The ohmmeter reads 780Ohms between Vss and Vdd on the dead f628, a healthly
PIC has infinite resistance.
----- Original Message -----
From: "Code" <code@MXHUB.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, March 10, 2002 3:12 AM
Subject: Re: [PIC]: PIC heating up


> It's now dead.
>
> Before it died, the code ran as expected, albeit with the PIC running very
> hot. Power Supply is of the correct polarity, 200Ohm resistor between MCLR
> and VCC.
>
> I disconnected every I/O port and it was still running hot, the case of
> sinking or sourcing too much current can be disregarded.
>
> What could be the caused?
>
>
> ----- Original Message -----
> From: "Dave Dilatush" <dilatush@COMCAST.NET>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Sunday, March 10, 2002 2:22 AM
> Subject: Re: [PIC]: PIC heating up
>
>
> > Code wrote...
> >
> > >RS232 transceiver to a 16F628. It is supposed to read the parallel ADC
> > >output and serialize the data before sending to the computer.
> > >
> > >The PIC in this case is running very very hot, i could barely touch it
> for a
> > >sec. What could be the cause?
> > >
> > >this is the ASM its running.
> >
> > [assembly language code snipped]
> >
> > Forget the code; your PIC isn't running any program if it's so hot it
> > burns your fingers.  These things normally run stone cold.
> >
> > You've got something connected wrong; possible your power supply
> > polarity is reversed.  Go back and check your connections, CAREFULLY.
> >
> > DD
> >
> > --
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> >
> >
>
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>

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