I hope Bernard Seront was joking when he wrote:

> At 06:00 PM 8/1/96 -0400, you wrote:
> >Talk of sunlamp erasers reminds me of once being told that OTP devices
> >(without windows !) could be erased using the magic of 'X rays'.
>
> What about the foolish idea of drilling the case to make a window! Am I
> dreaming too?
> If someone has useless chips, I have a diamond drill facility here. I can
> give it a try.
[...]

You probably won't need a diamond drill for OTP devices, since they're
in PLASTIC packages.

Although it's true that the circuits are the same in both the OTP and
windowed versions of a chip, I learned at a Microchip seminar that the
"JW" dies undergo two extra "layer" operations which the OTPs don't.
I'd guess that these may have something to do with protecting them from
chemical exposure to the clear epoxy... but I'm only guessing.  It may
not be a good idea to expose the OTP die to the open air.  ;-)

And as for accessing the leads of broken pins, Jeez!  C'mon guys!
I've been installing and pulling 40-pin PIC16C65's two or three times
per day for more than a month without even bending a pin ...and I'm
using the handle of a teaspoon as an "extraction tool"!  How on earth
are you guys managing to break them off?!?

Rick Miller
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Raportisto demandis de Mahatma Gandhi, "Sr-o. Gandhi, kio vi pensas pri
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