[Arm-netbook] Sleep (stand by) power consumption of A10/A13 device?

[cnxsoft]

On 13/07/2012 14:40, cnxsoft wrote:
> On 13/07/2012 12:55, krasi gichev wrote:
>> 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.
>> 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).
>> Any input on this?
>>
>>
> In http://rhombus-tech.net/allwinner_a10/:
>
> |  u-boot idle, 0.23A at 5V = 1.15W
>   Android idle. 0.34A at 5V = 1.7W
>   Android busy navigating some web page: 0.55A at 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) +|minidlna (dlna server) = ~5.0W-6.5W (sometimes max 7.8W)
> 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.
I forgot to mention those idle figures could probably be improved using 
power management, but I don't know the details.
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