W78C438C_06 Datasheet, PDF (17/22 Pages) Winbond – 8-BIT MICROCONTROLLER

7.2 Data Memory Read/Write Cycle
W78C438C
XTAL1
S4 S5
S6 S7 S8 S9
S10 S11 S12 S1 S2 S3
PSEN
AP7<3:0>
addr <19:16> out
(When bit7 of EPMA is 0.)
AP6<7:0>
DPH or HB SFR out
PGM address
AP5<7:0>
DPL or Ri out
PGM address
RD
DP4<7:0>
WR
DP4<7:0>
T_ARL
addr.
T_AWL
addr.
T_DWL
T_RS
T_RDV
T_WS
T_RDQ
data
addr.
DATA OUT
T_WDQ
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Publication Release Date: December 4, 2006
Revision A6