https://devzone.nordicsemi.com/f/nordic-q-a/67966/external-32k-clock-sourceHi Support team, A customer would like to use an external 32kHz TCXO to nRF52840. As the picture shown, the original 32kHz crystal and the loading capacitors are removed, and a 32kHz rail-to-rail signal is fed to XL1. According to nRF52840 product specificationen-USTelligent Community 13Fri, 20 Nov 2020 13:15:17 GMThttps://devzone.nordicsemi.com/thread/281110?ContentTypeID=1Fri, 20 Nov 2020 13:15:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5cadbe45-85ae-4644-ae77-c4e6bab3328eAndreas<p>Hi Salas,</p> <p>&nbsp;<br />OK, good to hear. Closing case.</p> <p>&nbsp;</p> <p>Best regards,<br />Andreas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/281020?ContentTypeID=1Fri, 20 Nov 2020 03:54:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4a3e1a8a-efa5-4124-93f7-3d907e60af08Salas<p>Hi Andreas,</p> <p>Our FAE has just informed me today that&nbsp;the problem gets solved&nbsp;after you reminded the register setting, thank you very much,&nbsp;please close this case.</p> <p>Regards</p> <p>Salas</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/278563?ContentTypeID=1Thu, 05 Nov 2020 10:14:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7238c9d-0f27-4507-a61e-c2bd2a15be9aAndreas<p>Hi Salas,</p> <p>&nbsp;</p> <p>Sorry for the late reply. I am not aware of any similar experiences and not able to find any sign of it. I trust the correct <a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/clock.html?cp=4_0_0_4_3_1#concept_xkj_np1_2r">BYPASS and EXTERNAL settings</a> are set? I will have to forward internally and get back to you.</p> <p>&nbsp;</p> <p>As for the accuracy, the LFCLK is as accurate as its source.</p> <p>&nbsp;</p> <p>Best regards,<br />Andreas</p><div style="clear:both;"></div>