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Lpc2000

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

Message

5v 3,6 v IO and GPIO speed issues!

2004-12-16 by dalenkarl

> That's not always an option.  Let's say 5V is coming from a 
switcher.
> Also, what happens on power down.  Depending on drain currents, 
3.3V 
> (with smaller cap) might discharge before the 5V (with large cap).

I asumed linear regulating "only".

For switched systems, well sometimes there is a enable pin
on the switcher wich can be used with a time delay cirquit.

Im starting to feel baad about the whole issue, im starting
to think that this 5v, 3,3v and speed of the io ports are a 
very bad design error philips have made!

A CPU that works at 60Mhz with Io that can do at best 2.5-3Mhz????
I consider this serious crap!

With this speed in some applications makes 
the LPC2106 completely useless!! 

Reg
KD

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