https://devzone.nordicsemi.com/f/nordic-q-a/121010/power-spike-resetHi, We have experienced some unknown resets in our devices specifically when woken up after being in storage for a prolonged period in ULP mode - about a year or so. Afterwards when we got the device into research to try and find the cause of reseten-USTelligent Community 13Mon, 28 Apr 2025 11:14:14 GMThttps://devzone.nordicsemi.com/thread/533162?ContentTypeID=1Mon, 28 Apr 2025 11:14:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b145f6e1-359a-47f3-a50c-ff296f6d6612Kenneth<p>Hi,</p> <p>The 300mV within 300ms period is absolute worst case over product variation, supply voltage and temperature. For a normal chip under normal conditions I would expect more in the range of 600-700mV. Normally a rapid&nbsp;increase is more likely to trigger the reset than a slow increase yes.</p> <p>Kenneth</p><div style="clear:both;"></div>