Z84C90 Datasheet, PDF (25/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer

Z84C90
KIO Serial/Parallel Counter Timer
20
1
Clock
2
3
5
4
A0–A3
CS
6
7
IORQ
6
7
RD
9
D0–D7
8
15
8
10
10 _{Read Cycle}
RD
D0–D7
WT/RDY
Wait Mode
48
WT/RDY
Ready Mode
12
47
48
11 Write Cycle
49
Figure 10. I/O Read/Write Timing (M1 = 1)
PS011802-0902