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PIC18F2220 Datasheet, PDF (264/388 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
ADDWFC
ADD W and Carry bit to f
Syntax:
[ label ] ADDWFC f [,d [,a]]
Operands:
0 ⤠f ⤠255
d â [0,1]
a â [0,1]
Operation:
(W) + (f) + (C) â dest
Status Affected: N, OV, C, DC, Z
Encoding:
0010 00da ffff ffff
Description:
Add W, the Carry flag and data
memory location âfâ. If âdâ is â0â, the
result is placed in W. If âdâ is â1â, the
result is placed in data memory loca-
tion âfâ. If âaâ is â0â, the Access Bank
will be selected. If âaâ is â1â, the BSR
will not be overridden.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register âfâ
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 â W
N, Z
0000 1011 kkkk kkkk
The contents of W are ANDed with
the 8-bit literal âkâ. The result is
placed in W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read literal
âkâ
Q3
Process
Data
Q4
Write to W
Example:
ANDLW
Before Instruction
W
= 0xA3
After Instruction
W
= 0x03
0x5F
DS39599C-page 262
 2003 Microchip Technology Inc.
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