W78E54B Datasheet, PDF (17/21 Pages) Winbond – 8-BIT MICROCONTROLLER

Timing Waveforms, continued
Data Read Cycle
W78E54B
XTAL1
ALE
PSEN
PORT 2
PORT 0
RD
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3
A0-A7
T DAR
A8-A15
T DDA
DATA
T DDH, T DDZ
T DRD
Data Write Cycle
XTAL1
ALE
PSEN
PORT 2
PORT 0
WR
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3
A0-A7
A8-A15
DATA OUT
T_DAD
T _DWD
T _DAW
T _DWR
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Publication Release Date: December 2000
Revision A3