DS80CH11 Datasheet, PDF (81/88 Pages) Dallas Semiconductor – System Energy Manager

DS80CH11
DATA MEMORY WRITE WITH STRETCH=1 Figure 13–4
Last Cycle of
Previous
Instruction
First
Machine
Cycle
Second
Machine
Cycle
MOVX Instruction
Third
Machine
Cycle
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
Next
Instruction
Machine Cycle
C1 C2 C3 C4
CLK
ALE
PSEN
WR
PORT 0
A0–A7
D0–D7
A0–A7
D0–D7
A0–A7
MOVX
Instruction
Address
MOVX
Instruction
Next Instr.
Address
Next
Instruction
Read
MOVX
Data
Address
PORT 2
A8–A15
A8–A15
D0–D7
MOVX Data
A8–A15
A0–A7
D0–D7
A8–A15
DATA MEMORY WRITE WITH STRETCH=2 Figure 13–5
Last Cycle
of Previous
Instruction
C1 C2 C3 C4
First
Machine
Cycle
Second
Machine
Cycle
Third
Machine
Cycle
MOVX Instruction
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
Fourth
Machine
Cycle
Next
Instruction
Machine
Cycle
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
PORT 2
MOVX
Next Instr.
Instruction
Address
Address _MOVX
Instruction
MOVX
Data
Next ^Address
Instruction
Read
MOVX Data
A8–A15
A8–A15
A8–A15
FOUR CYCLE DATA MEMORY WRITE
STRETCH VALUE=2
A0–A7 D0–D7
A8–A15
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