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PICList Thread
'UV Erasure and ESD Protection'
1998\01\12@203306 by Sean Breheny

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Hello fellow piclisters,

I have seen some people on the list comment that chips undergoing UV
erasure should be protected against ESD. I find this strange because UV
light tends to ionize air and other materials and it would seem to me that
it therefore lessens the chances of static buildup because it tends to make
things more conductive. Also, I use the Datarase II to erase PICs and
EPROMs, etc, and it doesn't provide enough clearance between the chips pins
and the snap on cover for someone to put any normal amount on conductive
foam on the pins. I suppose that one could push the foam down until it was
level with the pins but I have never seen foam on a chip in this way. I
would be interested if anyone has any more info on this.

Sean

+--------------------------------+
| Sean Breheny                   |
| Amateur Radio Callsign: KA3YXM |
| Electrical Engineering Student |
+--------------------------------+
http://www.people.cornell.edu/pages/shb7
spam_OUTshb7TakeThisOuTspamcornell.edu
Phone(USA): (607) 253-0315

1998\01\12@205352 by tsk3000

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Sean Breheny wrote:
>
> Hello fellow piclisters,
>
> I have seen some people on the list comment that chips undergoing UV
> erasure should be protected against ESD. I find this strange because UV
> light tends to ionize air and other materials and it would seem to me that
> it therefore lessens the chances of static buildup because it tends to make
> things more conductive. Also, I use the Datarase II to erase PICs and
> EPROMs, etc, and it doesn't provide enough clearance between the chips pins
> and the snap on cover for someone to put any normal amount on conductive
> foam on the pins. I suppose that one could push the foam down until it was
> level with the pins but I have never seen foam on a chip in this way. I
> would be interested if anyone has any more info on this.
Yeah, I've got a DataErase II also and it came with a really cool little
book describing all that, and seperating facts and myths.  It also
described the history of EPROMS and whatnot; it is a _really_ handy
book.  Didn't you read it when you got your DataErase?


--
~Keith
.....tsk3000KILLspamspam@spam@Prodigy.Net
http://pages.prodigy.net/tsk3000/

1998\01\12@231829 by Herbert Graf

picon face
> -----Original Message-----
> From: pic microcontroller discussion list
> [PICLISTspamKILLspamMITVMA.MIT.EDU]On Behalf Of Sean Breheny
> Sent: Monday, January 12, 1998 20:29
> To: .....PICLISTKILLspamspam.....MITVMA.MIT.EDU
> Subject: UV Erasure and ESD Protection
>
>
> Hello fellow piclisters,
>
> I have seen some people on the list comment that chips undergoing UV
> erasure should be protected against ESD. I find this strange because UV
> light tends to ionize air and other materials and it would seem to me that
> it therefore lessens the chances of static buildup because it tends to
make
> things more conductive. Also, I use the Datarase II to erase PICs and
> EPROMs, etc, and it doesn't provide enough clearance between the chips
pins
> and the snap on cover for someone to put any normal amount on conductive
> foam on the pins. I suppose that one could push the foam down until it was
> level with the pins but I have never seen foam on a chip in this way. I
> would be interested if anyone has any more info on this.

       I have no idea about this, (I use the 16C84, but how would aluminum foil
work? It is flat and should fit. Just an idea. TTYL

1998\01\13@010558 by Alvin Tan

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       I am new to PICs, and currently using PIC16F84 and would like to
eventually program some PIC12C508.  I am curious if anyone would
recomend this UV Eraser DATARASE II from Walling Co.  Which one should I
get ER2 or ER3?  Is it worth it to get ER3 which has a built-in 2-8
minute timer and time-out beeper?

       Thank You!

Alvin Tan

Sean Breheny wrote:

{Quote hidden}

1998\01\13@014957 by Andrew Warren

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Alvin Tan <PICLISTspamspam_OUTMITVMA.MIT.EDU> wrote:

> I am curious if anyone would recomend this UV Eraser DATARASE II
> from Walling Co.

   Alvin:

   I would; the Datarase II works just fine for low-volume erasing.

> Is it worth it to get ER3 which has a built-in 2-8 minute timer and
> time-out beeper?

   Yes, definitely.

   -Andy

=== Andrew Warren - @spam@fastfwdKILLspamspamix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499

1998\01\16@095636 by Larry G. Nelson Sr.

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I have both and I like the timer / beeper to let me know when it is "done".
The only thing I have had problems with on these is the little safety
switch on my ER2. The little plastic lip that tells it the lid is closed
didn't make contact after a while. Easy to eliminate the problem but I
would have liked something a bit more rugged. The eraser works faster than
many of the big "PRO" erasers and I can carry it to clients with me. I
found it worth every penny.


At 10:06 PM 1/12/98 -0800, you wrote:
{Quote hidden}

Larry G. Nelson Sr.
RemoveMEL.NelsonTakeThisOuTspamieee.org
http://www.ultranet.com/~nr

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