https://devzone.nordicsemi.com/f/nordic-q-a/58292/uart-1mb-baud-rate-and-low-frequency-i-oHello, In the documentation on Infocenter for nRF52840 it is recommended to use P1.01 and P1.02 as low-frequency GPIO, while on nRF52840 DK those PINs are used for UART. Now I am confused whether those PINs could be used for UART communication withen-USTelligent Community 13Tue, 25 Feb 2020 12:31:41 GMThttps://devzone.nordicsemi.com/thread/236245?ContentTypeID=1Tue, 25 Feb 2020 12:31:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d37a9be3-b784-4ce0-b005-0238405aecd5Karl Ylvisaker<p>Hi,<br /><br />What do you mean, when you say that the pins on the nRF52840 DK is used for UART? Which application/example are you referring to?<br />All the GPIO pins are configurable on the nRF52840, meaning that UART is not bound to be on those pins if it is interfering with the radio.<br /><br />Low frequency is &lt; 10 kHz, so 1 Mbps baud rate is not recommended on low-frequency recommended pins. That is to say, it is not recommended, but you&nbsp;<em>can</em> do it. If you are going to use low-frequency recommended pins for high-frequency signals, you should make sure that the radio is not being used simultaneously, as the high-frequency signals will interfere with the radio pins.<br /><br />Best regards,<br />Karl<br /><br />&nbsp;</p><div style="clear:both;"></div>