microcontrolller short circuit?!!

[poohpary]

    hi...i use an atmega32 in my pcb board..my circuit was fine but i dont know what happened that after turning on the supply for (the last time) micro got so hot . with a multimeter in diode check mode it seems tracks of +Vcc and GND are connected (no power is applied to circuit)...and it seems 3 pads of micro that were programed to be input (i have not used them) are connected to Vcc or GND.so i dont know whats wrong...with micro getting hot can i say that short circuit is done inside of micro? and how can i be sure nothing is wrong with my pcb board so the problem will be solved by exchanging micro?
    is there any body to help me plz?!

[David_AVD]

Is there a chance you applied too much voltage or reversed the polarity - even for a split second?

[poohpary]

no...not reverse not too much...i am sure...(thanks for your reply )

[tiborsimon]

I would check the pcb, and the soldering again. If everything is fine, it could be a latchup..

[David_AVD]

Maybe a quick picture of the PCB and setup would help.

[poohpary]

its kinda complicated...i have 6 different voltage supply  in my circuit...but the problem is with +5V and the GND...pcb picture would not help cause it needs a lot of explanation

[David_AVD]

All the more reason to explain it in that case.  It quite possibly has a bearing on what caused the issue.