https://devzone.nordicsemi.com/f/nordic-q-a/121400/brown-out-reset-in-nrf54l15How can I differentiate between a brown-out and an initial power-up on the nRF54L15? In my project, I need to detect a brown-out event in order to trigger specific actions. However, it seems that a brown-out reset is similar to a power-up reset. Additionallyen-USTelligent Community 13Tue, 13 May 2025 09:26:43 GMThttps://devzone.nordicsemi.com/thread/535063?ContentTypeID=1Tue, 13 May 2025 09:26:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:695ac13c-3a20-43a9-aa66-2e1e3b159ca3Hung Bui<p>Hi Mahmoud,&nbsp;<br />I don&#39;t think there is an easy way to detect if the device reset from a power up reset or brown-out reset, as mentioned in the API.&nbsp;</p> <p><br />You can take a look at this (old) thread&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/7769/differentiating-between-brown-out-vs-initial-power-up">Differentiating between brown-out vs initial power-up</a>&nbsp;<br /><br /></p> <p>Basically You need to be able to detect that the device is (or may be) going to brown out and try to write to flash before the reset occurs.&nbsp;</p><div style="clear:both;"></div>