
2002 Microchip Technology Inc.
Preliminary
DS30485A-page 237
PIC18FXX39
MOVLW
Move literal to W
Syntax:
[ label ] MOVLW k
Operands:
0
≤ k ≤ 255
Operation:
k
→ W
Status Affected:
None
Encoding:
0000
1110
kkkk
Description:
The eight-bit literal 'k' is loaded
into W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal 'k'
Process
Data
Write to W
Example:
MOVLW
0x5A
After Instruction
W
=
0x5A
MOVWF
Move W to f
Syntax:
[ label ] MOVWF
f [,a]
Operands:
0
≤ f ≤ 255
a
∈ [0,1]
Operation:
(W)
→ f
Status Affected:
None
Encoding:
0110
111a
ffff
Description:
Move data from W to register 'f'.
Location 'f' can be anywhere in the
256 byte bank. If ‘a’ is 0, the
Access Bank will be selected, over-
riding the BSR value. If ‘a’ = 1, then
the bank will be selected as per the
BSR value (default).
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
Data
Write
register 'f'
Example:
MOVWF
REG, 0
Before Instruction
W
=
0x4F
REG
=
0xFF
After Instruction
W
=
0x4F
REG
=
0x4F