It could be possible nRF52840 SoC is totally stopped, when power source is unstable ?https://devzone.nordicsemi.com/f/nordic-q-a/94253/it-could-be-possible-nrf52840-soc-is-totally-stopped-when-power-source-is-unstableHi, I&#39;m currently developing a certain product having limitted power source (about avg. current &lt; 100 uA ). main SoC is nRF52840, and SDK version is nRF5 SDK 17. There are no problem in normal cases, but sometimes there is a really &quot;weird phenomenaen-USTelligent Community 13Fri, 25 Nov 2022 12:45:12 GMTRE: It could be possible nRF52840 SoC is totally stopped, when power source is unstable ?https://devzone.nordicsemi.com/thread/397648?ContentTypeID=1Fri, 25 Nov 2022 12:45:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d017399b-9530-4b10-bd1a-270300b23b77Einar Thorsrud<p>Hi Kim,</p> <p>The nRF itself should not end up in an unrecoverable state due to unstable supply voltage. But if the voltage drops too low, you will get a brown out reset and it should recover.</p> <p>Have you done any debugging to see what state the nRF is in when you write you need to do a hard-reset to recover? What does that tell you? Is it in a loop somewhere, or in sleep waiting for event, or something else?</p><div style="clear:both;"></div>