Lpc2000

--- In lpc2000@yahoogroups.com, "Karl Olsen" <kro@p...> wrote:
> --- In lpc2000@yahoogroups.com, "Leighton Rowe" 
<leightonsrowe@y...> 
> wrote:
> > Yeah you're right on that one. Playing with PCONP didn't help 
much. 
> > Interestingly, the EINT1 worked on P0.3 (low-active mode) without 
a 
> > pullup but I might as well use one just incase. Hopefully 
> P0.2,3,&14 
> > are the only 3 pins I need to worry about.
> 
> Check carefully in the datasheet which pins have internal pull-up, 
> internal pull-down, or nothing.  Have just been bitten by that :-(

Better yet, check the newest manual.  The newest datasheet wrongly 
says that only P1.16-P1.25 have pull-up.  In fact, all of P1 have 
pull-up.

Karl Olsen