https://devzone.nordicsemi.com/f/nordic-q-a/91313/nrf52840-at-1-8vHello Devs, I am testing an nRF52840, configured to operate to 1.8V using the DCDC converter. All pins are supposed to operate in a 0-1.8V range. So my question is, for GPIOS used as input, can I apply 3.3V to them? or will it be against the aen-USTelligent Community 13Thu, 25 Aug 2022 13:50:14 GMThttps://devzone.nordicsemi.com/thread/383313?ContentTypeID=1Thu, 25 Aug 2022 13:50:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0206024e-f957-4ed3-807d-da70677b30efSwRa<p>Hello,</p> <p>If you want to apply 3.3V to a gpio, you will have to change the Vdd to atleast 3V (as you know, the absolute maximum voltage of a gpio is VDD+0.3V), or use a level shifter to shift it down to 1.8V.</p> <p>Best Regards,</p> <p>Swathy</p><div style="clear:both;"></div>