32MHz external clock

[SimonW]

I am developing a BLE to LORA interface using nRF52840.

The LORA transceiver needs a 32MHz clock. Is there any way that I can get the nRF52840 to generate this?

I will be using SPIM as the transceiver interface, and I will also be using the UART and USB. All other resources are free at the moment.

Can PCLK32M be mapped to an I/O pin?

Can I get the QSPI clock to run continuously at 32MHz?

Can I connect an extra load to either XC1 or XC2?

Any other possibilities?

Many thanks

[Marjeris Romero]

Hi,

Sorry for the late reply.

The LORA transceiver needs a 32MHz clock. Is there any way that I can get the nRF52840 to generate this?

I don't think this will be possible. The SPI clock is not accurate enough to use as a reference for a clock. It's also not possible to share the 32MHz crystal connecting an extra load, as the radio on the nRF52 will no function properly then.

Best regards,

Marjeris

[4HERE_Corp]

Hello, can we revisit this question with current parts, and a design that includes the nRF54L15 and the nPM1300. There is an additional transceiver that requires a 32MHz clock input. Is there a 32MHz output from the nRF that can be used so we do not have to include an additional xtal for the transceiver? 

Thanks

Gerard