https://devzone.nordicsemi.com/f/nordic-q-a/25863/where-is-the-nrf5-series-user-specification-documentI have been trying to find a document referenced here 1 . The reference reads as follows: For more information on both modes, see sd_app_evt_wait and the nRF5 Series User Specification (Section: POWER - Power control). Does anyone haveen-USTelligent Community 13Wed, 11 Oct 2017 20:25:59 GMThttps://devzone.nordicsemi.com/thread/101877?ContentTypeID=1Wed, 11 Oct 2017 20:25:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d1c3c4dd-a141-450c-996f-d0933b6feb44endnode<p>There is nothing called &quot;nRF5 Series User Specification&quot; but what author probably wanted to say is that you need to go to respective <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf51/dita/nrf51/pdflinks/ref_manual.html?cp=3_2">Reference Manual (in case of nRF51)</a> or <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/chips/nrf52832_ps.html?cp=2_1_0">Product Specification</a> (in case of nRF52832 - note that nRF52 has single document per chip not family so for nRF52840 and nRF52810 you need to o to different PDFs - although the chips are so similar that there will be little differences in this particular section).</p><div style="clear:both;"></div>