Z80180 Datasheet, PDF (213/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z8018x Family
MPU User Manual
197
Timing Diagrams
PH I
ADDRESS
O pcode Fetch Cycle
T₁
T₂
T_W
T₃
T₁
23
4
5
1
6
I/O W rite Cycle*
I/O Re ad Cycle *
T₂
T_W
T₃
T₁
W AIT
19 ²⁰ 19 ²⁰
7
M REQ
8
IO RQ
RD
9
WR
M1
12 11
7
11
13
28
9
22
14
29 11
13
11
25
26
ST
10
17
Data IN
Data OUT
62
RESET
63
18
15
16
23
24
15
21
16
27
62
63
68
67
67
68
Figure 81. AC Timing Diagram 1
UM005001-ZMP0400