W79E532/W79L532
Last Cycle
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Instruction
First
Second
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Machine Cycle Machine Cycle Machine Cycle
MOVX instruction cycle
Next Instruction
Machine 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 Data out
MOVX Inst.
Next Inst.
Read
A15-A8
A15-A8
A15-A8
PORT 2
A15-A8
Figure 9. Data Memory Write with Stretch Value = 1
Last Cycle
of Previous
Instruction
First
Machine Cycle
Second
Machine Cycle
Third
Machine Cycle
Next
Instruction
Machine Cycle
Machine Cycle
Fourth
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
MOVX Inst.
Address
Next Inst.
Address
MOVX Data
Address
MOVX Data out
MOVX Inst.
Next Inst.
Read
A15-A8
A15-A8
A15-A8
PORT 2
A15-A8
Figure 10. Data Memory Write with Stretch Value = 2
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Publication Release Date: November 21, 2005
Revision A5