Lpc2000

I would be nice to see the actual ADC/IO "Schematic" so one could see what
on earth is going on...

Regards
lasse


-----Original Message-----
From: lpc2100_fan [mailto:lpc2100_fan@...] 
Sent: 27. december 2004 02:03
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: LPC213x, analog port question.



Hi 
as far as I know the previous LPC devices had this problem but the
LPC2130 series does not. I heard it somewhere but have not had the
change to verify it. 
Bob

--- In lpc2000@yahoogroups.com, "Anton Erasmus" <antone@s...> wrote:
> On 23 Dec 2004 at 23:13, lp2000c wrote:
> 
> > 
> > 
> > The LPC213x has 16 pins which CAN be configured as an ADC input.  Does
> > this mean that I can't apply more than 3.3V to any of these pins,
> > without corrupting ADC operation?
> 
> On a design I did, where I only wanted to use one of the ADC inputs,
and connected
> the other lines to 5V devices, I got absolutely garbage readings
even though the actual
> AD channel I was using never went above 3.3V. So it appears that the
statement below
> is correct.
> 
> Regards
>    Anton Erasmus
> 
> 
> > --- In lpc2000@yahoogroups.com, "Richard" <richas@y...> wrote:
> > > 
> > > Note:  5V on any pin that CAN be configured as an ADC input will
> > > corrupt the ADC conversion values.
> > > 
> > > Richard
> > 
> > 
> > 
> > 
> > 
> > 
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> -- 
> A J Erasmus






 
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