In message <004b01c64857$2335a270$0601a8c0@up>, dated Wed, 15 Mar 2006, Moshe Valdman <[email protected]> writes
>I have a 8051 compatible microcontroller (Silicon labs) on a board >I had cases at customer sites where the internal RAM and even (more >rarely) internal flash was "erased". Seems like this was caused by >noise in those sites (e.g. other machines switched on\off) >Any idea how noise could be coupled into the microcontroller? How can I >minimize such an effect? 'Switched on and off' suggests power-line disturbances. These can cause glitches on the d.c. supplies to the chips OR direct capacitive coupling form mains circuits to data circuits. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
