Lpc2000

Hello David,

Do the CAPS have the right polarity ?
Pay attention: Pin 6 is the - side of the CAP, GND this time the '+' side.
Same thing for Pin 2: - side to VCC 3.3 and + side to Pin 2.

But usually when something above is wrong, the CAPS go hops (really, i saw
tantals burning...).

Have you used 3.3V as supply voltage for the MAX and the CAPS ? But i had a
look at Maxim website and MAX3232 can also be driven by 5V. So this is not a
problem.

The RS232 and TTL side is not exchanged ?

Sorry,

      Martin


----- Original Message ----- 
From: "David Willmore" <willmore@...>
To: <lpc2100@yahoogroups.com>
Sent: Wednesday, January 07, 2004 10:43 PM
Subject: [lpc2100] MAX3232 problems?


>
> I finally have one of Leon's lpc210x proto boards assembled.
> The problem is the MAX3232 runs warm and seems to be drawing
> 150mA or so--it varies a bit.
>
> The lpc2106 runs at ambient and has detectable 10MHz on its
> clock pins.  Removing the MAX3232 from the board causes it
> to use very little current ~10mAh, so I'm assuming the CPU
> is okay.
>
> Is there some common failure mode these things experience?
> I'm pretty sure there was no reverse voltage, etc.  Could
> a poorly connected cap do this?
>
> I *really* want to talk to this thing, but if the serial
> interface won't work....
>
> Cheers,
> David
>
>
>
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