Serial interfaces (was Re: Any former Psion 5 owners out there?)

Chuck Guzis cclist at
Tue Jul 20 16:24:54 CDT 2010

I have to confess that when I design a standalone microcontroller 
project, the interface almost always is RS232.  Most uCs have UART 
functionality with data rates up to at least 250Kbps.  I don't have 
to fool with complicated protocols and the interface is very useful 
for debugging.  MAX232s or their equivalent are cheap and easy to 

RS232 means that I can hook it to just about anything.

I've got a pile of USB->RS232 adapters for those crippled systems 
that can speak only USB of some flavor.


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