PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 295
![no-image](/images/no-image-200.jpg)
PIC18F258
Manufacturer Part Number
PIC18F258
Description
High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F258.pdf
(384 pages)
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CLRF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
2002 Microchip Technology Inc.
Before Instruction
After Instruction
Decode
FLAG_REG
FLAG_REG
Q1
register ’f’
Clear f
[label] CLRF
0
a
000h
1
Z
Clears the contents of the specified
register. 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
CLRF
Read
0110
Q2
=
=
f
[0,1]
Z
255
0x5A
0x00
f
101a
Process
FLAG_REG
Data
f [,a]
Q3
ffff
register ’f’
Write
Q4
ffff
CLRWDT
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
WDT Counter
WDT Counter
WDT Postscaler
TO
PD
Q1
operation
Clear Watchdog Timer
[ label ] CLRWDT
None
000h
000h
1
1
TO, PD
CLRWDT instruction resets the
Watchdog Timer. It also resets the
postscaler of the WDT. Status bits
TO and PD are set.
1
1
CLRWDT
0000
No
Q2
TO,
PD
PIC18FXX8
=
=
=
=
=
WDT,
WDT postscaler,
0000
?
0x00
0
1
1
Process
Data
Q3
DS41159B-page 293
0000
operation
No
Q4
0100
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