Lpc2000

Hello Peter,

the short answer is, yes they are.

On page 23 of the Data sheet you can find limiting values 
http://www.semiconductors.philips.com/acrobat/datasheets/LPC2104_2105_2106-04.pdf
Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
VDD1.8 Supply voltage, internal rail -0.5 +2.5 V
VDD3 Supply voltage, external rail -0.5 +3.6 V
Vi DC input voltage, 5 V tolerant I/O pins -0.5 6.0 V

You mentioned the limitation, the ports can not drive 5V but can
accept external 5V signals. You might want to limit the current with a
resistor though if your 5V source can deliver many mAs

Cheers, Bob

--- In lpc2000@yahoogroups.com, "Peter Homann" <peter.homann@a...> wrote:
> Hi,
> 
> I am trying to determine whether the I/O pins on the LPC2016 are 5V
tolerant
> when in input mode.
> 
> Can somebody point me in the right direction.
> 
> Thanks.
> 
> 
> Peter Homann
> mailto:Peter.Homann@a...
> Adacel Technologies Limited,
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