Z80181 Datasheet, PDF (50/74 Pages) Zilog, Inc. – SMART ACCESS CONTROLLER (SAC™)

Zilog
AC CHARACTERISTICS
Z180 MPU Timing
Z80181
SMART ACCESS CONTROLLER SAC^™
Figures 60-68 show the timing for the Z181 MPU and the referenced parameters appear in Table A.
T1
4
Ø
2
6
Address
/ROMCS
/RAMCS
/WAIT
/MREQ
/RD
/M1
10
ST
/IORQ ^"H"
/WR
T2
5
3
1
70
20
19
7
8
9
17
Data In
/RESET
61
62
67
66
Tw
T3
T1
70
19
20
11
12
13
14
18
15
16
61
62
67
66
Figure 60a. Opcode Fetch Cycle
2-50
DS971800500