32 KHz clock out

RE: 32 KHz clock out

Susheel Nuguru — Mon, 21 Nov 2016 21:22:24 GMT

No Vishnu, it is not possible to clock out exactly 32768 Hz to GPIOSs using nRF

RE: 32 KHz clock out

Vishnu Pradeep — Wed, 16 Nov 2016 14:03:46 GMT

@Aryan: Is there any way that nRF52 with a 32KHz external crystal can out 32KHz clock?

RE: 32 KHz clock out

Susheel Nuguru — Wed, 07 Sep 2016 12:09:36 GMT

I'm afraid you cannot do that.

RE: 32 KHz clock out

Vishnu Pradeep — Wed, 07 Sep 2016 07:18:51 GMT

I am using an external 32Khz crystal for nRF. Is it possible to step up this frequency with the help of internal PLL? Does nRF52 provides an option for that?

RE: 32 KHz clock out

Susheel Nuguru — Wed, 07 Sep 2016 06:57:40 GMT

This thread has discussed this. The closest I can get is 32.787kHz (if using 16MHz clock) (look at comment from @Tosa). If you want to generate it using LF XTAL and RTC then you can get half of that with almost same accuracy as the XTAL (board capacitance might come to picture).