5962-8863404ZX datasheet(1/16 Pages) ATMEL

Part #	5962-8863404ZX

Description	256 (32K x 8) High Speed Parallel Parallel

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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1

Features

• Fast Read Access Time - 70 ns

• Automatic Page Write Operation

– Internal Address and Data Latches for 64 Bytes

– Internal Control Timer

• Fast Write Cycle Times

– Page Write Cycle Time: 3 ms or 10 ms Maximum

– 1 to 64-Byte Page Write Operation

• Low Power Dissipation

– 80 mA Active Current

– 3 mA Standby Current

• Hardware and Software Data Protection

• DATA Polling for End of Write Detection

• High Reliability CMOS Technology

– Endurance: 10

4 or 105 Cycles

– Data Retention: 10 Years

• Single 5V

± 10% Supply

• CMOS and TTL Compatible Inputs and Outputs

• JEDEC Approved Byte-Wide Pinout

• Full Military, Commercial, and Industrial Temperature Ranges

Description

The AT28HC256 is a high-performance Electrically Erasable and Programmable

Read Only Memory. Its 256K of memory is organized as 32,768 words by 8 bits. Man-

ufactured with Atmel’s advanced nonvolatile CMOS technology, the AT28HC256

256 (32K x 8)

High Speed

Parallel

EEPROMs

AT28HC256

Rev. 0007G–10/98

Pin Configurations

Pin Name

Function

A0 - A14

Addresses

CE

Chip Enable

OE

Output Enable

WE

Write Enable

I/O0 - I/O7

Data Inputs/Outputs

NC

No Connect

DC

Don’t Connect

TSOP

Top View

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

OE

A11

A9

A8

A13

WE

VCC

A14

A12

A7

A6

A5

A4

A3

A10

CE

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

A0

A1

A2

LCC, PLCC

Top View

Note: PLCC package pins 1 and

17 are DON’T CONNECT.

5

6

7

8

9

10

11

12

13

29

28

27

26

25

24

23

22

21

A6

A5

A4

A3

A2

A1

A0

NC

I/O0

A8

A9

A11

NC

OE

A10

CE

I/O7

I/O6

PGA

Top View

(continued)

CERDIP, PDIP, FLATPACK

Top View

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

A14

A12

A7

A6

A5

A4

A3

A2

A1

A0

I/O0

I/O1

I/O2

GND

VCC

WE

A13

A8

A9

A11

OE

A10

CE

I/O7

I/O6

I/O5

I/O4

I/O3

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