Datasheet

PIC16F882/883/884/886/887
DS41291G-page 242  2006-2012 Microchip Technology Inc.
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
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 register ‘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
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
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 register ‘f’.
Register fC
Register fC
SLEEP Enter Sleep mode
Syntax: [ label ] SLEEP
Operands: None
Operation: 00h  WDT,
0  WDT prescaler,
1  TO
,
0  PD
Status Affected: TO, PD
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.
SUBLW Subtract W from literal
Syntax: [ label ] SUBLW k
Operands: 0 k 255
Operation: k - (W) W)
Status Affected: C, DC, Z
Description: The W register is subtracted (2’s
complement method) from the
eight-bit literal ‘k’. The result is
placed in the W register.
SUBWF Subtract W from f
Syntax: [ label ] SUBWF f,d
Operands: 0 f 127
d  [0,1]
Operation: (f) - (W) destination)
Status Affected: C, DC, Z
Description: Subtract (2’s complement method)
W register from register ‘f’. If ‘d’ is
‘0’, the result is stored in the W
register. If ‘d’ is ‘1’, the result is
stored back in register ‘f’.
C = 0 W  k
C = 1 W  k
DC = 0 W<3:0>  k<3:0>
DC = 1 W<3:0>  k<3:0>
C = 0 W  f
C = 1 W  f
DC = 0 W<3:0>  f<3:0>
DC = 1 W<3:0>  f<3:0>