RTC Clock Selection Control
Name:
RTCCTRL
Offset:
0x10
Reset:
0x00000000
Access:
PAC Write-Protection
Bit3130292827262524
Access
Reset
Bit2322212019181716
Access
Reset
Bit15141312111098
Access
Reset
Bit76543210
RTCSEL[2:0]
AccessR/WR/WR/W
Reset000

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

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