https://devzone.nordicsemi.com/f/nordic-q-a/94547/device-power-management-and-saadcIn the nRF52840 datasheet, peripherals don&#39;t appear to have shutdown or power-off controls but they do have enable/disable registers. I&#39;m guessing that Device PM turns on/off these bits and then the PMU automatically turns on/off the power to the disableden-USTelligent Community 13Wed, 07 Dec 2022 15:09:18 GMThttps://devzone.nordicsemi.com/thread/399483?ContentTypeID=1Wed, 07 Dec 2022 15:09:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05d0a13f-3c58-4ad8-a470-473341aed80cNguyen Hoan Hoang<p>uninit does not work see&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/94105/using-saadc-for-2-channels-burst-mode-current-consumption-remains-constant-after-nrf_drv_saadc_uninit-call">https://devzone.nordicsemi.com/f/nordic-q-a/94105/using-saadc-for-2-channels-burst-mode-current-consumption-remains-constant-after-nrf_drv_saadc_uninit-call</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/399278?ContentTypeID=1Tue, 06 Dec 2022 21:29:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2936380e-8cf0-4e9b-a149-ccf6a064d184Sigurd<p>Hi,</p> <p>Looks like the Zephyr ADC driver has not&nbsp;implemented PM functionality yet. If you are using the nrfx driver directly, you can use&nbsp;<span>nrfx_saadc_uninit()</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/399132?ContentTypeID=1Tue, 06 Dec 2022 09:52:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:48b9c045-2522-4289-a8ba-c4cca9fcd726Nguyen Hoan Hoang<p>This is undocumented. Power it off with&nbsp;</p> <p><span class="Apple-tab-span"></span>*(<span><b>volatile</b></span> <span>uint32_t</span> *)((<span>uint32_t</span>)NRF_SAADC + 0xFFC) = 0;</p> <p>Just make sure after that to power it back on by writing 1 before initializing it again</p><div style="clear:both;"></div>