https://devzone.nordicsemi.com/f/nordic-q-a/106323/nrf5340-mapping-different-interface-on-qspi-pinsHello, I am currently developing a new hardware that feature NRF9160 and NRF5340. These two should communicate with each other using UART. Since space is very limited, I want to map the UART pins on P0.15 and P0.18. The datasheet of NRF5340 statesen-USTelligent Community 13Tue, 05 Dec 2023 11:35:39 GMThttps://devzone.nordicsemi.com/thread/458936?ContentTypeID=1Tue, 05 Dec 2023 11:35:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4f0012a8-738d-499b-a9fb-3bb344252db3th_pu<p>Thanks for confirmation!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/458787?ContentTypeID=1Mon, 04 Dec 2023 15:44:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1f25ad40-9fe6-4599-8a6e-e228c5e4f1c3PaKa<p>The limitations are which pins are suitable for the QSPI, the data rate is high so will generate more noise than other series interfaces. The pins with the QSPI label are between power rails so the best decoupled pins (to dampen noise) and if you use the QSPI it&#39;s highly recommended to use these pins. If you are not using QSPI then you can use them for whatever you want.</p><div style="clear:both;"></div>