PIC16F639 Microchip Technology Inc., PIC16F639 Datasheet - Page 159

• Manufacturer Part Number: PIC16F639
• Description: 8/14-pin Flash-based, 8-bit Cmos Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

SUBWF
Syntax:
Operands:
Operation:
Status Affected: C, DC, Z
Description:
SWAPF
Syntax:
Operands:
Operation:
Status Affected:
Description:
© 2007 Microchip Technology Inc.
Subtract W from f
[ label ] SUBWF f,d
0
d
(f) - (W)
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
C = 1
DC = 0
DC = 1
Swap Nibbles in f
[ label ] SWAPF f,d
0
d
(f<3:0>)
(f<7:4>)
None
The upper and lower nibbles of
register ‘f’ are exchanged. If ‘d’ is
‘0’, the result is placed in the W
register. If ‘d’ is ‘1’, the result is
placed in register ‘f’.
f
[0,1]
f
[0,1]
127
127
destination)
W
W
W<3:0>
W<3:0>
(destination<7:4>),
(destination<3:0>)
f
f
f<3:0>
f<3:0>
PIC12F635/PIC16F636/639
XORLW
Syntax:
Operands:
Operation:
Status Affected:
Description:
XORWF
Syntax:
Operands:
Operation:
Status Affected:
Description:
(W) .XOR. (f)
Z
Exclusive OR W with f
[ label ] XORWF
0
d
Exclusive OR 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’.
Exclusive OR literal with W
[ label ] XORLW k
0
(W) .XOR. k
Z
The contents of the W register
are XOR’ed with the eight-bit
literal ‘k’. The result is placed in
the W register.
f
[0,1]
k
127
255
DS41232D-page 157
W)
destination)
f,d