PIC16LF876A-I Datasheet, PDF (164/234 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers

PIC16F87XA
RLF
Rotate Left f through Carry
Syntax:
Operands:
Operation:
Status Affected:
Description:
[ label ] RLF f,d
0  f  127
d  [0,1]
See description below
C
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’.
C
Register f
RETURN
Syntax:
Operands:
Operation:
Status Affected:
Description:
Return from Subroutine
[ label ] RETURN
None
TOS  PC
None
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.
RRF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Rotate Right f through Carry
[ label ] RRF f,d
0  f  127
d  [0,1]
See description below
C
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’.
C
Register f
SLEEP
Syntax:
Operands:
Operation:
Status Affected:
Description:
[ label ] SLEEP
None
00h  WDT,
0  WDT prescaler,
1  TO,
0  PD
TO, PD
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
Syntax:
Operands:
Operation:
Status
Affected:
Description:
Subtract W from f
[ label ] SUBWF f,d
0 f 127
d  [0,1]
(f) - (W) destination)
C, DC, Z
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’.
DS39582C-page 164
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