W78LE51 Datasheet, PDF (16/21 Pages) Winbond – 8-BIT MTP MICROCONTROLLER

Preliminary W78LE51
Timing Waveforms, continued
Data Read Cycle
XTAL1
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3
ALE
PSEN
PORT 2
PORT 0
RD
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
TDWD
TDAW
TDWR
Port Access Cycle
S5
XTAL1
S6
S1
ALE
PORT
INPUT
SAMPLE
TPDS
T PDH
T PDA
DATA OUT
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