MICROELECTRONIC SYSTEMS NEWS



FILENUMBER: 7017
BEGIN_KEYWORDS
Text Physical Design CMOS L-EDIT Uyemura
END_KEYWORDS
DATE: july 1994
TITLE: Text on Physical Design of CMOS ICs Using L-EDIT by Uyemura


Text on Physical Design of CMOS ICs Using L-EDIT by Uyemura

(Contributed by Nathan Wilbur of PWS Publishing)

PHYSICAL DESIGN OF CMOS INTEGRATED CIRCUITS USING L-EDIT by  John
P. Uyemura, Georgia Institute of Technology. Copyright c 1995 PWS
Publishing Company. ISBN: 0-534-94326-8. 240   pages,  hardbound.
Available August 1994.

This text is the first book/software  package  that  enables  en-
gineering students and professionals to perform full IC layout on
an inexpensive personal computer. The Student Version of  L-Edit,
included  with  the  book  on a 3.5-inch disk, is a full-featured
layout editor that  runs  on  MS-DOS  compatible  computers  with
minimal  hardware  requirements (640K RAM, a mouse, and an EGA or
better color monitor). L-Edit allows the user  to  implement  the
physical  design  of  an integrated circuit at the silicon level,
and provides output for circuit simulation on SPICE.  The  entire
process  of  chip  design  --  once  the  exclusive  province  of
workstation- based CAD systems -- can now be performed on a PC.

Database files for many standard MOSIS CMOS processes are provid-
ed  on  the disk, including Orbit and HP 2.0 and 1.2-micron tech-
nology base definitions. The program provides for circuit extrac-
tion  (translating  the layout to a SPICE- compatible text file),
and design-rule checking using predefined MOSIS rules or  custom-
designed  sets.  It also features a unique cross-sectional viewer
that constructs the side view layering from the  layout  --  this
viewer helps users visualize the link between layout drawings and
the device structure. Circuit designs created on the Student Ver-
sion  of L-Edit can be translated to GDSII or CIF format for sub-
mission to a fabrication foundry using the  Professional  Version
of L-Edit.

L-Edit is extremely easy to use, with a typical learning time  of
30 minutes or less. However, the program is powerful, with all of
the features needed to perform large designs, including tools for
creating  polygons  and wires in 90- degree, 45-degree, and arbi-
trary non-Manhattan modes; cell  definition  and  instancing  for
hierarchical  design; duplication and copying tools; and a mouse-
driven user interface with drop-down menus.

The accompanying book consists of two parts. The first part   be-
gins  with an introductory chapter on the installation and use of
L-Edit, followed by a tutorial  on  designing  digital  CMOS  in-
tegrated circuits. This consists of separate chapters on fabrica-
tion, layout fundamentals, MOSFET's, logic  circuits,  and  basic
system design concepts. The text discussion is supported by exam-
ples and exercises linked to the L-Edit program. The second  part
consists  of  a chapter-length, condensed reference manual for L-
Edit commands, and individual chapters detailing the use of layer
generation,  the cross-sectional viewer, the design-rule checker,
and the circuit extractor.

To order, contact:

   Nathan L. Wilbur, Marketing Manager
   PWS Publishing Company
   20 Park Plaza
   Boston, MA 02116
   TEL: (617)-542-3377
   nathan_wilbur@pws.com

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