[_CD6_]<dragon7.0>Documentation>DragonCMOSDesignRules>DragonCMOSDesignRulesD.tioga!1

DRAGON CMOS DESIGN RULES

DRAGON PROJECT — FOR INTERNAL XEROX USE ONLY

Dragon CMOS Design Rules

Jeff Hoel

Dragon-87-xx Written August 21, 1985 Revised March 14, 1987

Abstract: The purpose of this document is to specify a set of design rules for CMOS VLSI circuits which can be used by designers of Dragon (and other) chips to assure that they can be fabricated by multiple facilities.

Keywords: design rule, CMOS, VTI

FileName: /Indigo/Dragon/Documentation/DragonCMOSDesignRules/

DragonCMOSDesignRulesD.tioga

XEROX Xerox Corporation
Palo Alto Research Center
3333 Coyote Hill Road
Palo Alto, California 94304

Dragon Project - For Internal Xerox Use Only

Contents

1. Introduction

ChangeLog

1. Introduction

On March 13, 1987, in a meeting of members of the Dragon project, it was decided to discontinue further work on this document. The Dragon EU and IFU are permitted to follow the design rules of Revision C of this document. All other Dragon chips are required to follow the latest version of the VTI design rules [6]; i.e., they are required to track all changes to VTI's design rules as they occur.

Designers following the VTI rules are referred to Dragon CMOS Advisory Comments [11], a document which suggests other things the designer can do to make a chip more desirable in some way. The advisory comments are similar to design rules, but designers are not required to follow them.

1.2. Revision History

Original: August 21, 1985.

Revision A: October 11, 1985

Updates to reflect use of VTI's new rules [6]

Revision B: (never formally released) ~ December 12, 1985

Minimum via size reduced to 2 x 2 lambda.

Larger surrounds for non-minimum-size cuts and vias.

Current limit rules added.

New N-well rules.

Brand new format!

And more.

Revision C: January 26, 1986

Pro forma.

Revision D: March 13, 1987

Terminate work on this document.

Delete most of the document.

Reference Dragon CMOS Advisory Comments.

1.3. References

1.3.1. Two-Micron CMOS Design Rules

[6] CMOS Lambda Layout Design Rules for Advanced Lithography; Greg Spadea; VLSI Technology Inc.; Document Number 02-ECLA-2, Rev *F, January 10, 1987.

1.3.2. Advisory Comments

[11] Dragon CMOS Advisory Comments; Jeff Hoel; Xerox internal document
/Indigo/Dragon/Documentation/DragonCMOSDesignRules/

DragonCMOSAdvisoryComments.tioga, March 14, 1987.

ChangeLog

Hoel, March 14, 1987 12:09:13 pm PST

See Revision History.