Article View: sci.electronics
Article #6752Re: GAL LOGIC
From: LEEK
Date: Mon, 14 Sep 1992 18:24
Date: Mon, 14 Sep 1992 18:24
74 lines
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3591 bytes
In article <1992Sep13.184958.6583@adobe.com>, pngai@adobe.com (Phil Ngai) says: > >In article <92254.103444LEEK@QUCDN.QueensU.CA> <LEEK@QUCDN.QueensU.CA> writes: > >>I can't just go into a store and ask for 16V8 and expect the product > >Given your expectations, no. But you can't ask for a 16R4 and get >a generic product either. You can't ask for a 4 meg EPROM and get >a generic product. You can't even ask for a 1 meg DRAM and get >a generic product. >The problem is, you don't understand what GAL means, or what 16V8 >means. 16: Max # of inputs V : variable (GAL only) 8 : Max # of outputs The problem is more I have a different definition for GAL. When I say GAL I mean both the functionality & programming specs for GAL. I have the programming specs for GAL sitting in a blinder right here. The PALCE ships cannot be programmed with the GAL specs and AMD is not a 2nd source for the line of product call GALs from Lattice. Furthermore the Engineer at AMD did agree that PALCE is NOT GAL. If you have a Universal programmer, this is a non-problem. On the other hand if you built something that only program GALs, than that's a big problem. At least 2 other people have the same problem emailed me. >>I wanted. On the other hand I did specify GAL16V8 and got PALCE16V8. >>I could have asked my Credit Card company to cancel payment as I >>didn't get what I specified. a Cyrus 486 is the same as an Intel 486? > >Yes, you did get what you specified, you just didn't specify >what you wanted. The recept says 2 03AMD GAL16V8A-15LP The parts I received say PALCE16V8H-15PC/4 on the chip. GAL16V8 should have been sufficient. I have no problems with GAL16V8 from either Lattice, NS (and SGS Thomas). All of them have GAL16V8 on the package. On the other hand if the recept did say PALCE16V8, I am quite helpless. (I am not going to bother with $30 worth of chips) I wouldn't have made the same mistake if they put PALCE16V8 as a different product than GAL16V8 (they did that for PEEL) in the mail order catalog. I guess if I have an AMD databook along with their programming specs, I wouldn't make the same mistake. A company like Electrosonics lists alternative suppliers with the same part # separately. Given the limited info, I can only do so much. >But what does it MEAN? Until you understand, you are going to >keep getting in trouble like this. May be you can enlighten me here... What's the meaning then ? Most of the chips (analog & digital) are generic in the sense that a NE555 is similar enough to a LM555. That's true for products with all the specs published. It's a bit difficult when the companies stopped publishing all their specs (ie the programming spec, some even without the fuse map). It means the mail order people have a different naming convention and extra care should be used in the PLD area by both the consumers and suppliers. >My opinions are my own. My mistakes are my own, but they are not the only ones made here. K. C. Lee Elec. Eng. Grad. Student
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<92258.142438LEEK@QUCDN.QueensU.CA>Path:
arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!yale.edu!qt.cs.utexas.edu!cs.utexas.edu!torn!news.ccs.queensu.ca!qucdn!leekReferences:
<92253.131631LEEK@QUCDN.QueensU.CA> <1992Sep9.200458.8595@adobe.com> <92254.103444LEEK@QUCDN.QueensU.CA> <1992Sep13.184958.6583@adobe.com>Show Full Headers
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!yale.edu!qt.cs.utexas.edu!cs.utexas.edu!torn!news.ccs.queensu.ca!qucdn!leek From: LEEK@QUCDN.QueensU.CA Newsgroups: sci.electronics Subject: Re: GAL LOGIC Message-ID: <92258.142438LEEK@QUCDN.QueensU.CA> Date: 14 Sep 92 18:24:38 GMT References: <92253.131631LEEK@QUCDN.QueensU.CA> <1992Sep9.200458.8595@adobe.com> <92254.103444LEEK@QUCDN.QueensU.CA> <1992Sep13.184958.6583@adobe.com> Organization: Queen's University at Kingston Lines: 74