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On 13/07/2012 14:40, cnxsoft wrote:
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On 13/07/2012 12:55, krasi gichev wrote:
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cite="mid:CAEpu82VvkmghkpNOpUVXr7uRYXec9_LKQa=zXpJoxmCU=tHdNg@mail.gmail.com"
type="cite">I am looking into applying A10/A13 into automotive
(entertaiment) application. Is anybody aware how low the current
consumption can go in mode where OS is sleeping? I mean not
powered off, but booted, ready to wake up in several seconds,
but doing nothing else beside waiting for GPIO (button) wake up
command? Something like sleep mode of the android tablets.
<div> My best estimation is based on specs of one tablet that
says that it has stand by time of 18 days (with 3200mAh
battery). This resolves to around 7mA stand by consumption
(this should be A10 + AXP209 total).</div>
<div> </div>
<div>Any input on this?</div>
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In <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://rhombus-tech.net/allwinner_a10/:">http://rhombus-tech.net/allwinner_a10/:</a><br>
<br>
<pre><code> u-boot idle, 0.23A@5V = 1.15W
Android idle. 0.34A@5V = 1.7W
Android busy navigating some web page: 0.55A@5V = 2.75W
Android 2.3.3 + youtube + video 720p = ~4.6W
Android 2.3.3 + SATA HDD + video 1280p = ~7.3W
Ubuntu 12.04 (headless) + SATA HDD + deluge (torrent client) + </code>minidlna (dlna server) = ~5.0W-6.5W (sometimes max 7.8W)</pre>
In the car is powered off, you ought to power off your A10/A13
device as well or it could drain the batteries if the car is
parked for some time. I've read they have to do that for
automotive infotainment system, so they have to optimize the boot
time.<br>
</blockquote>
I forgot to mention those idle figures could probably be improved
using power management, but I don't know the details.<br>
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