PIC18F6525_13 Datasheet, PDF (268/400 Pages) Microchip Technology – 64/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with A/D

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