> does anyone knows a low power (<1uA, <3V) pulsgenerator IC
> that runs at 2 Hz (0.1% accuracy) ?
>
> thanks,
> Stef Mientki

http://home.clear.net.nz/pages/joecolquitt/lowpower.html

A minute or two accurate per year, which is in the low ppm. Even
the nastiest $1 plastic clock has an excellent time-base IC

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