How to connect external 32.768K crystal

[alex_li]

We want use external 32.768k crystal as RTC clock source.How to connect it to s32k142 ?

PTA7 as RTC_CLKIN, one of PTC4,PTC5,PTD13 as RTC_CLKOUT, is it right?

We also need provide 32768Hz signal to other device,can we connect it to RTC_CLKOUT directly?

Thanks!!!

[danielmartynek · Accepted solution]

Hi,

It is not possible to connect a 32.768kHz crystal to the RTC module. However, you can use an external oscillator (32.768kHz) connected to RTC_CLKIN pin. This clock can be then output at RTC_CLKOUT pin for other external peripherals.

Regards,

Daniel  

[alex_li]

Daniel :

      Thanks for your explanaion!

Regards,

min li