PIC18F2220/2320/4220/4320
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:
(W) .AND. k → W
N, Z
Operation:
(W) + (f) + (C) → dest
0000
1011
kkkk
kkkk
Status Affected:
Encoding:
N, OV, C, DC, Z
Description:
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 loca-
tion ‘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
ANDLW
0x5F
Example:
Q Cycle Activity:
Q1
Before Instruction
Q2
Q3
Q4
W
=
0xA3
0x03
Decode
Read
register ‘f’
Process
Data
Write to
destination
After Instruction
W
=
ADDWFC
REG, W
Example:
Before Instruction
Carry bit =
1
REG
W
=
=
0x02
0x4D
After Instruction
Carry bit =
0
0x02
REG
=
W
=
0x50
DS39599C-page 262
2003 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
