DS80C310_1 Datasheet, PDF (17/21 Pages) Dallas Semiconductor – High-Speed Micro

DS80C310
DATA MEMORY WRITE WITH STRETCH=2
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
A8–A15
A8–A15
MOVX Data
A8–A15
FOUR CYCLE DATA MEMORY WRITE
STRETCH VALUE=2
A0–A7
D0–D7
A8–A15
EXTERNAL CLOCK DRIVE
t_CLCL
XTAL1
t_CHCL
t_CLCX
t_CHCX
t_CLCH
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