At 01:56 PM 8/30/01 +0100, you wrote: > >Whoops foot in mouth time - of course there is no ESD diode to Vcc, because >the programming voltage goes in here (RED) :) (/RED) Mmm... good point, they specifically refer to voltage spikes below Vss. Perhaps they are concerned about parasitics in long wires running to a reset switch or something along that line. I regularly tie the output of the BOR circuit directly to /MCLR with a very short conductor along a ground plane. Can't see any reason to add the extra resistor... Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads