22.8.5 RTC Clock Selection Control

Name: RTCCTRL
Offset: 0x10
Reset: 0x00000000
Property: PAC Write-Protection

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
          
Access  
Reset  
Bit 76543210 
      RTCSEL[2:0] 
Access R/WR/WR/W 
Reset 000 

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

These bits select the source for the RTC.
ValueNameDescription
0x0 ULP1K 1.024kHz from 32KHz internal ULP oscillator
0x1 ULP32K 32.768kHz from 32KHz internal ULP oscillator
0x2 OSC1K 1.024kHz from 32KHz internal oscillator
0x3 OSC32K 32.768kHz from 32KHz internal oscillator
0x4 XOSC1K 1.024kHz from 32KHz external oscillator
0x5 XOSC32K 32.768kHz from 32KHz external crystal oscillator
0x6 Reserved
0x7 Reserved