參數(shù)資料
型號: AT90LS8535-4AI
廠商: Atmel
文件頁數(shù): 100/127頁
文件大小: 0K
描述: IC MCU 8K 4MHZ A/D LV IT 44TQFP
標準包裝: 160
系列: AVR® 90LS
核心處理器: AVR
芯體尺寸: 8-位
速度: 4MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(4K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤
PIC16C71X
DS30272A-page 74
1997 Microchip Technology Inc.
CLRF
Clear f
Syntax:
[
label] CLRF
f
Operands:
0
≤ f ≤ 127
Operation:
00h
→ (f)
1
→ Z
Status Affected:
Z
Encoding:
00
0001
1fff
ffff
Description:
The contents of register 'f' are cleared
and the Z bit is set.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write
register 'f'
Example
CLRF
FLAG_REG
Before Instruction
FLAG_REG
=
0x5A
After Instruction
FLAG_REG
=
0x00
Z
=
1
CLRW
Clear W
Syntax:
[
label ] CLRW
Operands:
None
Operation:
00h
→ (W)
1
→ Z
Status Affected:
Z
Encoding:
00
0001
0xxx
xxxx
Description:
W register is cleared. Zero bit (Z) is
set.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
NOP
Process
data
Write to
W
Example
CLRW
Before Instruction
W
=
0x5A
After Instruction
W
=
0x00
Z
=
1
CLRWDT
Clear Watchdog Timer
Syntax:
[
label ] CLRWDT
Operands:
None
Operation:
00h
→ WDT
0
→ WDT prescaler,
1
→ TO
1
→ PD
Status Affected:
TO, PD
Encoding:
00
0000
0110
0100
Description:
CLRWDT
instruction resets the Watch-
dog Timer. It also resets the prescaler
of the WDT. Status bits TO and PD
are set.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
NOP
Process
data
Clear
WDT
Counter
Example
CLRWDT
Before Instruction
WDT counter =
?
After Instruction
WDT counter =
0x00
WDT prescaler=
0
TO
=
1
PD
=
1
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