2-23

WS57C45

INIT

ROW

DECODER

1 OF 64

CP

PROGRAMMABLE

ARRAY

MULTIPLEXER

8-BIT

EDGE-

TRIGGERED

REGISTER

PROGRAMMABLE

MULTIPLEXER

COLUMN

DECODER

1 OF 32

D

C

Q

CP

S

S

S

S

S

S

INIT

OE

CP

30 pF

(INCLUDING SCOPE

AND JIG

CAPACITANCE)

98

Ω

2.01 V

D.U.T.

3.0

0.0

1.5

1.5

TEST

POINTS

A.C. TESTING INPUT/OUTPUT WAVEFORM

AC READ TIMING DIAGRAM

BLOCK DIAGRAM

A.C. testing inputs are driven at 3.0 V for a logic “1” and 0.0 V

for a logic “0.” Timing measurements are made at 1.5 V for

input and output transitions in both directions.