https://devzone.nordicsemi.com/f/nordic-q-a/83553/over-consumption-problem-in-sleep-modeHello, we have made 50 cards with your microcontroller,out of the 50 cards there are 6 cards which consume about 10&#181;A in sleep, while the others consume less than 1&#181;A. Have you ever had a similar case? Does exceeding the number of flash writes lead toen-USTelligent Community 13Tue, 11 Jan 2022 16:17:33 GMThttps://devzone.nordicsemi.com/thread/347243?ContentTypeID=1Tue, 11 Jan 2022 16:17:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fdc8fee7-889f-4135-9d9d-688e7494dc40H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>If you have configured one, or more, GPIOs as input with the register PIN_CNF, field &quot;INPUT&quot; set as &quot;CONNECTED&quot;:</p> <p><a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/gpio.html?cp=4_0_0_5_8_1_9#register.PIN_CNF-0-31">https://infocenter.nordicsemi.com/topic/ps_nrf52840/gpio.html?cp=4_0_0_5_8_1_9#register.PIN_CNF-0-31</a></p> <p>&nbsp;</p> <p>Then the GPIO can potentially float in sleep mode, causing excessive current.</p> <p>If you have any connections to external devices while in sleep, it is important that these are set to a defined level (VDD or GND, via a pull resistor).</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>