i.MX ProcessorsのトピックRe: imx6ul evk - suspend-on-ram consumption

imx6ul evk - suspend-on-ram consumption

giulianofranche — Tue, 15 Mar 2016 11:33:29 GMT

Hi,

we are making some power consumption tests on the imx6ul evaluation board, and we found something which seems a bit odd. When the board enter the "suspend-on-ram" mode, the total consumption of the board goes from 150 mA to 50 mA.

50mA seems quite a lot for this mode. Do we have to modify anything to optimize the power consumption when in deep-sleep mode?

I read the application note AN5170 (http://cache.freescale.com/files/32bit/doc/app_note/AN5170.pdf?pspll=1 ), and the results are very different.

Our image has been made with yocto.

Regards

Re: imx6ul evk - suspend-on-ram consumption

igorpadykov — Tue, 15 Mar 2016 12:15:14 GMT

Hi giuliano

AN5170 did not measure whole board consumption and it

has many other components which add current. Measured

VDD_SOC_IN, VDD_HIGH_IN, DDR3L and other processor power

domains with all processor modules are disabled.

Peripheral chips power consumption is not included in measurements.

Best regards

igor

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Re: imx6ul evk - suspend-on-ram consumption

giulianofranche — Tue, 15 Mar 2016 12:18:15 GMT

Oh, my bad!

Is the hibernation mode available for the imx6ul (suspend-on-disk)? And if not, is it in NXP roadmap for this chip?

Re: imx6ul evk - suspend-on-ram consumption

igorpadykov — Tue, 15 Mar 2016 12:21:45 GMT

available low power modes are provided in

Table 14. Low Power Mode Current and Power Consumption

i.MX6UL Datasheet (rev.0, 8/2015)

http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6ULCEC.pdf

Best regards

igor