PIC18F2331/2431/4331/4431
ADDWFC
ADD W and Carry bit to f
ANDLW
AND Literal with W
Syntax:
[ label ] ADDWFC
f [,d [,a]]
Syntax:
[ label ] ANDLW
0 k 255
k
Operands:
0 f 255
d [0,1]
a [0,1]
Operands:
Operation:
Status Affected:
Encoding:
Description:
(W) .AND. k W
N, Z
Operation:
(W) + (f) + (C) dest
0000
1011
kkkk
kkkk
Status Affected:
Encoding:
N, OV, C, DC, Z
The contents of W are ANDed with the
8-bit literal ‘k’. The result is placed in W.
0010
00da
ffff
ffff
Description:
Add W, the Carry flag and data memory
location, ‘f’. If ‘d’ is ‘0’, the result is placed
in W. If ‘d’ is ‘1’, the result is placed in
data memory location, ‘f’. If ‘a’ is ‘0’, the
Access Bank will be selected. If ‘a’ is ‘1’,
the BSR will not be overridden.
Words:
Cycles:
1
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read literal
‘k’
Process
Data
Write to
W
Words:
Cycles:
1
1
Example:
ANDLW
0x5F
Q Cycle Activity:
Q1
Q2
Q3
Q4
Before Instruction
W
=
0xA3
0x03
Decode
Read
register ‘f’
Process
Data
Write to
destination
After Instruction
W
=
Example:
ADDWFC
REG, W
Before Instruction
Carry bit =
1
REG
W
=
=
0x02
0x4D
After Instruction
Carry bit =
0
REG
W
=
=
0x02
0x50
DS39616D-page 290
2010 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
