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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

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Re: [lpc2000] LPC2129, analog port question.

2004-11-29 by Anton Erasmus

On 29 Nov 2004 at 12:29, digtalfreak wrote:

> 
> 
> I am using the LPC2129 in an application and I need to know if the
> analog port will be damaged if the port gets more than V3A at any
> time. The manual says that the voltage must not be over V3A or the
> analog input readings will be invalid. Does that mean that they will
> be invalid forever or only for the moment where the voltage is over
> V3A?
> 

The pins are supposed to be 5V tolerant, hence my assumption is that they should
be able to handle up to 5V. The A/D converter is designed, so that it's full range is
only V3A volts, hence an input above this voltage will give invalid A/D results.

Regards
   Anton Erasmus


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-- 
A J Erasmus

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