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Lpc2000

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Re: LPC2138 GPIO

2005-05-02 by Gus

I have just tested the P0.10 on my system and it is 3.3V!! I am 
using LPC2138

Did they fix the P0.10 issue on new chips?

Thanks,

Gus

--- In lpc2000@yahoogroups.com, Diana Medeiros <dimed77@y...> wrote:
> Thanks guys, but now I realized there might be a problem with the 
power supply. I'll check all the I/O pins again, after this issue is 
solved.
> Di
> charlesgrenz <charles.grenz@s...> wrote:
> 
> Do any of the other I/O lines that are configured as an Output 
exhibit
> the same problem or is it just that one (P0.10). 
> 
> I asked Philips in the beggining about the internal pull-ups for 
the
> 2138 and the response was as follows:
> 
> "
> 1) pull-up resistors are in the 10s of K - We should have an exact
> value after analyzing process data.
> 2) Port 0 does have pull ups but note that i2c pins do not.
> "
> 
> regards,
> Charles
> 
> --- In lpc2000@yahoogroups.com, "Bill Knight" <BillK@t...> wrote:
> > Ouch!
> > 
> > -Bill
> > 
> > 
> > 
> > On Wed, 27 Apr 2005 13:34:13 -0000, tah2k wrote:
> > 
> > I saw the same thing when I was evaluating the 2138. I was told 
by the 
> > Phillips FAE to use external pull-ups when the I/O pin is 
configured 
> > as an output. The internal weak pull-up works fine when the I/O 
is 
> > configured as an input.
> > 
> > 
> > --- In lpc2000@yahoogroups.com, "dimed77" <dimed77@y...> wrote:
> > > 
> > > Hi,
> > > 
> > > Does the LPC2138 P0.10 pin have special electrical specs.? 
When 
> > > configured as GPIO, it goes to only 2V when in logic '1' 
output, no 
> > > load. Tried with 2 different chips already.
> > > Could someone give me a hint?
> > > 
> > > Thanks :)
> > > 
> > > Di
> 
> 
> 
> 
> 
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