Aras Vaichas wrote:
> Unfortunately the simple coulomb counting chips have the disadvantage
> that the CPU has to be running to accumulate the pulses. Of course,
> the pulses could wake the CPU from a suspend mode, but I'd rather not
> do that just to add "one" to a counter ...
>   

Could you have the coulomb-counting chip connected to a tiny
microcontroller, or even a dedicated hardware counter?  Then the main
CPU wouldn't need to wake as often, it could just ask the
microcontroller over I2C, or read/reset the hardware counter.


b.g.

-- 
Bill Gatliff
b...@billgatliff.com


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