Z8S180 Zilog., Z8S180 Datasheet - Page 281

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

Table 51. Bus and Control Signal Condition in Each Machine Cycle (Continued)
Instruction
LD HL, (mn)
LD ww,(mn)
LD IX,(mn)
LD IY,(mn)
Machine
Cycle
MC1
MC2
MC3
MC4
MC5
MC1
MC2
MC3
MC4
MC5
MC6
MC1
MC2
MC3
MC4
MC5
MC6
States
T1T2T3 1st Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
T1T2T3 mn
T1T2T3 mn+1
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
T1T2T3 mn
T1T2T3 mn+ 1
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
T1T2T3 mn
T1T2T3 mn+1
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Data
1st Op
Code
n
m
DATA
DATA
1st Op
Code
2nd Op
Code
n
m
DATA
DATA
1st Op
Code
2nd Op
Code
n
m
DATA
DATA
RD WR MREQ
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MPU User Manual
IORQ M1 HALT ST
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
UM005001-ZMP0400
Z8018x Family
0
1
1
1
1
0
0
1
1
1
1
0
0
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
1
0
1
1
1
1
1
0
1
1
1
1
1
265