https://devzone.nordicsemi.com/f/nordic-q-a/75367/current-consumption-on-nrf52840-dk-pca10056-at-system-on-modeHi All, I want to verfiy the current consumption of nRF52840. I&#39;m using an nRF52840 DK and SDK 17.0.2 RTC example. below are the verfiy steps: 1. Cut SB40 on PCA10056 board, use RIGOL DM3068 to measure the current through P22. 2. Download firmwareen-USTelligent Community 13Thu, 20 May 2021 12:22:57 GMThttps://devzone.nordicsemi.com/thread/310741?ContentTypeID=1Thu, 20 May 2021 12:22:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:625962b2-9601-44f5-a394-48c03d049242yanning<p>Thanks a lot, Stian</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/310720?ContentTypeID=1Thu, 20 May 2021 11:48:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:841c26f1-b487-49a9-a089-aae80a613f5fStian R&#248;ed Hafskjold<p>The 1.5 uA is without any RAM retention. All examples have all 256kB of RAM powered on by default. The current you are measuring corresponds to I_{ON_RAMON_RTC}</p> <p>The numbers in the PS are typical numbers only, and there will be chip to chip variations.</p> <p>To turn off RAM retention use <a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html?cp=4_0_0_4_2_6_20#register.RAM-0-8.POWER">NRF_POWER-&gt;RAM[n].POWER</a> registers. You will have to allow some RAM to be retained on order for your application to run. And you will have to adjust the linker script accordingly.</p><div style="clear:both;"></div>