Datasheet A276308AL-90, A276308AL, A276308A-90, A276308A-70, A276308A Datasheet (AMICC)

A276308A

64K X 8 OTP CMOS EPROM

Document Title
64K X 8 OTP CMOS EPROM

Revision History

Rev. No. History Issue Date Remark

0.0 Initial issue March 24, 2000 Preliminary

0.1 Change Program Verify VCC to 6.25V March 14, 2001

1.0 Final spec release December 17, 2001

(December, 2001, Version 1.0) AMIC Technology, Inc.

A276308A

64K X 8 OTP CMOS EPROM

Features

n 65,536 X 8 bit organization
n Programming voltage: 12.75V
n Access time: 55/70/90 ns (max.)
n Current: Operating: 30mA (max.) at 5MHz

Standby: 100µA (max.)

General Description

The A276308A chip is a high-performance 524,288 bit
one-time programmable read only memory (OTP
EPROM) organized as 64K by 8 bits. The A276308A
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 28-pin DIP and 32-PLCC packages

operation and any input signals are TTL levels. The
A276308A is available in industry standard 28 pin dual-in­line and 32 lead PLCC packages.

A15
A12

I/O0
I/O1
I/O2

GND

1
2

A7

3

A6

4

A5

5

A4

6

A3

7

A2

8

A1

9
10

A0

11
12
13

14 15

28
27
26
25
24
23

A276308A

22
21

20
19
18

17
16

VCC
A14
A13
A8
A9
A11

OE / VPP
A10
CE

I/O7
I/O6

I/O5
I/O4
I/O3

NC

I/O0

A7

A12

A15

NC

VCC

A14

A13

1

2

3

4
A6
A5

A4
A3
A2
A1

A0

5
6

7
8
9
10

11
12

13

A276308AL

141615

I/O2

I/O1

GND

17

NC

32

31

30

29
28
27
26
25
24
23
22
21

18

19

20

I/O3

I/O5

I/O4

A8
A9
A11
NC

OE / VPP
A10

CE
I/O7

I/O6

(December, 2001, Version 1.0) 1 AMIC Technology, Inc.

A276308A

CE

OE

CE OE

Pin Configurations

Pin Name Function

A0-A15 Address Inputs

I/O7-I/O0 Data Inputs / Outputs

/ VPP

Chip Enable

Output Enable / Program Power Supply

VCC Power Supply

GND Ground

NC No Internal Connection

Operating Modes and Truth Table

Mode

/ VPP

Read VIL VIL X X X VCC Data Out

Output Disable VIL VIH X X X VCC Hi-Z

Standby VIH X X X X VCC Hi-Z

Program VIL 12.75V X X X 6.25V Data In

A0 A1 A9 VCC I/O7-I/O0

Program Verify VIL VIL X X X 6.25V Data Out

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

Manufacturer Code

Device Code

Continuation Code

(3)

VIL VIL VIL VIL VID VCC 37H

(3)

VIL VIL VIH VIL VID VCC 2CH

(3)

VIL VIL VIL VIH VID VCC 7FH

Notes:

1. X = Either VIH or VIL.

2. VID = 12V ± 0.5V.

3. A2 ~ A8 = A10 ~ A15 = VIL (For auto identification)

(December, 2001, Version 1.0) 2 AMIC Technology, Inc.

A276308A

Functional Description

Read Mode

The A276308A 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
tAA - tOE.

Standby Mode
The A276308A has a standby mode which reduces the

active current from 30mA to 100µA. The A276308A 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 .

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.

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 A276308A.
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 2CH 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.

(December, 2001, Version 1.0) 3 AMIC Technology, Inc.

A276308A

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.

(December, 2001, Version 1.0) 4 AMIC Technology, Inc.

A276308A

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

Symbol Parameter

tCYC Cycle Time 55 70 90 ns

tAA Address Access Time 55 70 90 ns

tCE Chip Enable Access Time 55 70 90 ns

tOE Output Enable Access Time 30 35 40 ns

tOH

tHZ Output High Z Delay 20 20 25 ns

Read Mode Switching Waveforms

Output Hold after Address, CE or

OE , whichever Occurred First

55ns 70ns 90ns

Min. Max. Min. Max. Min. Max.

0 0 0 ns

tCYC

ADDRESS

Address Valid

Unit

CE

tCE

OE / VPP

tHZ

tOE

t

tAA

OUTPUT

(December, 2001, Version 1.0) 5 AMIC Technology, Inc.

Valid

Output

OH

High-Z

A276308A

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 70/90 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

(December, 2001, Version 1.0) 6 AMIC Technology, Inc.

A276308A

Programming and Program Verify

The programming flowchart is shown in Page 10.
The A276308A 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, OE /VPP to +12.75V and CE is at VIL. 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 A276308A
whose VCC, address bus and data bus are connected in
parallel. When programming is performed, other
A276308A can be inhibited from being programmed by

setting their CE pins to VIH and OE /VPP pins to
+12.75V.

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

(December, 2001, Version 1.0) 7 AMIC Technology, Inc.

A276308A

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 Set up Time 2

tVCS VCC Set up Time 2

tPW Program Pulse Width 95 105

tDH Data Hold Time 2

tVR

tDV

tDFP Chip Enable to Output Float Delay 130 ns

tAH Address Hold Time 0 ns

OE / VPP Recovery Time

Data Valid from CE

2

100 ns

µs

µs

µs

µs

µs

µs

µs

(December, 2001, Version 1.0) 8 AMIC Technology, Inc.

A276308A

Programming and Verify Mode AC Waveforms

ADDRESS

DATA

OE / VPP

VCC

VIH

VIL

VCC

VCC

PROGRAM

PROGRAM VERIFY

VALID

tAS

Hi-Z

DATA IN DATA OUT

tDS

tDH

tDV

VPP1

tVPS

tVPS

VCC1

tVCS

tDFP

tAH

tPW

CE

VIH

VIL

tVR

(December, 2001, Version 1.0) 9 AMIC Technology, Inc.

A276308A

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

(December, 2001, Version 1.0) 10 AMIC Technology, Inc.

A276308A

Ordering Information

Part No. Access Time (ns)

A276308A-55 55 30 100 28Pin DIP

A276308AL-55 55 30 100 32Pin PLCC

A276308A-70 70 30 100 28Pin DIP

A276308AL-70 70 30 100 32Pin PLCC

A276308A-90 90 30 100 28Pin DIP

A276308AL-90 90 30 100 32Pin PLCC

Operating Current

Max. (mA) at 5MHz

Standby Current

Max. (µA)

Package

(December, 2001, Version 1.0) 11 AMIC Technology, Inc.

A276308A

Package Information

P-DIP 28L Outline Dimensions unit: inches/mm

D

28

E1

15

1

S

AL

A2

B

B1

14

A1

Base Plane

Seating Plane

e

α

E

C

eA

Symbol

A - - 0.210 - - 5.33
A1 0.010 - - 0.25 - ­A2 0.150 0.155 0.160 3.81 3.94 4.06

B 0.016 0.018 0.022 0.41 0.46 0.56
B1 0.058 0.060 0.064 1.47 1.52 1.63

C 0.008 0.010 0.014 0.20 0.25 0.36

D - 1.460 1.470 - 37.08 37.34

E 0.590 0.600 0.610 14.99 15.24 15.49
E1 0.540 0.545 0.550 13.72 13.84 13.97

e 0.090 0.100 0.110 2.29 2.54 2.79
L 0.120 0.130 0.140 3.05 3.30 3.56

α

eA 0.630 0.650 0.670 16.00 16.51 17.02

S - - 0.090 - - 2.29

Dimensions in inches Dimensions in mm

Min Nom Max Min Nom Max

0° - 15° 0° - 15°

Notes:

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

2. Dimension E1 does not include resin fins.

3. Dimension S includes end flash.

(December, 2001, Version 1.0) 12 AMIC Technology, Inc.

A276308A

Package Information
PLCC 32L Outline Dimension unit: inches/mm

13

HD

D

5

14

20

21

A

b

e

b1

GD

A1 A2

y

D

4

1

E

HE

32

30

29

c

L

θ

GE

Symbol

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°

Dimensions in inches Dimensions in mm

Min Nom Max Min Nom Max

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

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.

(December, 2001, Version 1.0) 13 AMIC Technology, Inc.