AIN max voltaje Input

Cual es el maximo voltaje que se puede aplicar a las entradas analogicas
(AIN) del MINI2440. Los esquematicos muestran solo la conexion a 3.3v... 5
voltios es posible?

What is the maximum voltage that can be applied to the analog inputs (AIN)
of MINI2440. The schematic shows only the connection to 3.3v ... 5 volts is
possible?

Grab the datasheet off the downloads page.

Whereas, some GPIO is 5V tolerant I suspect you are limited to 3V3 on the
ADC inputs.  

Good luck

I've read the datasheet and makes no reference to the maximum voltage that
can withstand MINI2440 ADC. Just to mention that it connected to a 3.3V
reference voltage. I need to accurately measure a variation of 0-5V. I
would try connecting 5V but I have fear of burning or MINI2440 port.

Looks like you are right.  The only thing that seems relevant is a analog
core voltage rating of 3.3V  

I know on the AVR atmega series that you have access to the supply pin for
the ADC, which allows you to change it.  Doesn't look like you have that
freedom on the S3C2440.  

When I looked last time at which I/O was 5Volt tolerant am I sure I found
some that where, although a search on <6.5> and <tolerant> didn't show
anything up this time.

I get the impression that the ADC is really meant only for running the
touchscreen and if you want to do some serious measurements then an
out-board ADC is warranted.

Good luck