Z8018x Family
MPU User Manual
21
Wait States (TW) are inserted as previously described for Op Code fetch
cycles. Figure 11 illustrates the read/write timing without Wait States
(Tw), while Figure 12 illustrates read/write timing with Wait States (TW).
Read Cycle
T2
Write Cycle
T2
T1
T3
T1
T3
T1
Phi
A0
–
A19
Memory address
Write data
Memory address
Read data
D0–D7
WAIT
MREQ
RD
WR
Figure 11. Memory Read/Write (without Wait State) Timing Diagram
UM005001-ZMP0400