Datasheet

 2010-2012 Microchip Technology Inc. DS41414D-page 387
PIC16(L)F1946/47
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’.
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 pres-
caler are cleared.
The processor is put into Sleep mode
with the oscillator stopped.
Register fC
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 com-
plement 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.
SUBWFB Subtract W from f with Borrow
Syntax:
SUBWFB f {,d}
Operands: 0  f  127
d  [0,1]
Operation: (f) – (W) – (B
) dest
Status Affected: C, DC, Z
Description: Subtract W and the BORROW flag
(CARRY) from register ‘f’ (2’s comple-
ment method). If ‘d’ is ‘0’, the result is
stored in W. 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>