參數(shù)資料
型號: PIC16F84
廠商: Microchip Technology Inc.
英文描述: 18-pin Flash/EEPROM 8-Bit Microcontrollers
中文描述: 18引腳閃存/ EEPROM的8位微控制器
文件頁數(shù): 60/124頁
文件大?。?/td> 1060K
代理商: PIC16F84
PIC16F8X
DS30430C-page 60
1998 Microchip Technology Inc.
CLRF
Syntax:
Operands:
Operation:
Clear f
[label CLRF f
0
f
127
00h
(f)
1
Z
Z
Status Affected:
Encoding:
Description:
00
0001
1fff
ffff
The contents of register ’f’ are cleared
and the Z bit is set.
1
1
Q1
Q2
Words:
Cycles:
Q Cycle Activity:
Q3
Q4
Decode
Read
register
’f’
Process
data
Write
register ’f’
Example
CLRF
FLAG_REG
Before Instruction
FLAG_REG
=
0x5A
After Instruction
FLAG_REG
Z
=
=
0x00
1
CLRW
Syntax:
Operands:
Operation:
Clear W
[ label CLRW
None
00h
(W)
1
Z
Z
Status Affected:
Encoding:
Description:
00
0001
0xxx
xxxx
W register is cleared. Zero bit (Z) is
set.
1
1
Q1
Q2
Words:
Cycles:
Q Cycle Activity:
Q3
Q4
Decode
No-Opera
tion
Process
data
Write to
W
Example
CLRW
Before Instruction
W
=
0x5A
After Instruction
W
Z
=
=
0x00
1
CLRWDT
Syntax:
Operands:
Operation:
Clear Watchdog Timer
[ label CLRWDT
None
00h
WDT
0
WDT prescaler,
1
TO
1
PD
TO, PD
Status Affected:
Encoding:
Description:
00
0000
0110
0100
CLRWDT
instruction resets the Watch-
dog Timer. It also resets the prescaler
of the WDT. Status bits TO and PD are
set.
1
1
Q1
Q2
Words:
Cycles:
Q Cycle Activity:
Q3
Q4
Decode
No-Opera
tion
Process
data
Clear
WDT
Counter
Example
CLRWDT
Before Instruction
WDT counter =
After Instruction
WDT counter =
WDT prescaler=
TO
PD
0x00
0
1
1
=
=
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