https://devzone.nordicsemi.com/f/nordic-q-a/59398/reset-pin-functionalityHi! I&#39;m trying to understand from the documentation why the reset pin is unique. What I mean by that is why is the reset pin different than assigning a GPIO to a button and asking for a soft device reset when it is pressed? Is the voltage cut from theen-USTelligent Community 13Tue, 24 Mar 2020 09:59:08 GMThttps://devzone.nordicsemi.com/thread/241309?ContentTypeID=1Tue, 24 Mar 2020 09:59:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0dd00d52-31e8-4674-81ef-72d52259b557J&#248;rgen Holmefjord<p>Hi,</p> <p>The different reset sources are described in the <a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html#unique_1354744538">product specifications</a>. You can see which targets are reset by the different reset sources in the table under&nbsp;<a title="Reset behavior" href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html#concept_res_behav">Reset behavior</a>. As you can see, there are more targets reset by the pin reset.</p> <p>If the application is stuck, using a GPIO and triggering a soft reset would only work if the application is in an interrupt priority lower than the GPIOTE interrupt level. Pin reset does not have this limitation.</p> <p>With regards to DFU, PINRESET can be used as one of the <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_bootloader.html#lib_bootloader_dfu_mode">methods to enter the bootloader</a> (<a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/group__nrf__bootloader__config.html#gaa89bea64482f2c4d83919922e5e84bc3">NRF_BL_DFU_ENTER_METHOD_PINRESET</a>).</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>