> The clock source depends on the settings of the CKSEL fuses. If you change the xtal > frequency or clock mode then timer operation is affected proportionately. While using any external resonator or crystal, make sure that the CKOPT bit is checked. This selects the "rail to rail" oscillator mode (AKA NORMAL!) Otherwise, you are using a "vittoz" low power oscillator, and this can cause some VERY wierd problems, or work just fine with 1000 units and fail miserably next week.
Message
Re: Clock, Timer, Xtal, Serial andTOSCI confusion
2006-01-14 by Dave VanHorn