PIC18F2331 Datasheet, PDF (295/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
23.2 Instruction Set
ADDLW
ADD literal to W
Syntax:
[ label ] ADDLW k
Operands:
0 ≤ k ≤ 255
Operation:
(W) + k → W
Status Affected: N, OV, C, DC, Z
Encoding:
0000 1111 kkkk kkkk
Description:
The contents of W are added to the
8-bit literal ‘k’ and the result is
placed in W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal ‘k’
Process
Data
Write to W
Example:
ADDLW
Before Instruction
W = 0x10
After Instruction
W = 0x25
0x15
ADDWF
ADD W to f
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
[ 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’
(default). If ‘a’ is 0, the Access
Bank will be selected. If ‘a’ is 1, the
BSR is used.
1
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register ‘f’
Q3
Process
Data
Q4
Write to
destination
Example:
ADDWF
Before Instruction
W
REG
= 0x17
= 0xC2
After Instruction
W
REG
= 0xD9
= 0xC2
REG, W
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 293