Electronics Forum | Fri Aug 29 08:37:04 EDT 2003 | davef
From a data sheet [we know it's not Cypress ]: AMD PALCE16V8 Family EE CMOS 20-Pin Universal Programmable Array Logic Programming and Erasing The PALCE16V8 can be programmed on standard logic programmers. It also may be erased to reset a previously c
Electronics Forum | Fri Aug 29 07:09:14 EDT 2003 | paulrm
I have recently purchased some cypress manufactued PALCE16V8 PLCC20 devices only to find that before they can be programmed, the devices have to be erased. We purchased them unprogrammed??? any thoughts..
Electronics Forum | Wed Jan 16 21:37:48 EST 2008 | davef
If this component is laser marked, you could just spray conformal coat on it and the marking will disappear.
Electronics Forum | Fri Jan 11 00:32:16 EST 2008 | johnlee9210
Prior to packing the boards, we cover the marking on the IC by dispensing epoxy on top it. This is a way to protect our design so no one can copy it. We have a lot of boards and the optr takes a long time doing it manually. im thinking of using a pne
Electronics Forum | Wed Jan 30 04:23:25 EST 2008 | chs
What type of conformal coating spray ? Is it permenant or washable ?
Electronics Forum | Mon Jan 14 23:02:52 EST 2008 | davef
You don't mention any particular IC or manufacturer or marking method. However, most IC marking is done with lasers these days. The laser actually alters the encapsulation so the only way to erase the marking is to remove the encapsulation. Otherwise
Electronics Forum | Wed Jan 30 20:07:56 EST 2008 | davef
Any ol' acrylic or urethane will work. It's possible to remove these conformal coatings. We've never removed coating from components to determine if the marking is still unlegible
Electronics Forum | Wed Jan 16 07:49:40 EST 2008 | bandjwet
John: As one of the previous replies indicated a LASER of the proper wavelength (organic materials) will do this job. Contact BEST at http://www.solder.net offline to see if this is an option you want to pursue. Other methods include labels and m
Electronics Forum | Fri Jan 18 19:02:45 EST 2008 | arun2382
I agree, except you need to be careful with the depth of cut since it may affect the package internal connections (wirebonds) -A
