How to calculate System Clock frequency of nrf52840

[shafi]

Hi,

I am working BT840F which has nrf52840, I am using ble_app_uart example to transfer UART data to app. I wanted to know what is the system frequency of the microcontroller and what is the frequency which is being fed to UART peripheral. The clock source is NRF_CLOCK_LF_SRC_SYNTH.

Regards,

Shafi

[Sigurd]

Hi!

I wanted to know what is the system frequency of the microcontroller a

The CPU runs at 64 MHz.

and what is the frequency which is being fed to UART peripheral

 16 MHz peripheral clock

[shafi]

Thanks for the quick response. How to verify system frequency is 64MHz and UART or any other peripheral is fed a particular frequency (16MHz for UART).
Another query I had  is which CLK source is better NRF_CLOCK_LF_SRC_SYNTH or NRF_CLOCK_LF_SRC_RC.