<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>High 4.7 mA power consumption on nrf51, SD110</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/22006/high-4-7-ma-power-consumption-on-nrf51-sd110</link><description>Hi, 
 during normal operation, my device shows a power consumption of 4.7mA.
Normal operation is: 
 
 accelerometer (lis2dh) detects a shake and wakes up the nrf51 via GPIO toggle 
 nrf51 gets via SPI the incoming accelerometer data 
 nrf51 does</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 15 May 2017 09:31:01 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/22006/high-4-7-ma-power-consumption-on-nrf51-sd110" /><item><title>RE: High 4.7 mA power consumption on nrf51, SD110</title><link>https://devzone.nordicsemi.com/thread/86360?ContentTypeID=1</link><pubDate>Mon, 15 May 2017 09:31:01 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:5e7d3573-8c21-4472-be56-b02e0b0ad68e</guid><dc:creator>J&amp;#248;rgen Holmefjord</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;This is a normal current draw when the CPU is active. The CPU current draw will depend on your configuration, but &lt;a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/cpu.html?cp=2_2_0_6_1#topic"&gt;the values are given in the documentation&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Are you doing any power management when you are doing this normal operation, to put the device in sleep when possible? 4-5 seconds is a long time to keep the CPU active, and if you have 1000 occurrences of this every day, your battery won&amp;#39;t last long.&lt;/p&gt;
&lt;p&gt;Could you post some code examplesshowing your operation or upload your project? We might be able to give some pointers on how to decrease the current consumption.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Jørgen&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>