4509 Datasheet, PDF (89/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
OP0A (Output port P0 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1
0
0
0
1
0
0
0
0
0
2
2
2
0 ₁₆
1
1
–
Skip condition
–
Operation: (P0) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P0.
OP1A (Output port P1 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
1000100001
221
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (P1) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P1.
OP2A (Output port P2 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
1000100010
222
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (P21, P20) ← (A1, A0)
Grouping: Input/Output operation
Description: Outputs the contents of the low-order 2 bits
(A1, A0) of register A to port P2.
OP3A (Output port P3 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
1000100011
223
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (P31, P30) ← (A1, A0)
Grouping: Input/Output operation
Description: Outputs the contents of the low-order 2 bits
(A1, A0) of register A to port P3.
Rev.1.02 2006.12.22 page 89 of 140
REJ03B0147-0102