Steve Underwood wrote: > > Garst R. Reese wrote: > > >The connection examples for these two supply voltages all show them > >externally tied together. Can they actually be separate supplies with > >different voltages? I assumed they could be, but got worried when I > >could not find an example. > > > >Thanks, > > > > Garst > > > > > They can be separate, as long as they stay within the overall limits of > the device. Tying them directly together is a bad idea if you want the > best results from the analogue section. There should really be some > filtering between the two. The current consumption of the 430 is > generally low enough (unless you pull lots of I/O pin current from Vcc) > that a 10ohm to 50ohm resistor plus a 0.1uF and a 10uF electolytic can > be used as an RC filter to the AVcc pin. With careful grounding it > woorks wonders for the ADC12 :-) > > Regards, > Steve Hi Steve, Murata, AVX, and Kemet all show 0805 10uF 6V 10% Ceramic capacitors. Would these require the extra 0.1uF?
Thanks, Garst
