Datasheet

PIC18F6525/6621/8525/8621
DS39612C-page 268  2003-2013 Microchip Technology Inc.
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
TABLE 24-2: SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
Postscaler
WDT Timer
WDTEN
16-to-1 MUX
WDTPS3:WDTPS0
WDT
Time-out
16
SWDTEN bit
Configuration bit
Note: WDTPS3:WDTPS0 are bits in register CONFIG2H.
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
CONFIG2H — — — WDTPS3 WDTPS2 WDTPS2 WDTPS0 WDTEN
RCON
IPEN — — RI TO PD POR BOR
WDTCON — — — — — — —SWDTEN
Legend: Shaded cells are not used by the Watchdog Timer.