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PIC16F720-E/SS データシート(PDF) 30 Page - Microchip Technology

部品番号 PIC16F720-E/SS
部品情報  20-Pin Flash Microcontrollers with nanoWatt XLP Technology
PDF  244 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F720-E/SS データシート(HTML) 30 Page - Microchip Technology

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PIC16F/LF720/721
DS41430A-page 30
 2010 Microchip Technology Inc.
3.4.2
WDT CONTROL
The WDTE bit is located in the Configuration Word
Register 1. When set, the WDT runs continuously.
The PSA and PS<2:0> bits of the OPTION register
control the WDT period. See Section 12.0 “Timer0
Module” for more information.
FIGURE 3-1:
WATCHDOG TIMER BLOCK DIAGRAM
From TMR0
Postscaler
8
PS<2:0>
PSA
TO TMR0
1
1
0
0
Clock Source
To T1G
Divide by
512
WDTE
TMR1GE
T1GSS = 11
WDTE
WDT Reset
Low-Power
WDT OSC
TABLE 3-3:
WDT STATUS
Conditions
WDT
WDTE = 0
Cleared
CLRWDT
Command
Exit Sleep + System Clock = INTOSC, EXTCLK



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