> can trigger the suicide SCR (tm) and the chip will rapidly > self-destruct (melting of bonding wires or whatever). I believe > this is the situation that Microchip is alluding to A technical manual should do more than "allude" IMHO I note that descriptions of Mclr on the F87x and F628 say that the pin has a noise filter (although the block diagram of the reset circuitry is the same for the 84/87x/628), which increases the time for a valid Mclr from 1us (F84) to 2us. Has the Mclr problem now been addressed then or is the filter not enough ? If a resistor is considered mandatory then couldn't it be added to the die ? -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads