Inquiry Regarding Indefinite Off State During RTC-Based Intermittent Operation on Verdin iMX8M Mini

[makasujan]

Dear @alvaro.tx

@alvaro.tx

You are correct, but yes, I do recommend using Vcc_Backup specially for your use case. Normally it will just keep the time if the power is off but it might also protect in supply instabilities.
If you are relaying in the RTC for critical operation, I think it justifies the use of using it. It might also save the investigation

The recommended battery from Mallow datasheet(BAT1) is CR1025(30mAh), what would be ideal lifespan of the battery coin considering there is always Vcc and also leakage current from the diode? will it last more than five years?

@alvaro.tx

Depending on the application, you might also consider adding a supercapacitor to protect the supply for a few seconds.

So we can also add supercapacitor instead of coin battery for voltage instabilities! how do we add supercap in the board?

reference: I have gone through this post about rtc increasing battery life
Thank you for the guidance and support :).