Lpc2000

At 10:45 AM 12/11/04 +0000, you wrote:
>Unfortunately I cannot obtain any RS232 Driver for 3.3V, yes for 5V.
>In My LPC board I have 5V, so I was thinking about adding some
>transistor and convert the 3.3V from the LPC2106 to 5V and viceversa
>for the RX pin. I know this is not the best solution, but I think it
>could work. If not, what about making a Level shifter with
>Transistors? Does anybody have a schematic, or can help me with this?

In addition to all the pointers to 3V level convertors I would add;  Why 
not just use a 5V level convertor since you have the 5V available?  Run 5V 
to you level convertor and then hook it's Rx and Tx lines to the micro.  If 
your level convertor is TTL compatible then it's inputs should match the 
drive output.  Check the VIH rating of your convertor.


Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III