[Diy_efi] Here's a little micro to build on...

[Torbjörn Forsman]

But a 272-pin BGA is not so easy for a DIY project, using a such package 
means that the PCBs have to be assembled and soldered on a proper 
production line. I am somewhat reluctant to using BGAs for automotive, 
military and other demanding applications as the package and solder 
balls are entirely stiff. There is nothing like the soft bent pins of a 
QFP or PLCC that can relieve thermal stresses etc.

Anyway, many people have experienced trouble with high-performance A/D's 
integrated on a microcontroller chip. That might be noise, 
ground-bounce, various features that need many silicon revisions until 
they work reliably...
If one wants to avoid problems with the A/D, then it is better to use a 
separate A/D chip. As this chip can be manufactured with processes that 
are more optimised for analog performance, chances are better that it 
will work well.

Best regards

Torbj?rn Forsman

joevitek at cfl.rr.com wrote:
> ---- Daniel Nicoson <A6intruder at myo-p.com> wrote: 
> 
>>Do you think there are enough A/D channels?
> 
> 
> Dang, 37 channels of A/D!!
> 
> Might not be enough... ;)
> 
> --
> joe
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