參數(shù)資料
型號: AV80C51C-36D
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQFP44
封裝: 1.40 MM HEIGHT, QFP-44
文件頁數(shù): 95/170頁
文件大?。?/td> 4133K
代理商: AV80C51C-36D
30
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
Figure 8-5.
Watchdog Reset During Operation
8.3
Watchdog Timer
The Watchdog Timer is clocked from an on-chip oscillator, which runs at 128 kHz. See Figure 8-6. By controlling
the Watchdog Timer prescaler, the Watchdog Reset interval can be adjusted as shown in Table 8-2 on page 32.
The WDR – Watchdog Reset – instruction resets the Watchdog Timer. The Watchdog Timer is also reset when it is
disabled and when a device reset occurs. Ten different clock cycle periods can be selected to determine the reset
period. If the reset period expires without another Watchdog Reset, the ATtiny4/5/9/10 resets and executes from
the Reset Vector. For timing details on the Watchdog Reset, refer to Table 8-3 on page 33.
Figure 8-6.
Watchdog Timer
The Wathdog Timer can also be configured to generate an interrupt instead of a reset. This can be very helpful
when using the Watchdog to wake-up from Power-down.
To prevent unintentional disabling of the Watchdog or unintentional change of time-out period, two different safety
levels are selected by the fuse WDTON as shown in Table 8-1 on page 31. See “Procedure for Changing the
CK
CC
OSC/2K
OSC/4K
OSC/8K
OSC/16K
OSC/32K
OSC/64K
OSC/128K
OSC/256K
OSC/512K
OSC/1024K
MCU RESET
WATCHDOG
PRESCALER
128 kHz
OSCILLATOR
WATCHDOG
RESET
WDP0
WDP1
WDP2
WDP3
WDE
MUX
相關(guān)PDF資料
PDF描述
AS80C51C-12D 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC44
AS80C51C-12R 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC44
AF280C51C-16R 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44
AV80C51C-36R 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQFP44
ABM3B-FREQ2-18-R100-4-H-T QUARTZ CRYSTAL RESONATOR, 10 MHz - 11.999 MHz
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