Zilog Z16C35 - Manual (Page 185)

Application Note
The Z180™ Interfaced with the SCC at MHZ
8
Z180 TO I/O INTERFACE
The Z180 I/O read/write cycle is similar to the Z80 CPU if
you clear the /IOC bit in the OMCR register to 0 (Figures 7 and 8). Table 5 shows the Z180 key parameters for an I/O
cycle.
Figure 7. Z180 I/O Read Cycle Timing (/IOC = 0)
29
13
11
Ø
Address
/IORQ
/RD
Data
T1 T2 T T3 T1
6
28
11
19
16 15
WA
Figure 8. Z180 I/O Write Cycle Timing
29
25
Ø
Address
/IORQ
/WR
Data
T1 T2 Tw T3 T1
6
25
11
22
27 23
26
21 24
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