Use single output 32.768kHz TCXO as LFCLK source on nRF52840https://devzone.nordicsemi.com/f/nordic-q-a/123080/use-single-output-32-768khz-tcxo-as-lfclk-source-on-nrf52840Hello, I am working with a custom board that has the nRF52840 (via the ISP1807-LR-RS module). This board has the SIT1552AI-JE-DCC-32.768E MEMS TCXO. This TCXO chip has a single clock out line connected to pin P0.30 of the nRF52840. I see from the datasheeten-USTelligent Community 13Mon, 21 Jul 2025 07:20:57 GMTRE: Use single output 32.768kHz TCXO as LFCLK source on nRF52840https://devzone.nordicsemi.com/thread/542956?ContentTypeID=1Mon, 21 Jul 2025 07:20:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c52f2bc2-6378-4815-9db9-a7e90bf6f8efSimonr<p>Hi</p> <p>I&#39;m afraid you will need to use the XL1 line if you want to use a single output clock source with a TCXO.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>