W77L32 Datasheet, PDF (41/76 Pages) Winbond – 8-BIT MICROCONTROLLER

W77L32/W77L032A/W77M032A
Last Cycle
of Previous
Instruction
First
Second
Third
Next Instruction
Machine Cycle Machine Cycle Machine Cycle ^{Machine Cycle}
MOVX instruction cycle
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
CLK
ALE
PSEN
WR
PORT 0
A0-A7
D0-D7 A0-A7
D0-D7 A0-A7
D0-D7
A0-A7
D0-D7
MOVX Inst.
Address
Next Inst.
Address
MOVX Data
Address
MOVX Inst.
Next Inst.
Read
PORT 2
A15-A8
A15-A8
MOVX Data out
A15-A8
A15-A8
Figure 9: Dada Memory Write with Stretch Value = 1
Last Cycle
of Previous
Instruction
First
Machine Cycle
Second
Machine Cycle
Third
Machine Cycle
Fourth
Next
Machine Cycle ^Instruction
Machine Cycle
MOVX instruction cycle
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
CLK
ALE
PSEN
WR
PORT 0
A0-A7
D0-D7 A0-A7
D0-D7 A0-A7
D0-D7
A0-A7
D0-D7
PORT 2
MOVX Inst.
Address
Next Inst.
Address
MOVX Data
Address
MOVX Inst.
Next Inst.
Read
A15-A8
A15-A8
MOVX Data out
A15-A8
A15-A8
Figure 10: Dada Memory Write with Stretch Value = 2
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Publication Release Date: April 17, 2007
Revision A6