https://devzone.nordicsemi.com/f/nordic-q-a/128506/gpio-pin-current-injectionHow much current can be injected safely into the various I/O pins of nRF54H20? To get the desired trigger level, and tolerate a maximum input voltage for the product, I have a voltage divider, where a maximum current of 50 uA can flow into the pin aten-USTelligent Community 13Fri, 19 Jun 2026 15:10:14 GMThttps://devzone.nordicsemi.com/thread/568205?ContentTypeID=1Fri, 19 Jun 2026 15:10:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f11eae50-78e7-4c9d-87a8-bc3eae6eee4bTurbo J<p>Schematic recommended. Description with words can be misleading.</p> <p>With a current source at a pin you have a problem when the chip is in power saving mode. Once the MCU current was smaller than the injected one, you will see VDD rail rising. If it could go above absolute limits, you would damage the chip that way.</p> <p>No idea if that is&nbsp;<em>possible</em> in your case - hence the need for a schematic.</p><div style="clear:both;"></div>