> Van: Jinx <joecolquitt@CLEAR.NET.NZ>
> Aan: PICLIST@MITVMA.MIT.EDU
> Onderwerp: Re: [EE]: I2C Real Time Clock
> Datum: vrijdag 13 oktober 2000 0:22
>
> Philips PCF8593. Cheap, 8-pin, ext 32kHz or 50Hz, low power,
> 240 bytes free RAM for micro use

I've got a PCF8583 here, and have some problems with it.  Whenever the
voltage swings, so does the accuracy of the clock.  I'm feeding it with 5
volts thru a Diode, but have got a 3.4 volts NICAD connected to it thru a
Diode too.  Whenever I've got the clock calibrated for one voltage, the
other voltage let's it either run too fast or slow.

Is there a standard way to get rid of this phenomenon ?

Regards,
  Rudy Wieser

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