Datasheet

 1997-2013 Microchip Technology Inc. DS30561C-page 79
PIC12C67X
RETURN Return from Subroutine
Syntax: [
label ] RETURN
Operands: None
Operation: TOS  PC
Status Affected: None
Encoding:
00 0000 0000 1000
Description: Return from subroutine. The stack
is POPed and the top of the stack
(TOS) is loaded into the program
counter. This is a two cycle
instruction.
Words: 1
Cycles: 2
Example
RETURN
After Interrupt
PC = TOS
RLF Rotate Left f through Carry
Syntax: [
label ] RLF f,d
Operands: 0  f  127
d  [0,1]
Operation: See description below
Status Affected: C
Encoding:
00 1101 dfff ffff
Description: The contents of register 'f' are
rotated one bit to the left through
the Carry Flag. If 'd' is 0, the result
is placed in the W register. If 'd' is
1, the result is stored back in reg-
ister 'f'.
Words: 1
Cycles: 1
Example
RLF REG1,0
Before Instruction
REG1 = 1110 0110
C =0
After Instruction
REG1 = 1110 0110
W = 1100 1100
C =1
Register fC
RRF Rotate Right f through Carry
Syntax: [
label ] RRF f,d
Operands: 0  f  127
d  [0,1]
Operation: See description below
Status Affected: C
Encoding:
00 1100 dfff ffff
Description: The contents of register 'f' are
rotated one bit to the right through
the Carry Flag. If 'd' is 0, the result
is placed in the W register. If 'd' is
1, the result is placed back in reg-
ister 'f'.
Words: 1
Cycles: 1
Example
RRF
REG1,
0
Before Instruction
REG1 = 1110 0110
C =0
After Instruction
REG1 = 1110 0110
W = 0111 0011
C =0
SLEEP
Syntax: [
label ]
SLEEP
Operands: None
Operation: 00h  WDT,
0  WDT prescaler,
1  TO
,
0  PD
Status Affected: TO, PD
Encoding:
00 0000 0110 0011
Description: The power-down status bit, PD is
cleared. Time-out status bit, TO
is set. Watchdog Timer and its
prescaler are cleared.
The processor is put into SLEEP
mode with the oscillator stopped.
Words: 1
Cycles: 1
Example: SLEEP
Register fC