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

White Electronic Designs

WS1M8-XCX

November 2002

Rev. 2

PRELIMINARY

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

I

Current Source

D.U.T.

C

= 50 pf

eff

I

OL

V

1.5V

(Bipolar Supply)

Z

Current Source

OH

AC CHARACTERISTICS

Parameter

Write Cycle

Symbol

-70

-85

-100

Units

Min

Max

Min

Max

Min

Max

Write Cycle Time

70

85

100

ns

Chip Select to End of Write

60

75

80

ns

Address Valid to End of Write

60

75

80

ns

Data Valid to End of Write

30

30

40

ns

Write Pulse Width

50

50

60

ns

Address Setup Time

000

ns

Address Hold Time

555

ns

Output Active from End of Write

555

ns

Write Enable to Output in High Z

25

25

35

ns

Data Hold Time

000

ns

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

AC CHARACTERISTICS

Parameter

Read Cycle

Symbol

-70

-85

-100

Units

Min

Max

Min

Max

Min

Max

Read Cycle Time

70

85

100

ns

Address Access Time

70

85

100

ns

Output Hold from Address Change

000

ns

Chip Select Access Time

70

85

100

ns

Chip Select to Output in Low Z

555

ns

Chip Disable to Output in High Z

25

25

25

ns

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

AC TEST CIRCUIT

Notes:

Tester Impedance Z0 = 75Ω.

ATE tester includes jig capacitance.

AC Test Conditions

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