10.3.4.1.2 32KHz Oscillator (OSCULP32K)

The 32KHz oscillator is optimized for Ultra Low Power (ULP) operation. Power consumption is decreased at the cost of decreased accuracy compared to an external crystal oscillator.

This oscillator also provides the 1KHz signal for the Real Time Counter (RTC), the Watchdog Timer (WDT), and the Brownout Detector (BOD).

The start-up time of this oscillator is the oscillator start-up time plus 4 oscillator cycles. Refer to Electrical Characteristics chapter for the start-up time.