PIC16F631/677/685/687/689/690
MOVWF
Move W to f
[ label ] MOVWF
0 ≤ f ≤ 127
(W) → (f)
MOVF
Move f
Syntax:
f
Syntax:
Operands:
[ label ] MOVF f,d
Operands:
Operation:
Status Affected:
Description:
0 ≤ f ≤ 127
d ∈ [0,1]
Operation:
(f) → (dest)
None
Status Affected:
Description:
Z
Move data from W register to
register ‘f’.
The contents of register ‘f’ is
moved to a destination dependent
upon the status of ‘d’. If d = 0,
destination is W register. If d = 1,
the destination is file register ‘f’
itself. d = 1is useful to test a file
register since status flag Z is
affected.
Words:
1
1
Cycles:
Example:
MOVW
F
OPTION
Before Instruction
OPTION = 0xFF
Words:
1
1
W
=
0x4F
After Instruction
Cycles:
Example:
OPTION = 0x4F
W
MOVF
FSR, 0
=
0x4F
After Instruction
W
=
value in FSR
register
Z
=
1
MOVLW
Syntax:
Move literal to W
NOP
No Operation
[ label ] MOVLW k
0 ≤ k ≤ 255
Syntax:
[ label ] NOP
Operands:
Operation:
Operands:
Operation:
Status Affected:
Description:
Words:
None
k → (W)
No operation
Status Affected: None
None
Description:
The eight-bit literal ‘k’ is loaded into
W register. The “don’t cares” will
assemble as ‘0’s.
No operation.
1
Cycles:
1
Words:
1
1
NOP
Example:
Cycles:
Example:
MOVLW
0x5A
After Instruction
W
=
0x5A
DS41262D-page 218
© 2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
