HT49R50 Holtek Semiconductor Inc, HT49R50 Datasheet - Page 45

• Manufacturer Part Number: HT49R50
• Description: 8-Bit Microcontroller
• Manufacturer: Holtek Semiconductor Inc

RRA [m]
Description
Operation
Affected flag(s)
RRC [m]
Description
Operation
Affected flag(s)
RRCA [m]
Description
Operation
Affected flag(s)
Rotate right-place result in the accumulator
Data in the specified data memory is rotated one bit right with bit 0 rotated
into bit 7, leaving the rotated result in the accumulator. The contents of the
data memory remain unchanged.
ACC.(i) ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
ACC.7 ¬ [m].0
Rotate data memory right through carry
The contents of the specified data memory and the carry flag are together ro-
tated one bit right. Bit 0 replaces the carry bit; the original carry flag is ro-
tated into the bit 7 position.
[m].i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
[m].7 ¬ C
C ¬ [m].0
Rotate right through carry-place result in the accumulator
Data of the specified data memory and the carry flag are rotated one bit
right. Bit 0 replaces the carry bit and the original carry flag is rotated into
the bit 7 position. The rotated result is stored in the accumulator. The con-
tents of the data memory remain unchanged.
ACC.i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
ACC.7 ¬ C
C ¬ [m].0
TC2
TC2
TC2
¾
¾
¾
TC1
TC1
TC1
¾
¾
¾
TO
TO
TO
¾
¾
¾
PD
PD
PD
¾
¾
¾
45
OV
OV
OV
¾
¾
¾
¾
¾
¾
Z
Z
Z
AC
AC
AC
¾
¾
¾
¾
C
C
C
Ö
Ö
August 18, 1999
HT49C50