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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

WE512K16-XG4X

April 1999

Rev. 2

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

512Kx16 CMOS EEPROM MODULE

FEATURES

Access Time of 140, 150, 200ns

Packaging:

• 68 lead, 40mm Hermetic CQFP (Package 501)

Organized as 4 banks of 128Kx16

Write Endurance 10,000 Cycles

Data Retention Ten Years Minimum

Military Temperature Range

Low Power CMOS

Automatic Page Write Operation

Page Write Cycle Time: 10ms Max

Data Polling for End of Write Detection

Hardware and Software Data Protection

TTL Compatible Inputs and Outputs

5 Volt Power Supply

8 Built-in Decoupling Caps and Multiple Ground Pins for Low

Noise Operation

Weight - 20 grams typical

Block Diagram

128K x 8

128K x 8

128K x 8

128K x 8

OE#

WE#

128K x 8

128K x 8

128K x 8

128K x 8

can be active at one time.

FIGURE 1 – PIN CONFIGURATION

Top View

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

9

8

7

6

5

4

3

2

1 68 67 66 65 64 63 62 61

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

GND

NC

NC

INC

NC

NC

NC

NC

NC

GND

NC

NC

NC

NC

NC

NC

NC

NC

Pin Description

I/O0-15

Data Input/Output

A0-16

Address Inputs

WE#

Write Enable

CS1-4#

Chip Selects

OE#

Output Enable

+5.0V Power

GND

Ground

NC

Not Connected