Robert Nansel wrote: >SNIP< >Intel appnote AP-125 "Designing Microcontroller Systems for Electrically >Noisy Environments" is also a good reference Sorry, I don't have an URL >for this one; maybe somebody else out there does... Yes, it is at: http://developer.intel.com/design/auto/mcs96/applnots/210313.HTM It is worth the read, IMHO. Best regards, Michael