RTCCTRL

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Interpret as RTCCTRL

RTCSEL=ULP1K

RTC Clock Selection

RTCSEL

RTC Clock Selection

0 (ULP1K): 1.024kHz from 32kHz internal ULP oscillator

1 (ULP32K): 32.768kHz from 32kHz internal ULP oscillator

4 (XOSC1K): 1.024kHz from 32.768kHz internal oscillator

5 (XOSC32K): 32.768kHz from 32.768kHz external crystal oscillator

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