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.


______________________________ Reply Separator _________________________________
Subject: Re: UV erasable versions
Author:  Andrew Warren <fastfwd@IX.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