Datasheet

PIC16F631/677/685/687/689/690
DS40001262F-page 214  2005-2015 Microchip Technology Inc.
15.2 Instruction Descriptions
ADDLW Add literal and W
Syntax: [ label ] ADDLW k
Operands: 0  k  255
Operation: (W) + k  (W)
Status Affected: C, DC, Z
Description: The contents of the W register
are added to the 8-bit literal ‘k’
and the result is placed in the
W register.
ADDWF Add W and f
Syntax: [ label ] ADDWF f,d
Operands: 0  f  127
d 0,1
Operation: (W) + (f)  (destination)
Status Affected: C, DC, Z
Description: Add the contents of the W register
with 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’.
ANDLW AND literal with W
Syntax: [ label ] ANDLW k
Operands: 0  k  255
Operation: (W) .AND. (k)  (W)
Status Affected: Z
Description: The contents of W register are
AND’ed with the 8-bit literal ‘k’.
The result is placed in the W reg-
ister.
ANDWF AND W with f
Syntax: [ label ] ANDWF f,d
Operands: 0  f  127
d 0,1
Operation: (W) .AND. (f)  (destination)
Status Affected: Z
Description: AND the W register with 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’.
BCF Bit Clear f
Syntax: [ label ] BCF f,b
Operands: 0  f  127
0  b  7
Operation: 0  (f<b>)
Status Affected: None
Description: Bit ‘b’ in register ‘f’ is cleared.
BSF Bit Set f
Syntax: [ label ] BSF f,b
Operands: 0  f  127
0  b  7
Operation: 1  (f<b>)
Status Affected: None
Description: Bit ‘b’ in register ‘f’ is set.
BTFSC Bit Test f, Skip if Clear
Syntax: [ label ] BTFSC f,b
Operands: 0  f  127
0  b  7
Operation: skip if (f<b>) = 0
Status Affected: None
Description: If bit ‘b’ in register ‘f’ is ‘1’, the next
instruction is executed.
If bit ‘b’ in register ‘f’ is ‘0’, the next
instruction is discarded, and a NOP
is executed instead, making this a
2-cycle instruction.