Lpc2000

The LP2xxx are 5 volt tolerant, but this does not mean that the MAX202 
will work with the 3.3 volt signals from the LPC. Did you check the 
datasheet of the MAX202 if it will accept 3.3 volt input signals?

Richard.



Rodrigo Cesar da Silva Martins wrote:

> I can't make this thing work at all!!! Serial interface works fine,
> because I tested it using Hiperterminal (I'm using a MAX202, 5V, but
> I'm sure LPC is 5v tolerant). P0.14 and RESET pins go low, after a
> while reset goes high and after that P0.14, the way it should be, I
> think. I receive a data through the serial but the board doesn't
> respond. I'm using the Philips Flash Utility V2.2.1 and it works fine
> in my MCB2100 board. There is something I am doing wrong? I'm using a
> MOSFET transistor instead of BC850 used in MCB2100, but I don't think
> it's a problem because the high e low levels are just fine.
>
>
>
>
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