i.MX ProcessorsのトピックRe: Freescale IMX6 cortex A9 1GHZ RTC consumption

Freescale IMX6 cortex A9 1GHZ RTC consumption

neerajchhabra — Mon, 08 Dec 2014 05:28:51 GMT

Hi, I am using Congatec QMX6 module which has Freescale IMX6 cortex A9 1GHZ single core processor. I want to provide a coin cell for the RTC backup so what would be the current consumption for the RTC? As stated by congatec it is 1.45UA at 20 degC and by freescale datasheet it is 41UA. Please help me to calculate proper consumption.

Re: Freescale IMX6 cortex A9 1GHZ RTC consumption

igorpadykov — Mon, 08 Dec 2014 06:29:03 GMT

Hi Neeraj

typical value is 15-20uA, however at high

temperature limit it may be as given in

IMX6DQCEC Table 8. Maximum Supply Currents.

It can not be calculated/predicted by any formula.

Best regards

igor

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Re: Freescale IMX6 cortex A9 1GHZ RTC consumption

neerajchhabra — Mon, 08 Dec 2014 06:48:25 GMT

Hi Igor,

I am confused which value I will take. In Table 8 for

VDD_SNVS_IN

, it is 275uA under normal conditions?

Re: Freescale IMX6 cortex A9 1GHZ RTC consumption

igorpadykov — Mon, 08 Dec 2014 07:58:57 GMT

Hi Neeraj

this is at high temperature limit (95C for

Standard Consumer ).