https://devzone.nordicsemi.com/f/nordic-q-a/70607/which-gpio-pin-can-be-used-to-uart-rs232-in-nrf52820I cannot find the GPIO configration documents.en-USTelligent Community 13Mon, 18 Jan 2021 23:48:06 GMThttps://devzone.nordicsemi.com/thread/289887?ContentTypeID=1Mon, 18 Jan 2021 23:48:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:52b04ac5-615b-4419-89fb-4066b4dcafd2James_Kor<p>Thanks for answer clearly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/289701?ContentTypeID=1Mon, 18 Jan 2021 11:43:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02c5e629-b9cd-490d-a98c-e52f0609a6e8Simonr<p>Hi</p> <p>Please check out <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52820%2Fpin.html&amp;anchor=wlcsp">the pin assignments</a> in the product specification. all pins defines as&nbsp;<span>General purpose I/O can be used for UART, but the ones that are recommended as &quot;Standard drive, low frequency I/Os only&quot; should not be used for high frequency purposes while the radio is running to prevent interference.</span></p> <p><span>Best regards,</span></p> <p><span>Simon</span></p><div style="clear:both;"></div>