參數(shù)資料
型號: KSZ8895MQI
廠商: Micrel Inc
文件頁數(shù): 119/119頁
文件大小: 0K
描述: IC ETHERNET SWITCH 5PORT 128PQFP
特色產(chǎn)品: KSZ8895MQ Ethernet Switches
標(biāo)準(zhǔn)包裝: 66
系列: *
其它名稱: 576-3997
2011-2012 Microchip Technology Inc.
Preliminary
DS41579C-page 99
PIC16(L)F1782/3
11.0 WATCHDOG TIMER (WDT)
The Watchdog Timer is a system timer that generates
a Reset if the firmware does not issue a CLRWDT
instruction within the time-out period. The Watchdog
Timer is typically used to recover the system from
unexpected events.
The WDT has the following features:
Independent clock source
Multiple operating modes
- WDT is always on
- WDT is off when in Sleep
- WDT is controlled by software
- WDT is always off
Configurable time-out period is from 1 ms to 256
seconds (nominal)
Multiple Reset conditions
Operation during Sleep
FIGURE 11-1:
WATCHDOG TIMER BLOCK DIAGRAM
LFINTOSC
23-bit Programmable
Prescaler WDT
WDT Time-out
WDTPS<4:0>
SWDTEN
Sleep
WDTE<1:0> = 11
WDTE<1:0> = 01
WDTE<1:0> = 10
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