Thanks Jinx, you are always very kind to me!

The fact is I'm trying to prevent a possible error when analysing a
possible output.
In this case, the pic is receiving an analogue signal which must be
convert to digital and then transmit it via serial 232 to a PC to show
signal behaviour on screen.

I need to know whether the moment this ADC block is no longer working,
on screen will be showing no signal or a signal built by all zeros...

Is there any way to detect this block is not working properly before
start working with it??

Many thanks for your time and I hope I have been clear enough.

Carol.

On 6/23/07, Jinx <joecolquitt@clear.net.nz> wrote:
> > Some of you know in which cases an ADC converter block
> > in a PIC 16F873A can stop working???
>
> It used to work but doesn't any more ?
>
> Help us out with some information please, like what's connected
> to the ADC and what else is in or near the circuit
>
> > In case this block is damaged, which would be the output when
> > receiving an analog signal??
>
> > Could it be possible have all "0" as output, no matter the signal
> > to convert is?
>
> If the pin has been damaged by too high or too low voltage then
> probably the analogue won't get to the ADC and "0" output (maybe)
>
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