PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 303

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

LFSR
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
2002 Microchip Technology Inc.
After Instruction
Decode
Decode
FSR2H
FSR2L
Q1
Read literal
Read literal
The 12-bit literal ’k’ is loaded into
Load FSR
[ label ]
0
0
k
None
the file select register pointed to
by ’f’.
2
2
LFSR 2, 0x3AB
’k’ MSB
’k’ LSB
1110
1111
Q2
=
=
f
k
FSRf
2
4095
0x03
0xAB
LFSR f,k
1110
0000
Process
Process
Data
Data
Q3
k
00ff
7
kkk
’k’ to FSRfL
Write literal
literal ’k’
MSB to
FSRfH
Write
Q4
k
kkkk
11
kkk
MOVF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
REG
W
REG
W
Q1
register ’f’
Move f
[ label ]
0
d
a
f
N, Z
The contents of register ’f’ are
moved to a destination dependent
upon the status of ’d’. If 'd' is 0, the
result is placed in W. If 'd' is 1, the
result is placed back in register 'f'
(default). Location 'f' can be any-
where in the 256 byte bank. If ’a’ is
0, the Access Bank will be
selected, overriding the BSR value.
If ‘a’ = 1, then the bank will be
selected as per the BSR value
(default).
1
1
MOVF
Read
0101
Q2
=
=
=
=
f
[0,1]
[0,1]
dest
PIC18FXX8
255
0x22
0xFF
0x22
0x22
REG, W
MOVF
00da
Process
Data
Q3
DS41159B-page 301
f [,d [,a]]
ffff
Write W
Q4
ffff