https://devzone.nordicsemi.com/f/nordic-q-a/544/are-short-sleeps-usefulI&#39;m working on a product that integrates an nrF51822 talking over SPI to an external display. The display protocol involves a series of alternating 10 us sleeps and SPI sends at 16Mhz of small numbers of bytes (usually 2 but always &lt; about 40). I&#39;m currentlyen-USTelligent Community 13Thu, 10 Apr 2014 22:47:01 GMThttps://devzone.nordicsemi.com/thread/2798?ContentTypeID=1Thu, 10 Apr 2014 22:47:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e309704f-71b5-4af8-bfa6-ff9891f188b8ovrebekk<p>Hi Chris</p> <p>There will always be a delay when waking up from sleep, which will limit the potential savings when the sleep period is as short as 10 us. By default the wakeup time from System ON mode is about 6us, but you can reduce this to about 2,5us if you enable the &#39;constant latency&#39; mode before you enter sleep. In constant latency mode the sleep current will be quite high (around 1mA), but there might some minor savings to be had.</p> <p>As mentioned by Wilhelmsen it&#39;s definitely worth a try :)</p> <p>Regards Torbjørn</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/2797?ContentTypeID=1Tue, 18 Feb 2014 19:08:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5131c447-29db-46bb-b13a-2ef2b6606d07wlgrd<p>It&#39;s worth a try ;)</p><div style="clear:both;"></div>