[time-nuts] Motorola Oncore UT+ firmware upgrade & backup power questions
hmurray at megapathdsl.net
Sun Mar 15 06:27:06 EDT 2015
attila at kinali.ch said:
> A CR2032 is a quite huge coin cell. An NVRAM module does not use much power
> once Vcc goes to zero. In todays low power modules it's in the order of
> 100nA max specified. You can assume it to be somewhere in the range of 10nA
> (probably package leakage limited) and 1uA (something has gone wrong or very
> old module). ...
GPS also needs the time, so add on a 32KHz clock.
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