https://devzone.nordicsemi.com/f/nordic-q-a/37750/nrf52-is-rtc-crystal-necessary-to-execute-zephyr-rtosCan we execute Zephyr RTOS on nRF52832 without RTC crystal &amp; relevant additional components to reduce PCB size &amp; BoM ?en-USTelligent Community 13Thu, 23 Aug 2018 13:13:54 GMThttps://devzone.nordicsemi.com/thread/145526?ContentTypeID=1Thu, 23 Aug 2018 13:13:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a555656a-9e34-435a-ac3f-1b0b9b2ecdd5H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>As long as zephyr supports using the 32k RC oscillator and properly calibrating it, which it shall have support for, then it shall be fine.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>