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PICList Thread
'Re[2]: UV erasable versions'
1997\02\24@093456 by Craig Knotts

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    Granted, but it sure makes it tough to re-program a part if the code
    protect bit is still set....


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Subject: Re: UV erasable versions
Author:  Kieran Sullivan <spam_OUTksullivanTakeThisOuTspamBFSEC.BT.CO.UK> at Internet
Date:    2/24/97 9:19 AM


Setting the Code Protect bit when you program a UV Erasable or even the EEPROM
versions of the PIC controllers will not prevent them from being erased. The
Code Protect is only there in an attempt to stop you reading back the correct
code in the chip.

Kieran


----------
From:   Andrew Warren[SMTP:.....fastfwdKILLspamspam@spam@IX.NETCOM.COM]
Sent:   24 February 1997 06:48
To:     PICLISTspamKILLspamMITVMA.MIT.EDU
Subject:        Re: UV erasable versions


Those "JW" parts are UV-erasable, so long as you don't turn on the
"Code-Protect" bit when you program them.

-Andy

=== Andrew Warren - .....fastfwdKILLspamspam.....ix.netcom.com
=== Fast Forward Engineering - Vista, California
===
=== Custodian of the PICLIST Fund -- For more info, see:
=== www.geocities.com/SiliconValley/2499/fund.html

1997\02\24@144719 by Craig Knotts

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    One additional caveat, the 16C5x parts CAN be erased even if the code
    protect has been set.  These are the oldest parts and don't include a
    shield over the code protect bit.


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Subject: Re: UV erasable versions
Author:  Andrew Warren <EraseMEfastfwdspam_OUTspamTakeThisOuTIX.NETCOM.COM> at Internet
Date:    2/23/97 10:48 PM

Each of the PICs comes in many packages... You can get them in
plastic DIP, SOIC, SSOP, etc.  One of the options is "Ceramic
Windowed DIP", signified by a "JW" suffix after the part number.

Those "JW" parts are UV-erasable, so long as you don't turn on the
"Code-Protect" bit when you program them.

-Andy

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