On Feb 17, 2008 5:20 PM, wouter van ooijen wrote: > > Series resistance would server you better for ESD protection. > > Are you sure? That does not seem logical to me. Why not logical? A series resistor can help protect the MCU quite effectively. If you want better protection, maybe ESD protection devices can help. http://www.ce-mag.com/archive/03/ARG/dunnihoo.html Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist