> >>Some people think one of those gnds is for analog and the other is for > >>digital, and should be used that way. However, I just measured several > >>chips with my DMM, and got about 2 ohms between the gnd pins - which is > >>actually same reading as between the 2 Vdd pins. So looks like they are > >>simply tied together inside the chips. Personally, I always use a pcb > >>trace between them. > > > > >Semiconductors have semi-conductance, what means, when you have > two separate > >conductors on one die, the die connect them together. > > > > I do not understand this answer at all. Are you saying that the 2 ohms > I measure between the gnd pins is not an internal connection, but rather > a "sneak" path through the die? I don't think so. Going to other pins > you measure resistance in the Mohm range. I am sure there is a direct > internal connection between the gnd pins. Those pins might be connected to two different places on the die and the resistance you measure probably the resistance of the path from one pad to the other. If the two wires were connected together you would read much less than 2 ohms, at least I would think. TTYL -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads