Looking for some one to point me in the right direction again.

I want to provide date/time functionality for my users. I do have power “all the time” provided by a battery; but I don’t want to keep the cobra 2 running all the time b/c of its current draw.

Does anyone know of a low power IC out there which would keep time for me?


You just have to ensure that RTC pin is power supplied.

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Add RTC battery and hibernate the Cobra II. You can wake it up with an RTC alarm or external interrupt.


Another option if you have the Cobra 2 WiFi board and assuming you are connected to a network is to get the time from a time server. I have this on one project where I don’t currently have a battery fitted. :slight_smile:

Do you have any measurement on a hibernated Cobra II board power usage?

@ njbuch - Sorry, I do not.