M38002M4 Datasheet, PDF (116/173 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
3.1 Electrical characteristics
Timing Diagram in Memory Expansion Mode and Microprocessor Mode (2)
RD,WR
AD15–AD8
AD7–AD0
ONW
td(AH-RD)
td(AH-WR)
0.5 VCC
td(AL-RD)
td(AL-WR)
0.5 VCC
tWL(RD)
tWL(WR)
0.5 VCC
tsu(ONW-RD)
tsu(ONW-WR)
0.8 VCC
0.2 VCC
tv(RD-AH)
tv(WR-AH)
tv(RD-AL)
tv(WR-AL)
th(RD-ONW)
th(WR-ONW)
(At CPU reading)
RD
DB0–DB7
0.5 VCC
tWL(RD)
tSU(DB-RD)
0.8 VCC
0.2 VCC
th(RD-DB)
(At CPU writing)
WR
DB0–DB7
tWL(WR)
0.5 VCC
td(WR-DB)
0.5 VCC
tv(WR-DB)
Fig. 3.1.4 Timing diagram (in memory expansion mode and microprocessor mode) (2)
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3800 GROUP USER’S MANUAL