https://devzone.nordicsemi.com/f/nordic-q-a/38699/nrf52840-debug-out-1-8v-mcuHi I&#39;m trying to use the nRF52840 DK debug out to program/flash an external nRF52840 IC that runs at 1.8V logic level. According to the manual, the DK is running at 3V via a buck converter. Is it possible to change the feedback resistor pack anden-USTelligent Community 13Thu, 27 Sep 2018 17:47:40 GMThttps://devzone.nordicsemi.com/thread/150767?ContentTypeID=1Thu, 27 Sep 2018 17:47:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d1d20c68-1e6d-4acd-9f02-0bb7833c47b2Chu<p>Thanks! Could you recommend a level shifter in this case? I needs to have 4 bidirectional channels, and cope with 13K internal pull-up/down resistance.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/149489?ContentTypeID=1Wed, 19 Sep 2018 14:58:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a06402a2-12b4-4321-a109-432be0f0a157Nguyen Hoan Hoang<p>No, you need a level shifter to match the logic level.</p><div style="clear:both;"></div>