A am using on "off the shelf" board. It has a MAX232. I attached a schematic AVR-P28 http://www.olimex.com/dev/images/avr-p28-sch.gif [Non-text portions of this message have been removed]
Message
Re: MEGA8 RS232
2007-03-10 by David Appleton
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Message
2007-03-10 by David Appleton