https://devzone.nordicsemi.com/f/nordic-q-a/44993/nrf9160---3-3v-iosDear all, Is this possible to flip a switch on the board to get nRF9160 IOs at 3.3v rather than 1.8v ? I have a LoRa module that requires TTL 3.3v UART signals, and it would be great if I can go without any supplementary hardware like a Level shifteren-USTelligent Community 13Mon, 18 Mar 2019 14:58:30 GMThttps://devzone.nordicsemi.com/thread/176773?ContentTypeID=1Mon, 18 Mar 2019 14:58:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1fdd1199-c7e7-4ede-bc65-e37cb95d497aNico_ID<p>Great, thanks for thanks for that fast response !</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/176770?ContentTypeID=1Mon, 18 Mar 2019 14:52:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d40d50e5-c82c-4791-ab3c-6521d2052db0Andreas<p>Hi,</p> <p>&nbsp;</p> <p>See the <a href="https://www.nordicsemi.com/DocLib/Content/User_Guides/nrf91_dk/latest/UG/nrf91_DK/hw_description/power_supply/power_sources_vdd">nRF9160-DK user guide</a>.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>