24.8.5 RTC Clock Selection Control

Name: RTCCTRL
Offset: 0x10
Reset: 0x00
Property: PAC Write-Protection

Bit 76543210 
      RTCSEL[2:0] 
Access R/WR/WR/W 
Reset 000 

Bits 2:0 – RTCSEL[2:0] RTC Clock Selection

These bits select the source for the RTC.
ValueNameDescription
0x0ULP1K1.024 kHz from 32 kHz internal ULP oscillator
0x1ULP32K32.768 kHz from 32 kHz internal ULP oscillator
0x2, 0x3Reserved-
0x4XOSC1K1.024 kHz from 32 kHz external oscillator
0x5XOSC32K32.768 kHz from 32 kHz external crystal oscillator
0x6Reserved-
0x7Reserved-