PIC16F8X_13 Datasheet, PDF (64/128 Pages) Microchip Technology – 18-pin Flash/EEPROM 8-Bit Microcontrollers

PIC16F8X
IORWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Inclusive OR W with f
[ label ] IORWF f,d
0  f  127
d  [0,1]
(W) .OR. (f)  (destination)
Z
00 0100 dfff ffff
Inclusive OR the W register with regis-
ter 'f'. If 'd' is 0 the result is placed in the
W register. If 'd' is 1 the result is placed
back in register 'f'.
1
1
Q1 Q2 Q3
Q4
Decode
Read
register
'f'
Process Write to
data destination
Example
IORWF
RESULT, 0
Before Instruction
RESULT =
W
=
After Instruction
RESULT =
W
=
Z
=
0x13
0x91
0x13
0x93
1
MOVF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Move f
[ label ] MOVF f,d
0  f  127
d  [0,1]
(f)  (destination)
Z
00 1000 dfff ffff
The contents of register f is moved to a
destination dependant upon the status
of d. If d = 0, destination is W register. If
d = 1, the destination is file register f
itself. d = 1 is useful to test a file regis-
ter since status flag Z is affected.
1
1
Q1 Q2 Q3
Q4
Decode
Read
register
'f'
Process Write to
data destination
Example
MOVF FSR, 0
After Instruction
W = value in FSR register
Z =1
MOVLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Move Literal to W
[ label ] MOVLW k
0  k  255
k  (W)
None
11 00xx kkkk kkkk
The eight bit literal 'k' is loaded into W
register. The don’t cares will assemble
as 0’s.
1
1
Q1
Q2
Q3
Q4
Decode Read Process Write to
literal 'k' data
W
Example
MOVLW 0x5A
After Instruction
W = 0x5A
MOVWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Move W to f
[ label ] MOVWF f
0  f  127
(W)  (f)
None
00 0000 1fff ffff
Move data from W register to register
'f'.
1
1
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process Write
data register 'f'
Example
MOVWF OPTION_REG
Before Instruction
OPTION =
W
=
After Instruction
OPTION =
W
=
0xFF
0x4F
0x4F
0x4F
DS30430D-page 64
 1996-2013 Microchip Technology Inc.