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¡ SemiconductorMSM80C154S/83C154S
t
LHLL
t
WHLH
t
LLDV
t
LLWL
t
RLRH
t
AVLL
t
LLAX
t
RLDV
t
RHDX
t
RHDZ
t
AVWL
t
AVDV
PCH A8 to A15 PCH P2.0 to P2.7 DATA A8 to A15 DPHor A8 to A15 PCH
A0 to A7
PCL
A0 to A7
Rr or DPL
A0 to A7
PCL
INSTR
IN
ALE
PSEN
RD
PORT 0
PORT 2
DATA IN
t
AZRL
t
LHLL
t
WHLH
t
LLWL
t
WLWH
t
AVLL
t
LLAX
t
QVWH
t
WHQX
t
AVWL
A8 to A15 PCH P2.0 to P2.7 DATA A8 to A15 DPHor A8 to A15 PCH
A0 to A7
PCL
A0 to A7
Rr or DPL
A0 to A7
PCL
INSTR
IN
ALE
PSEN
WR
PORT 0
PORT 2
DATA (ACC)
A8 to A15
PCH
t
QVWX
(4) External data memory read cycle
(5) External data memory write cycle