M38027E8SP Datasheet, PDF (49/51 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3802 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(4) Timing Diagram in Memory Expansion Mode and Microprocessor Mode (b)
RD,WR
AD15–AD8
AD7–AD0
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
tv(RD-AH)
tv(WR-AH)
tv(RD-AL)
tv(WR-AL)
ONW
tsu(ONW-RD)
tsu(ONW-WR)
0.8 VCC
0.2 VCC
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)
49