Z80181 Zilog., Z80181 Datasheet - Page 52

• Manufacturer Part Number: Z80181
• Description: SMART ACCESS CONTROLLER (SAC)
• Manufacturer: Zilog.

Zilog
AC CHARACTERISTICS (Continued)
Z180 MPU Timing
2-52
Data /MREQ,
/INTSCC [4]
/Data IN [1]
/MREQ [2]
/BUSREQ
/RD, /WR,
/RFSH [2]
/BUSACK
/IORQ [1]
Address
/M1 [1]
/IORQ
/HALT
/INTI
/NMI
Ø
Notes:
[1] During /INT0 acknowledge cycle
[2] During refresh cycle
30
33
(/INT0 Acknowledge Cycle, Refresh Cycle, BUS RELEASE Mode
31
32
34
HALT Mode, SLEEP Mode, SYSTEM STOP Mode)
40
42
[3] Output buffer is off at this point
[4] Refer to Table C, parameter 7
38
Figure 61. CPU Timing
35
37
C7
[3]
33
34
29
39
36
15
37
42
43
16
S
MART
A
CCESS
C
DS971800500
ONTROLLER
Z80181
SAC
™