

2

3

4
5
6

7
8
9
10

11
12

13

141615

I/O1

A27020L

I/O2

GND

32

31

30

29
28
27
26
25
24
23
22
21

17

18

19

20

I/O4

I/O3

I/O6

I/O5

A14
A13
A8
A9
A11

OE
A10

CE
I/O7

PRELIMINARY (August, 2002, Version 0.0) 1 AMIC Technology, Inc.

A27020 Series

CE

OE

PGM

CE OE PGM

Pin Configurations

Pin Name Function

A0-A17 Address Inputs

I/O7-I/O0 Data Inputs / Outputs

Chip Enable

Output Enable

Program Strobe

VPP Program Power Supply

VCC Power Supply

GND Ground

Operating Modes and Truth Table

Mode

Read VIL VIL X X X X VCC VCC Data Out

Output Disable VIL VIH X X X X VCC VCC Hi-Z

Standby VIH X X X X X VCC VCC Hi-Z

A0 A1 A9 VPP VCC I/O7-I/O0

Program VIL VIH VIL Pulse X X X 12.75V 6.25V Data In

Program Verify VIL VIL VIH X X X 12.75V 6.25V Data Out

Program Inhibit VIH X X X X X 12.75V 6.25V Hi-Z

Manufacturer Code

Device Code

Continuation Code

(3)

VIL VIL VIH VIL VIL VID VCC VCC 37H

(3)

VIL VIL VIH VIH VIL VID VCC VCC 64H

(3)

VIL VIL VIH VIL VIH VID VCC VCC 7FH

Notes:

1. X = Either VIH or VIL.

2. VID = 12V ± 0.5V.

3. A2 ~ A8 = A10 ~ A17 = VIL (For auto identification)

PRELIMINARY (August, 2002, Version 0.0) 2 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 100µA. 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

Absolute Maximum Ratings*

Ambient Operating Temperature (TA) . . . . -10°C to +85°C

Storage Temperature Plastic Package (T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to 125°C

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)

) . . . . . . . . . .

STG

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.

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.

*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.

PRELIMINARY (August, 2002, Version 0.0) 3 AMIC Technology, Inc.

A27020 Series

Read Mode DC Electrical Characteristics (Ta = 0°C to 70°C, VCC = 5V ± 10%, VPP = VCC)

Symbol Parameter Min. Max. Unit Conditions

VOH Output High Voltage 2.4 V

VOL Output Low Voltage 0.4 V IOL = 2.1mA

VIH Input High Voltage 2.0 VCC + 0.5 V

VIL Input Low Voltage -0.5 0.8 V

ILI Input Leakage Current -1 +1

ILO Output Leakage Current -1 +1

ICC

ISB VCC Standby Current (TTL) 1 mA

ISB1 VCC Standby Current (CMOS) 100

IPP VPP Current During Read 10

VCC Read Operating Current

30

µA

µA

mA

µA

µA

IOH = -400µA

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

IID A9 Auto Select Current 100

µA

A9 = VID, VCC = max.

Capacitance (TA = 25°C, f = 1.0MHz)

Symbol Parameter Min. Max. Unit Conditions

CIN Input Capacitance 8 pF VIN = 0V

COut Output Capacitance 8 pF VOut = 0V

* These parameters are sampled and not 100% tested.

PRELIMINARY (August, 2002, Version 0.0) 4 AMIC Technology, Inc.

A27020 Series

Read Mode AC Characteristics (Ta = 0°C to 70°C, VCC = 5V ± 10%, VPP = VCC)

Symbol Parameter

tCYC Cycle Time 55 70 ns

tAA Address Access Time 55 70 ns

tCE Chip Enable Access Time 55 70 ns

tOE Output Enable Access Time 30 35 ns

tOH

tHZ Output High Z Delay 20 20 ns

Read Mode Switching Waveforms

Output Hold after Address, CE or OE , whichever
Occurred First

55ns 70ns

Min. Max. Min. Max.

0 0 ns

tCYC

ADDRESS

Address Valid

Unit

CE

OE

OUTPUT

tAA

tCE

tOE

Valid

Output

tHZ

tOH

High-Z

PRELIMINARY (August, 2002, Version 0.0) 5 AMIC Technology, Inc.

A27020 Series

AC Measurement Conditions

for 55 ns • Input Rise and Fall Times ≤ 10 ns
‚ Input Pulse Voltage: 0V to 3Volt
ƒ Input and Output Timing Ref. Voltage: 1.5Volt

3.0V

1.5V 1.5V

TEST

POINTS

0V

INPUT OUTPUT

for 70 ns • Input Rise and Fall Times ≤ 10 ns
‚ Input Pulse Voltage: 0.4V to 2.4Volt
ƒ Input and Output Timing Ref. Voltage: 0.8V to 2.0Volt

2.4V

2.0V 2.0V

TEST

POINTS

0.4V
INPUT OUTPUT

AC Testing Load Circuit

1.3V

0.8V0.8V

1N914

3.3K

Ω

DEVICE

UNDER

TEST

CL = 30pF or 100pF

OUT

CL = 30pF for 55 ns
CL = 100pF for 70/90 ns
CL includes JIG capacitance

PRELIMINARY (August, 2002, Version 0.0) 6 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 100µs 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 = 0°C to 70°C, VCC = 6.25V ± 0.25V, VPP = 12.75V ± 0.25V)

Symbol Parameter Min. Max. Unit Test Conditions

VOH Output High Voltage 2.4 V

VOL Output Low Voltage 0.4 V IOL = 2.1mA

VIH Input High Voltage 2.0 VCC + 0.5 V

VIL Input Low Voltage -0.5 0.8 V

IOH = -400µA

ILI Input Leakage Current -1 +1

ICC VCC Current During Program 50 mA

IPP VPP Current During Program 50 mA

VID A9 Auto Select Voltage 11.5 12.5 V A9 = VID

VCC1 Programming Supply Voltage 6.0 6.5 V

VPP1 Programming Voltage 12.5 13 V

Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.

µA

VCC = max. Vin = 0V to VCC

CE = VIL

PRELIMINARY (August, 2002, Version 0.0) 7 AMIC Technology, Inc.

A27020 Series

Programming Mode AC Characteristics (Ta = 0°C to 70°C, VCC= 6.25V ± 0.25V, VPP = 12.75V ± 0.25V)

Symbol Parameter Min. Max. Unit

tAS Address Valid to Program Low 2

tDS Input Valid to Program Low 2

tVPS VPP High to Program Low 2

tVCS VCC High to Program Low 2

tCES

tPW Program Pulse Width 95 105

tDH Program High to Input transition 2

tOES

tOE

tOHZ

tAH

CE Low to Program Low

Input Transition to OE Low

OE Low to Output Valid

OE High to Output Hi-Z

OE High to Address Transition

2

2

100 ns

130 ns

0 ns

µs

µs

µs

µs

µs

µs

µs

µs

PRELIMINARY (August, 2002, Version 0.0) 8 AMIC Technology, Inc.

A27020 Series

Programming and Verify Mode AC Waveforms

PROGRAM

V

IH

PROGRAM VERIFY

ADDRESS

DATA

VPP

VCC

CE

VIL

VCC

VCC

V

IH

V

IH

VPP1

VCC1

VIL

VALID

tAS

DATA IN DATA OUT

tDS

tVPS

tDH

tOE

tVCS

tPWtCES

tOHZ

tAH

PGM

V

IL

tOES

VIH

OE

PRELIMINARY (August, 2002, Version 0.0) 9 AMIC Technology, Inc.

V

IL

A27020 Series

Programming Flowchart

START

ADDRESS=FIRST LOCATION

VCC=6.25V

INTERACTIVE

SECTION

PROGRAM ONE 100µs PULSE

VPP=12.75V

X = 0

INCREMENT X

VERIFY

SECTION

INCREMENT ADDRESS

FAIL

NO

X = 25?

NO

VERIFY BYTE

PASS

LAST ADDRESS

YES

VCC=VPP=5.0V

VERIFY ALL

BYTES ?

PASS

DEVICE PASSED

FAIL

YES

VERIFY BYTE

DEVICE FAILED

FAIL

PASS

PRELIMINARY (August, 2002, Version 0.0) 10 AMIC Technology, Inc.

A27020 Series

Ordering Information

Part No. Access Time (ns)

A27020-55 55 30 100 32Pin DIP

A27020L-55 55 30 100 32Pin PLCC

A27020-70 70 30 100 32Pin DIP

A27020L-70 70 30 100 32Pin PLCC

Operating Current

Max. (mA) at 5MHz

Standby Current

Max. (µA)

Package

PRELIMINARY (August, 2002, Version 0.0) 11 AMIC Technology, Inc.

A27020 Series

Package Information

P-DIP 32L Outline Dimensions unit: inches/mm

D

32

E

17

1

AL

A2

B

B1

16

A1

Base Plane

Seating Plane

e

θ

E

1

C

E

A

Symbol

A - - 0.210 - - 5.334
A1 0.015 - - 0.381 - ­A2 0.149 0.154 0.159 3.785 3.912 4.039

B - 0.018 - - 0.457 ­B1 - 0.050 - - 1.270 -

C - 0.010 - - 0.254 -

D 1.645 1.650 1.655 41.783 41.91 42.037

E 0.537 0.542 0.547 13.64 13.767 13.894
E1 0.590 0.600 0.610 14.986 15.240 15.494

EA 0.630 0.650 0.670 16.002 16.510 17.018

e - 0.100 - - 2.540 -

L 0.120 0.130 0.140 3.048 3.302 3.556

θ 0°

Dimensions in inches Dimensions in mm

Min Nom Max Min Nom Max

-

15° 0°

-

15°

Notes:

1. The maximum value of dimension D includes end flash.

2. Dimension E does not include resin fins.

PRELIMINARY (August, 2002, Version 0.0) 12 AMIC Technology, Inc.

A27020 Series

Package Information

PLCC 32L Outline Dimension unit: inches/mm

13

HD

D

5

e

14

20

21

A

b

b

1

GD

A1 A2

y

D

4

1

E

HE

32

30

29

θ

Symbol

Dimensions in inches Dimensions in mm

Min Nom Max Min Nom Max

A - - 0.134 - - 3.40
A1 0.0185 - - 0.47 - ­A2 0.105 0.110 0.115 2.67 2.80 2.93

b1 0.026 0.028 0.032 0.66 0.71 0.81

b 0.016 0.018 0.021 0.41 0.46 0.54

C 0.008 0.010 0.014 0.20 0.254 0.35

D 0.547 0.550 0.553 13.89 13.97 14.05

E 0.447 0.450 0.453 11.35 11.43 11.51

e 0.044 0.050 0.056 1.12 1.27 1.42

GD 0.490 0.510 0.530 12.45 12.95 13.46
GE
HD
HE 0.485 0.490 0.495 12.32 12.45 12.57

L 0.075 0.090 0.095 1.91 2.29 2.41

y

θ 0° - 10° 0° - 10°

0.390 0.410 0.430 9.91 10.41 10.92

0.585 0.590 0.595 14.86 14.99 15.11

- - 0.003 - - 0.075

c

L

GE

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.

PRELIMINARY (August, 2002, Version 0.0) 13 AMIC Technology, Inc.