26.13.8 Clock Selection

Name: CLKSEL
Offset: 0x07
Reset: 0x00
Property: -

Bit 76543210 
       CLKSEL[1:0] 
Access R/WR/W 
Reset 00 

Bits 1:0 – CLKSEL[1:0] Clock Select

Writing these bits select the source for the RTC clock (CLK_RTC).

Value Name Description
0x00 OSC32K 32.768 kHz from OSC32K
0x01 OSC1K 1.024 kHz from OSC32K
0x02 XTAL32K 32.768 kHz from XOSC32K or external clock from XTAL32K1 pin
0x03 EXTCLK External clock from the EXTCLK pin