Datasheet

PIC18FXX2
DS39564C-page 204 © 2006 Microchip Technology Inc.
19.2.2 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 19-1: WATCHDOG TIMER BLOCK DIAGRAM
TABLE 19-2: SUMMARY OF WATCHDOG TIMER REGISTERS
Postscaler
WDT Timer
WDTEN
8 - to - 1 MUX
WDTPS2:WDTPS0
WDT
Time-out
8
SWDTEN bit
Configuration bit
Note: WDPS2:WDPS0 are bits in register CONFIG2H.
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
CONFIG2H
— — — — WDTPS2 WDTPS2 WDTPS0 WDTEN
RCON
IPEN — — RI TO PD POR BOR
WDTCON — — — — — — —SWDTEN
Legend: Shaded cells are not used by the Watchdog Timer.