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8031/8051/8751
T12
Tl
T2
T3
T4 T5
T&
T7
T6
T9
Tl0
OSC
ALE
RD,
Wii
PORT 2
PORTO
Program Memory
Read
Cycle
ALE
PSEN
TRLRH
PORT 2
ADDRESS A15-AS
~TAYWL
TAYDY
TRLDY-
I+-
PORTO
INSTR
IN
IFLOAT)<
A7-
A
O
I
FLOAT
)<
DATA
IN
Data Memory Read Cycle
ALE
PSEN
TWLWH
PORT 2 ADDRESS
AIS-As
TAYWL
TQYWH
PORTO
(INSTR
IN
IFLOAT)<
A7-
A
O
DATA
OUT
Data Memory Write Cycle
7-13
TIl
T12
T1
T2
TRHDX-
r---TRHDZ
----
r--
I
FLOAT
TWHQX--!
OR
ADD
SFR
RESS OR
P2
RESS
LOAT
}@
ORF
ADDR
SFRP
ESSOR
2
ADDR
ESS
OAT OR
FL
AFN-01462A-13