Rainbow-electronics W78C52D Bedienungsanleitung PDF herunterladen (Seite 14)

Preliminary W78C52D

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Timing Waveforms, continued

Data Write Cycle

S2 S3S5 S6 S1S2 S3 S4S1S5 S6S4

XTAL1

ALE

PSEN

A8-A15

DATA OUT

PORT 2

PORT 0

A0-A7

WR

T

T

DAW

DAD

T

DWR

T

DWD

Port Access Cycle

XTAL1

ALE

S5 S6 S1

DATA OUT

T

T

PORT

INPUT

T

SAMPLE

PDA

PDHPDS

1 2 ... 9 10 11 12 13 14 15 16 17 18

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