https://devzone.nordicsemi.com/f/nordic-q-a/118956/how-to-disable-external-32mhzHi Team, I need help currently we are using nrf52833 micro controller, we have problem with external clocks. we want to disable external 32Mhz and 32khz clocks and use only internal clocks alone. can you please give software how to do that using zephyren-USTelligent Community 13Fri, 14 Feb 2025 12:24:27 GMThttps://devzone.nordicsemi.com/thread/523044?ContentTypeID=1Fri, 14 Feb 2025 12:24:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ddcca022-07b4-47c3-b800-4ef01a2b7522Vidar Berg<p>Hi,</p> <p>What kind of application to you want to run on this device? You&nbsp;won&#39;t be able to&nbsp;use any of the radio protocol stacks without the high-frequency crystal oscillator, as the internal oscillator is too inaccurate for the RADIO. But you can use the internal RC oscillator as the 32K clock source (note: this must normally be calibrated against the HF crystal oscillator to achieve sufficient accuracy).</p> <p>Which SDK version are you are on?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/523033?ContentTypeID=1Fri, 14 Feb 2025 11:55:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63ad1b13-a7d7-46c3-bf9f-009acd6fb990snoopy20<p>You should probably try a zephyr resource/forum.<br /><br />If you want to go direct take a look at the NRF_CLOCK tasks. <a id="" href="https://docs.nordicsemi.com/bundle/ps_nrf52810/page/clock.html">https://docs.nordicsemi.com/bundle/ps_nrf52810/page/clock.html</a><br />Take note if you&#39;re using softdevice you may have to do it through the API&#39;s and also an accurate 32KHz clock is mandatory either by crystal or synthesises from the 32MHz crystal.</p> <p></p><div style="clear:both;"></div>