PIC18F2331_10 Datasheet, PDF (289/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
24.2 Instruction Set
ADDLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
ADD Literal to W
[ label ] ADDLW k
0  k  255
(W) + k  W
N, OV, C, DC, Z
0000 1111 kkkk kkkk
The contents of W are added to the
8-bit literal ‘k’ and the result is placed in
W.
1
1
Q2
Read
literal ‘k’
Q3
Process
Data
Q4
Write to
W
Example:
ADDLW
Before Instruction
W = 0x10
After Instruction
W = 0x25
0x15
ADDWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
ADD W to f
[ label ] ADDWF
0  f  255
d  [0,1]
a  [0,1]
(W) + (f)  dest
N, OV, C, DC, Z
f [,d [,a]]
0010 01da ffff ffff
Add W to register, ‘f’. If ‘d’ is ‘0’, the
result is stored in W. If ‘d’ is ‘1’, the
result is stored back in register, ‘f’. If ‘a’
is ‘0’, the Access Bank will be selected.
If ‘a’ is ‘1’, the BSR is used.
1
1
Q2
Read
register ‘f’
Q3
Process
Data
Q4
Write to
destination
Example:
ADDWF
Before Instruction
W
= 0x17
REG = 0xC2
After Instruction
W
=
REG =
0xD9
0xC2
REG, W
 2010 Microchip Technology Inc.
DS39616D-page 289