4552 Datasheet, PDF (87/145 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4552 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
RAR (Rotate Accumulator Right)
Instruction
code
D9
D0
Number of Number of Flag CY
0000011101
01D
words
cycles
2
16
1
1
0/1
Skip condition
–
Operation:
→ CY → A3A2A1A0
Grouping: Arithmetic operation
Description: Rotates 1 bit of the contents of register A in-
cluding the contents of carry flag CY to the
right.
RB j (Reset Bit)
Instruction
code
D9
D0
Number of Number of Flag CY
00010011j
j
2
0
4
C
+j ₁₆
words
1
cycles
1
–
Skip condition
–
Operation:
(Mj(DP)) ← 0
j = 0 to 3
Grouping: Bit operation
Description: Clears (0) the contents of bit j (bit specified
by the value j in the immediate field) of
M(DP).
RC (Reset Carry flag)
Instruction
code
D9
D0
Number of Number of Flag CY
0000000110
006
words
cycles
2
16
1
1
0
Skip condition
–
Operation: (CY) ← 0
Grouping: Arithmetic operation
Description: Clears (0) to carry flag CY.
RCP (Reset Port C)
Instruction
code
D9
D0
Number of Number of Flag CY
1010001100
28C
words
cycles
2
16
1
1
0
Skip condition
–
Operation: (C) ← 0
Grouping: Input/Output operation
Description: Clears (0) to carry flag CY.
Rev.3.02 Dec 22, 2006 page 87 of 142
REJ03B0023-0302