Z8S180 Zilog., Z8S180 Datasheet - Page 280

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

264
Table 51. Bus and Control Signal Condition in Each Machine Cycle (Continued)
UM005001-ZMP0400
Instruction
LD (mn),A
LD A,I
LD A,R
LD I,A
LD R,A
LD ww, mn
LD IX,mn
LD IY,mn
*4 In the case of R1 and Z MASK, interrupt request is not sampled.
Z8018x Family
MPU User Manual
*4
Machine
Cycle
MC1
MC2
MC3
MC4
MC5
MC1
MC2
MC1
MC2
MC3
MC1
MC2
MC3
MC4
States
T1T2T3 1st Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
Ti
T1T2T3 mn
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 1st Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 1st operand
T1T2T3 2nd operand
Address
Address
Address
Address
*
Address
Address
Address
Address
Address
Address
Address
Address
Address
Data
1st Op
Code
n
m
Z
A
1st Op
Code
2nd Op
Code
1st Op
Code
n
m
1st Op
Code
2nd Op
Code
n
m
RD WR MREQ
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
0
1
1
1
1
1
1
1
1
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
IORQ M1 HALT ST
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
0
0
0
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
0
1
0
1
1
0
1
1
1