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From: Graham Petley (graham.petley AT vlsitechnology DOT org) Date: Sun Sep 28 2003 - 02:21:54 EDT
Hallo Charles, The metal should be 4 lambda wide and 4 lambda spacing. I looked at the cell in Magic and it was twice the width of the poly, which is 2 lambda wide. I also looked at the original CIF in Alliance Dreal and the metal was 4um wide. I think that if there was some scaling error reading the CIF into magic, there would be many other DRC errors apart from the metal! Best Regards, Graham Petley --- cfk <cfk AT pacbell DOT net> wrote: > I have been working this morning with Graham's library and I > have a couple > of observations and a couple of questions. > > The first observation is that in working with his cell > iv1v0x05.mag which is > the smallest and simplest cell. I seem to have DRC errors for > "metal1 width" > and "metal1 spacing". These are mosis rules 7.1 and 7.2. I am > using two > different technology files. The first is > "SCN5M_DEEP.12.tech27" and the > second one is "SCN6M_DEEP.09.tech27". These are the .25um and > .18um tech > files, that near as I can tell are most appropriate for .25um > and .28um > designs at this time. > > They both say the metal1 spacing and metal1 widths need to be > 3 lambda and > they are 2 lambda in the cells themselves. I cant tell if > this is a cell > issue or a technology file issue and would appreciate some > guidance. > > My questions relate to the technology files themselves. > > 1. Is "Is SCN5M_DEEP.12.tech27" the appropriate technology > file for .25um > studies?" > 2. Is "Is SCN6M_DEEP.09.tech27" the appropriate technology > file for .18um > studies?" > 3. What is the appropriate technology file for .13um studies? > 4. What is the appropriate technology file for .09um studies? > > I want to comment Graham for his effort to get as far as he > has. I think > trying to create a library that is scalable between .25um, > .18um, .13um and > .09um is a marvelous thing and I want to understand and help > as much as > possible. > > Charles > ===== Graham Petley ASIC Specialist and Consulting Engineer Metzstrasse 14, 81667 Munich, Germany Phone +49-89-6349-7630 Mobile +49-177-282-5072 http://www.vlsitechnology.org/
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