https://devzone.nordicsemi.com/f/nordic-q-a/76231/nrf52840-zephyr-how-to-achieve-low-current-consumptionHi I&#39;m learning Zephyr ecosystem in context of using nRF SoCs. How one can achieve current consumption values as low as in datasheet ( 0,4 uA in System Off, with no RAM retention, wake on reset)? I&#39;m measuring current using PPK2 and NRF52840DK and I canen-USTelligent Community 13Wed, 16 Jun 2021 14:03:19 GMThttps://devzone.nordicsemi.com/thread/315660?ContentTypeID=1Wed, 16 Jun 2021 14:03:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c2c89d4-766b-4cbf-af6f-46f8b6df9b89Hakon<p>Hi,</p> <p>k_sleep() does not put the CPU in system off. You need to put it in system off explicitly, for instance by writing to the register NRF_POWER-&gt;SYSTEMOFF = 1.</p><div style="clear:both;"></div>