gnupic@linuxhacker.org

Thomas Lundin wrote:
> 
> Matthew Bowles wrote:
> > The 14000 is well used in data acquisition, I nearly used it on a
> > project of mine, but ended up using the 16F877 for the extra RAM and
> > I/O. the 14000 basically sells itself by offering extra peripherals like
> > the temp. sensor. But essentially it is nothing special. same
> > instruction set as 16XXXX, I don't think the A/D is 16 bit unless you
> > play around and fiddle. here's a good way of getting higher resolution
> > A/D from your basic 8-bit A/D channels; use over-sampling. Take say 100
> > samples, add the results, and divide by 100. gives you better resolution
> > the more samples you take, but isn't as effective on very quiet (low
> > noise) signals.
> >
> > my advice is take a look at C76 and C77 and f876/7. You'll find good
> > trade off oppurtunities for more RAM, more I/O, less pins, different
> > peripherals, etc..
> >
> > matt
> 
> I checked 16F877 out after the talk about it here and with your
> resolution enhancer it might work in my project. I've already made the
> pcb though, so I'm planning on giving the 14000 a chance first.
> 
> Thomas

I checked up a bit.. the 16-bits of A/D in the 14000 needs external
capacitors, or you're limited to the 8-bits you started with. but
there's nothing stopping you using the over-sampling on the 14000, along
with a external capacitor. there's also room for 12, 14 and maybe 10 bit
A/D.

Matt