11.3.4.1.2 32 KHz Oscillator (OSCULP32K)

The 32 KHz 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 provides the 1 KHz signal for the Real-Time Counter (RTC), the Watchdog Timer (WDT), and the Brown-out Detector (BOD).

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