Thanks for comments, my calculations are based on specification (in internet). As I said, they claim 18 days with 3200mAh, so this means 432 hours with 3200mAh, and this gives 7mA . My tablet is Ployer MOMO 9 variant, built around March 2012. I can try to measure the battery current in various modes. But this can be misleading because it might not represent the real capabilities of the A10.<div>
I am pretty sure that idle will never be so high as cnxsoft claims, my tablet manages several days on stand by. If it was 0.34A it will hardly last 10 hours. I suppose that this 0.34A is for mele or other non-portable device.</div>
<div><br></div><div>Tom, you are saying that in suspend to RAM A10 is completely off, and this 5mA are mainly RAM self refresh consumption? Is there something easy that can be done to bring it a little bit down - different RAM chips (DDR3L), different power management chip instead of AXP? In general, could we find out how this 5mA are spread over subsystems and decide which one makes sense to optimize?</div>
<div><br><div class="gmail_quote">2012/7/13 Tom Cubie <span dir="ltr"><<a href="mailto:mr.hipboi@gmail.com" target="_blank">mr.hipboi@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5">On Fri, Jul 13, 2012 at 1:55 PM, krasi gichev <<a href="mailto:krasimirr@gmail.com">krasimirr@gmail.com</a>> wrote:<br>
> I am looking into applying A10/A13 into automotive (entertaiment)<br>
> application. Is anybody aware how low the current consumption can go in mode<br>
> where OS is sleeping? I mean not powered off, but booted, ready to wake up<br>
> in several seconds, but doing nothing else beside waiting for GPIO (button)<br>
> wake up command? Something like sleep mode of the android tablets.<br>
> My best estimation is based on specs of one tablet that says that it has<br>
> stand by time of 18 days (with 3200mAh battery). This resolves to around 7mA<br>
> stand by consumption (this should be A10 + AXP209 total).<br>
</div></div>When your tablet is bought? Because the new firmware of A10/A13 tablet<br>
supports suspend to ram, which will power off the cpu and only leave<br>
the dram in self refresh mode when standby. Which is typical 5mA for<br>
512MB ram of two chips.<br>
><br>
> Any input on this?<br>
><br>
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