AT28BV256 datasheet(2/16 Pages) ATMEL

Part #	AT28BV256

Description	256K (32K x 8) Battery-Voltage Parallel EEPROMs

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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2

0273J–PEEPR–10/06

AT28BV256

2.

Pin Configurations

2.1

32-lead PLCC – Top View

Note:

1. PLCC package pins 1 and 17 are Don’t Connect.

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

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

2.2

28-lead PDIP, SOIC – Top View

2.3

28-lead 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

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

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

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