32MHz Clock Output

[4HERE_Corp]

I have an additional part in my design that requires a 32MHz clock input. Is there a 32MHz buffered clock output that can be configured/used from the nRF54/nPM1300 to achieve this. I am trying to avoid placing two 32MHz xtals in the design.

Thanks

Gerard

[Håkon Alseth]

Hi,

 

GRTC has the option to output a clock (up to 16 MHz), as per the details given here:

https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/grtc.html#ariaid-title5

 

LFCLK can be setup with an external source:

https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/clock.html#ariaid-title37 

however; the HFCLK cannot, as evident by the missing option to set a similar register for it.

 

Unfortunately, the nRF does not support sharing a buffered HF clock output.

 

Kind regards,

Håkon

[4HERE_Corp]

Hi Håkon

Appreciate the response, this is what I was thinking, but wanted to confirm.

Gerard

[Emil Lenngren]

I'm not sure but maybe you can use the RISC-V core to generate your pulses using a loop that toggles the pin at the correct frequency.

[4HERE_Corp]

Hi Emil,

Thanks for the suggestion, we will definitely look into this approach.