PIC18F2331/2431/4331/4431
REGISTER 23-15: WDTCON: WATCHDOG TIMER CONTROL REGISTER
R-0
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
R/W-0
SWDTEN(1)
bit 0
WDTW
bit 7
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 7
WDTW: Watchdog Timer Window bit
1= WDT count is in fourth quadrant
0= WDT count is not in fourth quadrant
bit 6-1
bit 0
Unimplemented: Read as ‘0’
SWDTEN: Software Enable/Disable for Watchdog Timer bit(1)
1= WDT is turned on
0= WDT is turned off
Note 1: If the WDTEN Configuration bit = 1, then WDT is always enabled, irrespective of this control bit. If WDTEN
Configuration bit = 0, then it is possible to turn WDT on/off with this control bit.
TABLE 23-2: SUMMARY OF WATCHDOG TIMER REGISTERS
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CONFIG2H
RCON
—
—
—
—
WINEN
—
WDTPS3 WDTPS2 WDTPS2 WDTPS0
WDTEN
BOR
IPEN
WDTW
RI
—
TO
—
PD
—
POR
—
WDTCON
—
SWDTEN
Legend: Shaded cells are not used by the Watchdog Timer.
2010 Microchip Technology Inc.
DS39616D-page 275
MICROCHIP [ MICROCHIP ]
