The WWDT can derive its time base from either the 31 KHz LFINTOSC or 31.25 kHz
MFINTOSC internal oscillators, depending on the value of WDT Operating Mode (WDTE)
Configuration bits. If WDTE =
'b1x, then the clock source will be
enabled depending on the WDTCCS Configuration bits. If WDTE =
'b01, the
SEN bit should be set by software to enable WWDT, and the
clock source is enabled by the
CS bits. Time intervals in this chapter are based on a minimum nominal
interval of 1 ms. See the device Electrical Specifications for LFINTOSC and MFINTOSC
tolerances.