----- Original Message -----
From: "Spehro Pefhany" <speff@INTERLOG.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, August 06, 2001 7:10 PM
Subject: Re: [PIC]: Input protection V-I curve


> At 02:28 PM 8/6/01 -0400, you wrote:
> >I would like to see a careful measurement of it in the regions of
interest
> >(below Vss and above Vdd):
>
> Ok, Bob:-
>
> -I did some measurements above Vdd on a single piece of 12C509JW
> -Programmed it to run on all internal and to just sit there with all
inputs.
> -Connected all pins but power and GP0 to Vss through a 500 ohm resistor.
> -Vdd 5.00V

I am assuming the voltages recorded were measured at the PIC pin and not on
the other side of the 100R.

It sure looks like a typical Si P-N junction to me.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics