Z8S180 Zilog., Z8S180 Datasheet - Page 272

• Manufacturer Part Number: Z8S180
• Description: ENHANCED Z180 MICROPROCESSOR
• Manufacturer: Zilog.

256
Table 51. Bus and Control Signal Condition in Each Machine Cycle (Continued)
UM005001-ZMP0400
Instruction
DJNZ j
(If Br 0)
DJNZ j
(If Br=0)
EI*3
EX DE, HL
EXX
EX AF, AF’
EX (SP), HL
*2 DMA,REFRESH, or BUS RELEASE cannot be executed after this state. (Request is ignored)
*3 Interrupt request is not sampled.
Z8018x Family
MPU User Manual
Machine
Cycle
MC1
MC2
MC3
MC4~M
C5
MC1
MC2
MC3
MC1
MC1
MC1
MC2
MC1
MC2
MC3
MC4
MC5
MC6
States
T1T2T3 1st Op Code
Ti*2
T1T2T3 1st operand
TiTi
T1T2T3 1st Op Code
Ti*1
T1T2T3 1st operand
T1T2T3 1st Op Code
T1T2T3 1st Op Code
T1T2T3 1st Op Code
Ti
T1T2T3 1st Op Code
T1T2T3 SP
T1T2T3 SP+1
Ti
T1T2T3 SP+1
T1T2T3 SP
Address
Address
*
Address
*
Address
*
Address
Address
Address
Address
*
Address
*
Data
1st Op
Code
Z
j-2
Z
1st Op
Code
Z
j-2
1st Op
Code
1st Op
Code
1st
Z
1st Op
Code
DATA
DATA
Z
H
L
Op Code
RD WR MREQ
0
1
0
1
0
1
0
0
0
0
1
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
0
1
0
1
0
0
0
0
1
0
0
0
1
0
0
IORQ M1 HALT ST
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
1
0
0
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
1
0
0
0
1
0
1
1
1
1
1