Datasheet

PIC12F752/HV752
DS41576B-page 156 Preliminary  2011 Microchip Technology Inc.
17.6.2 WDT PROGRAMMING
CONSIDERATIONS
It should also be taken in account that under worst-
case conditions (i.e., V
DD = Min., Temperature = Max.,
Max. WDT prescaler) it may take several seconds
before a WDT time-out occurs.
FIGURE 17-9: WATCHDOG TIMER WITH SHARED PRESCALE BLOCK DIAGRAM
TABLE 17-7: WDT STATUS
Conditions WDT
WDTE = 0
ClearedCLRWDT Command
Exit Sleep
T0CKI
T0SE
pin
TMR0
Watchdog
Timer
WDT
Time-out
PS<2:0>
Data Bus
Set Flag bit T0IF
on Overflow
T0CS
Note 1: T0SE, T0CS, PSA, PS<2:0> are bits in the OPTION_REG register.
2: WDTE bit is in the Configuration Word register.
0
1
0
1
0
1
8
8
8-bit
Prescaler
0
1
FOSC/4
PSA
PSA
PSA
Sync
2 T
CY
Shared Prescale
WDTE
LFINTOSC
(Figure 4-1)
2
PSA