W78C58 Datasheet, PDF (17/22 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C58
Timing Waveforms, continued
Data Write Cycle
S4 S5 S6 S1 S2 S3 S4 S5
XTAL1
ALE
PSEN
P0
P2
WR
DPL or
RI out
Data
Tdaw
DPH or P2 SFR out
Tdad
Tdwr
Tdwd
Port Access Cycle
XTAL1
ALE
PORT
Input
Sample
Output
Clock
Figure 8. External Data Memory Write Cycle
S5
S6
S1
Tpds
Data In
Tpdh
Tpda
Data Out
Figure 9. Port Access Cycle
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Publication Release Date: December 1997
Revision A5