PIC16LF720_11 Datasheet, PDF (30/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
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
T1GSS = 11
TMR1GE
WDTE
From TMR0
Clock Source
Low-Power
WDT OSC
0
Divide by
512
1
PSA
TABLE 3-3: WDT STATUS
Conditions
WDTE = 0
CLRWDT Command
Exit Sleep + System Clock = INTOSC, EXTCLK
Postscaler
8
0
1
To T1G
WDTE
PS<2:0>
TO TMR0
WDT Reset
WDT
Cleared
DS41430B-page 30
Preliminary
 2011 Microchip Technology Inc.