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7641

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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MITSUBISHI MICROCOMPUTERS

7641 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

5.0V

VCC

GND

RP

VIH

VIL

CE

VIH

VIL

WE

VIH

VIL

Inhibit read / write

tVCS

tPS

Fig. 118 VCC power up / power down timing

Inhibit read / write

tPS

Inhibit read / write

VIH

Address

VIL

VIH

CE

VIL

VIH

OE

VIL

WE

DATA

VIH

VIL

VOH

VOL

RP

VIH

VIL

HIGH-Z

tPS

Valid address

tRC

ta (AD)

ta (CE)

tOEH

tCLZ

ta (OE)

tOLZ

Valid output

AC electrical characteristics test condition

Input voltage : VIL = 0 V, VIH = 5.0 V

Input signal rising time, falling time : 10 ns

tDF(CE)

Timing measurement

Reference voltage : 1.5 V

Load circuit : 1TTL gate+

CL (100 pF )

tDF(OE)

or

tO H

1.3 V

1N914

3.3 kΩ

HIGH-Z

tPHZ

measurement pin

CL =100 pF

Fig. 119 AC wave for read operation and test condition

139

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