Hi Dave,

Thanks -- I've seen those graphs. At least it gives me an idea of the range.
Thanks for your reply.

Best regards,

Ken Pergola

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Dave Dilatush
Sent: Tuesday, July 15, 2003 5:10 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: Output impedance of PIC18F452 I/O pin


Ken Pergola wrote...

>Has anyone seen any reference to what the output impedance is of the
>PIC18F452 output drivers?
>(I/O pin configured as an output)
>
>I've been looking through the PIC18F452 data sheet and have not been able
to
>find any reference to this.

My rev. of the datasheet (DS39564B) has graphs on pp. 299-300 of
the PIC's Vol vs. Iol and Voh vs. Ioh.  From these, it looks like
the concept of output "impedance" wouldn't mean a whole lot, as
the I/V curves are very nonlinear and also shift with temperature
and supply voltage.

DD

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