PIC18F6X2X Datasheet, PDF (272/386 Pages) Microchip Technology – 64/80-Pin High Performance, 64-Kbyte Enhanced FLASH Microcontrollers with A/D

PIC18F6X2X/8X2X
24.2.2 WDT POSTSCALER
The WDT has a postscaler that can extend the WDT
Reset period. The postscaler is selected at the time of
the device programming by the value written to the
CONFIG2H Configuration register.
FIGURE 24-1:
WATCHDOG TIMER BLOCK DIAGRAM
WDT Timer
WDTEN
Configuration bit
SWDTEN bit
Postscaler
16
16 - to - 1 MUX
WDTPS3:WDTPS0
Note: WDPS3:WDPS0 are bits in register CONFIG2H.
WDT
Time-out
TABLE 24-2: SUMMARY OF WATCHDOG TIMER REGISTERS
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
CONFIG2H
—
—
—
WDTPS3 WDTPS2
RCON
IPEN
—
—
RI
TO
WDTCON
—
—
—
—
—
Legend: Shaded cells are not used by the Watchdog Timer.
Bit 2
WDTPS2
PD
—
Bit 1
WDTPS0
POR
—
Bit 0
WDTEN
BOR
SWDTEN
DS39612A-page 270
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 2003 Microchip Technology Inc.