PIC18F2331 Datasheet, PDF (296/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
ADDWFC
ADD W and Carry bit to f
Syntax:
[ label ] ADDWFC f [,d [,a]]
Operands:
0 ≤ f ≤ 255
d ∈ [0,1]
a ∈ [0,1]
Operation:
(W) + (f) + (C) → dest
Status Affected: N, OV, C, DC, Z
Encoding:
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:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register 'f'
Q3
Process
Data
Q4
Write to
destination
Example:
ADDWFC
Before Instruction
Carry bit = 1
REG = 0x02
W
= 0x4D
After Instruction
Carry bit =
REG =
W
=
0
0x02
0x50
REG, W
ANDLW
AND literal with W
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
[ label ] ANDLW k
0 ≤ k ≤ 255
(W) .AND. k → W
N, Z
0000 1011 kkkk kkkk
The contents of W are ANDed with
the 8-bit literal ‘k’. The result is
placed in W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read literal
‘k’
Q3
Process
Data
Q4
Write to W
Example:
ANDLW
Before Instruction
W
= 0xA3
After Instruction
W
= 0x03
0x5F
DS39616B-page 294
Preliminary
 2003 Microchip Technology Inc.