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

White Electronic Designs

WMS512K8BV-XXXE

December 1999

Rev. 3

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

AC CHARACTERISTICS

Parameter Read Cycle

Symbol

-15

-17

-20

Unit

Min

Max

Min

Max

Min

Max

Read Cycle Time

15

17

20

ns

Address Access Time

15

17

20

ns

Output Hold from Address Change

000

ns

Chip Select Access Time

15

17

20

ns

Output Enable to Output Valid

7

8

10

ns

Chip Select to Output in Low Z

222

ns

Output Enable to Output in Low Z

000

ns

Chip Disable to Output in High Z

7

8

10

ns

Output Disable to Output in High Z

7

8

10

ns

1. This parameter is guaranteed by design but not tested.

AC CHARACTERISTICS

Parameter Write Cycle

Symbol

-15

-17

-20

Unit

Min

Max

Min

Max

Min

Max

Write Cycle Time

15

17

20

ns

Chip Select to End of Write

10

12

14

ns

Address Valid to End of Write

10

12

14

ns

Data Valid to End of Write

8

9

10

ns

Write Pulse Width

12

14

14

ns

Address Setup Time

000

ns

Address Hold Time

000

ns

Output Active from End of Write

233

ns

Write Enable to Output in High Z

889

ns

Data Hold Time

000

ns

1. This parameter is guaranteed by design but not tested.

AC TEST CIRCUIT

AC TEST CONDITIONS

Current Source

Current Source

D.U.T.

(Bipolar Supply)

Parameter

Typ

Unit

Input Pulse Levels

V

Input Rise and Fall

5

ns

Input and Output Reference Level

1.5

V

Output Timing Reference Level

1.5

V

Notes:

Tester Impedance Z0 = 75Ω.

ATE tester includes jig capacitance.