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Lpc2000

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Re: LPC2xxx GPIO Outputs Born LOW

2004-10-27 by Leighton Rowe

> This could actually be a great problem I my self have created 
several
> PLC controllers where I wanted the output to be high on birth and 
when
> its undetermined a weak pull up insured the state.

Currently there are 2 Output pins on my prototype board that 
requires pullup resistors to work, or else I'll have no way of 
controlling them. 

> Using additional logic, transistors etc. all costs money and I 
actually
> think It's sad that Philips didn't make their hardware "the right 
way"
> from the start...

Point taken on the cost factor...unfortunately, most mcu's aren't 
that perfect yet because of cases where the firmware just can't get 
around critical hardware problems. That's the "give-and-take" nature 
of the design game.

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