PIC18F6620 Microchip, PIC18F6620 Datasheet - Page 285

• Manufacturer Part Number: PIC18F6620
• Description: Microcontroller
• Manufacturer: Microchip

LFSR
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Q Cycle Activity:
After Instruction
Decode
Decode
FSR2H
FSR2L
Q1
PIC18F6520/8520/6620/8620/6720/8720
Read literal
Read literal
Load FSR
[ label ]
0
0
k
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
=
=
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
Write literal
‘k’ MSB to
FSRfH
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
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
(default).
1
1
MOVF
Read
0101
Q2
=
=
=
=
f
[0,1]
[0,1]
dest
255
0x22
0xFF
0x22
0x22
REG, 0, 0
MOVF
00da
Process
Data
Q3
DS39609B-page 283
f [,d [,a]
ffff
Write W
Q4
ffff