Z8L180 ZILOG [Zilog, Inc.], Z8L180 Datasheet - Page 214

• Manufacturer Part Number: Z8L180
• Description: Z8018x Family MPU
• Manufacturer: ZILOG [Zilog, Inc.]

198
UM005001-ZMP0400
Z8018x Family
MPU User Manual
A19 – 0, D7– 0
MREQ, RD
W R, I ORQ
I NT0,1,2
BUSREQ
Data I N
BUSACK
MREQ
RF SH
I ORQ
P H I
H AL T
NMI
M1
Memory Read/Write Cycle timing is the sam as I/O Read/Write Cycle
except there are no automatica Wait States (TW), and MREQ is active
instead of IORQ.
Figure 82.
34
31
33
35
AC Timing Diagram 2
32
39
41
38
36
43
10
Out put B uf f e r Of f
34
40
30
35
37
42
38
44
28
15
14
16
29