PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 271

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

24.2.2
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:
TABLE 24-2:
CONFIG2H
RCON
WDTCON
Legend: Shaded cells are not used by the Watchdog Timer.
2002 Microchip Technology Inc.
Name
WDT POSTSCALER
Configuration bit
Note:
WDTEN
SUMMARY OF WATCHDOG TIMER REGISTERS
IPEN
Bit 7
—
—
WATCHDOG TIMER BLOCK DIAGRAM
WDPS2:WDPS0 are bits in register CONFIG2H.
WDT Timer
Bit 6
—
—
—
SWDTEN bit
Bit 5
—
—
—
Preliminary
Bit 4
—
RI
—
WDTPS2
8 - to - 1 MUX
Postscaler
Bit 3
Time-out
TO
—
WDT
8
WDTPS2
Bit 2
PD
—
PIC18FXX8
WDTPS2:WDTPS0
WDTPS0
Bit 1
POR
—
DS41159B-page 269
SWDTEN
WDTEN
Bit 0
BOR