https://devzone.nordicsemi.com/f/nordic-q-a/67026/configure-the-high-frequency-crystal-to-different-frequenciesHi Team, This Query is regarding HF frequency Crystal settings, how to configure the nRF52840 Evaluation board to different frequencies. Actually we need to test the crypto Algorithms at different frequencies. Can anybody Help me out on this issueen-USTelligent Community 13Tue, 13 Oct 2020 05:34:09 GMThttps://devzone.nordicsemi.com/thread/274451?ContentTypeID=1Tue, 13 Oct 2020 05:34:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:86081742-ef98-49ef-af53-9798ae4a47b1Srinivas V<p>Hi Turbo J,</p> <p>Thanks for your reply. Is there any way to know the CC310, RNG and other crypto backends peripherals running frequency.</p> <p>My requirement is to do the timing analysis for RSA and ECC functionalities,&nbsp; like how much time it is taking for complete Digital Signature verification and validation at different frequencies. Based on that we will choose the respective algorithm for our development.</p> <p>Regards,</p> <p>Srinivas.V</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/274431?ContentTypeID=1Mon, 12 Oct 2020 18:40:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1380954c-7066-4aa2-9133-536fb7badfb6Turbo J<p>The nRF52840 runs the Cortex-M4F core at fixed 64MHz clock frequency. Not possible to change.</p><div style="clear:both;"></div>