PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 209

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

CLRF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Q Cycle Activity:
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
Q3
f [,a]
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
PIC18F1220/1320
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
Q2
No
TO,
PD
=
=
=
=
=
WDT,
WDT postscaler,
0000
?
0x00
0
1
1
Process
Data
Q3
DS39605C-page 207
0000
operation
Q4
No
0100