參數(shù)資料
型號: PIC12F1840T-I/MF
廠商: Microchip Technology
文件頁數(shù): 116/122頁
文件大小: 0K
描述: MCU 7KB FLASH 256B RAM XLP 8DFN
標(biāo)準(zhǔn)包裝: 3,300
系列: PIC® XLP™ 12F
核心處理器: PIC
芯體尺寸: 8-位
速度: 32MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 5
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-VDFN 裸露焊盤
包裝: 帶卷 (TR)
2011 Microchip Technology Inc.
Preliminary
DS41441B-page 93
PIC12(L)F1840
10.0
WATCHDOG TIMER
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 (typical)
Multiple Reset conditions
Operation during Sleep
FIGURE 10-1:
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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