W79E648 Datasheet, PDF (71/80 Pages) Winbond – Fast 8051 Compatible microcontroller with a redesigned Processor

Preliminary W79E648
17.3.4 Data Memory Read Cycle
ALE
PSEN
RD
PORT 0 INSTRUCTION
IN
PORT 2
t_LLDV
t_LLAX1
t_LLWL
t_AVLL
t_AVWL1
t_RLRH
t_RLDV
t_RLAZ
ADDRESS
A0-A7
t_AVDV1
t_AVDV2
ADDRESS A8-A15
t_WHLH
t_RHDZ
DATA
IN
t_RHDX
ADDRESS
A0-A7
17.3.5 Data Memory Write Cycle
ALE
PSEN
WR
PORT 0 _INSTRUCTION
IN
PORT 2
t_LLAX2
t_AVLL
t_LLWL
t_AVWL1
ADDRESS
A0-A7
t_WLWH
t_WHLH
t_QVWX
t_WHQX
DATA OUT
t _AVDV2
ADDRESS A8-A15
ADDRESS
A0-A7
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Publication Release Date: 05/31/2004
Revision A1