Real Time Clock DS1307

Hi there!.

I am using a RTC DS1307 with a PIC18F252 and already write and read the RTC=B4s registers by I2C protocol; nevertheless when I consult the seconds register, I notice that the RTC works 9 times slower of the normal thing; my theory is that it is due to the crystal that I am using...., which seems to me strange is the slow thing...

Well, here come my questions...

  • Some one know if in fact this device (DS1307) is so sensible when using an unsuitable crystal?

  • Which other factor could influence in this behavior?

  • Could be a firmware problem? (I don=B4t think so)

Many Thanks


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