https://devzone.nordicsemi.com/f/nordic-q-a/39570/nrf52840-power-up-sequence-neededHi there, Is there a specific sequence needed to power-up the NRF52840? Let me get into the details: My design uses configuration #5 from the datasheet (see below) Due to my power tree, in certain conditions (e.g. no battery connected oren-USTelligent Community 13Thu, 18 Oct 2018 12:04:27 GMThttps://devzone.nordicsemi.com/thread/153470?ContentTypeID=1Thu, 18 Oct 2018 12:04:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3dd37a43-7dd9-444c-890f-b754f86ce097ketiljo<p>Hi Michael</p> <p>I have checked with the design that made the VBUS regulator: &quot;Nothing bad should happen. The chip will not be damaged in any way, and is kept in a defined state until VDD_nRF has ramped up and power-on reset de-asserted.&quot;</p> <p>best regards,</p> <p>Ketil Aas-Johansen</p><div style="clear:both;"></div>