For one thing...if an app note says..use a low ESR 1uF cap across these pins, its a pretty safe bet that you need to, since it is an app note from the manufacturer.  Read and understand the datasheet Solar..it will really get you pretty far.  Also look for other app notes dealing with the chip..any chip you use.  Its the same as the (pick your favorite car maker) you should add oil to the crankcase.  Sure, you might get pretty far without it, but at some point it will come back to you, for not following the recomendations.


--- On Thu, 4/16/09, Olin Lathrop <olin_piclist@embedinc.com> wrote:

> From: Olin Lathrop <olin_piclist@embedinc.com>
> Subject: Re: [EE] 1.0 uF Decoupling Cap - A Must?
> To: "Microcontroller discussion list - Public." <piclist@mit.edu>
> Date: Thursday, April 16, 2009, 5:53 AM
> davidcou@aol.com wrote:
> > The 1uF is a minimum recommendation but I always
> recommend a 0.1uF
> > additionally as close to the IC.
> 
> Always!!?  That's just silly.  Do you specifiy the
> species of dead fish to
> wave over it too?
> 
> 
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