11.1.2.4 LFINTOSC

The Low-Frequency Internal Oscillator (LFINTOSC) is a factory-calibrated 31 kHz internal clock source.

The LFINTOSC can be used as a system clock source and may be used by certain peripheral modules as a clock source. Additionally, the LFINTOSC provides a time base for the following:

  • Power-up Timer (PWRT)
  • Watchdog Timer (WDT)/Windowed Watchdog Timer (WWDT)
  • Fail-Safe Clock Monitor (FSCM)
The LFINTOSC is enabled through one of the following methods:
  • Program the RSTOSC Configuration bits to select LFINTOSC
  • Write the NOSC bits to select LFINTOSC during run time