PIC18F2331-E/ML MICROCHIP [Microchip Technology], PIC18F2331-E/ML Datasheet - Page 307

• Manufacturer Part Number: PIC18F2331-E/ML
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

LFSR
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2010 Microchip Technology Inc.
Q Cycle Activity:
After Instruction
Decode
Decode
FSR2H
FSR2L
Q1
Read literal
Read literal
Load FSR
[ label ]
0  f  2
0  k  4095
k  FSRf
None
The 12-bit literal ‘k’ is loaded into the
file select register pointed to by ‘f’.
2
2
‘k’ MSB
LFSR 2, 0x3AB
‘k’ LSB
1110
1111
Q2
=
=
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
PIC18F2331/2431/4331/4431
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  f  255
d  [0,1]
a  [0,1]
f  dest
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’. Location, ‘f’,
can be anywhere 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.
1
1
MOVF
Read
0101
Q2
=
=
=
=
0x22
0xFF
0x22
0x22
REG, W
MOVF
00da
Process
Data
Q3
DS39616D-page 307
f [,d [,a]]
ffff
Write
Q4
W
ffff