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PIC18F2220_07 Datasheet, PDF (263/386 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology | |||
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PIC18F2220/2320/4220/4320
24.2 Instruction Set
ADDLW
ADD literal to W
Syntax:
[ label ] ADDLW k
Operands:
0 ⤠k ⤠255
Operation:
(W) + k â 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 âkâ and the result is
placed in W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal âkâ
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 â [0,1]
a â [0,1]
(W) + (f) â dest
N, OV, C, DC, Z
f [,d [,a]]
0010 01da ffff ffff
Add W to register âfâ. If âdâ is â0â, the
result is stored in W. If âdâ is â1â, the
result is stored back in register âfâ
(default). If âaâ is â0â, the Access
Bank will be selected. If âaâ is â1â,
the BSR is used.
1
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register âfâ
Q3
Process
Data
Q4
Write to
destination
Example:
ADDWF
Before Instruction
W
REG
= 0x17
= 0xC2
After Instruction
W
REG
= 0xD9
= 0xC2
REG, W
© 2007 Microchip Technology Inc.
DS39599F-page 261
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