On Sun, 2006-12-10 at 21:40 -0500, James Nick Sears wrote:
> For a dollar or two, you can be free of all of these issues with a  
> little powered clock.  Four pins, Vdd, GND, CLKOUT, and something  
> else (probably an enable-like function) and you are good to go.   
> 40MHz, no problem.  Just set your clock config flag to EC (external  
> clock).  Available in through-hole or SMT (actually the surface mount  
> version is smaller or at least similar to the SMT crystals I used to  
> use).
> 
> I've spent way too much time already in my young life fighting with  
> crystal oscillator circuits.  Anything of mine in the future that  
> isn't intended for mass mass production (and maybe stuff that does)  
> will have a powered clock, unless there is some reason not to that  
> I'm not aware of.

Well, they are reliable. The cons however are:

- cost
- size

and, most importantly for many applications:
- power usage

Check the specs, they can suck ALOT of power for a function as simple as
providing a clock.

TTYL

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