This course describes the tools and methods of developing parameterized cells (pcells) in SKILL, the Cadence Design Framework II extension language. A major portion of the course is dedicated to an introduction and investigation of relative object design (ROD), a new technology providing powerful, flexible procedures for defining simple and complex layout objects and their relationships to each other.
Based upon a firm foundation in relative object design, pcell development will be explained in stages, beginning with creation of sizeable transistors and evolving into a fully parameterized inverter layout.
o Understand how relative object design (ROD) SKILL functions can help you create layout objects and parameterized cells
o Examine the architecture of ROD objects
o Explore the versatility of ROD objects
o Create and manipulate ROD objects interactively
o Learn the concepts involved in developing pcells with SKILL
o Define and use pcells
o Make your pcells process-independent by applying technology file rules
o Create a parameterized inverter layout
o Create pcells with stretch handles
o Create pcells with auto-abutment for the Virtuoso XL Layout Editor
o Library Developers
o Layout Designers
o Cadence SKILL Programmers
o CAD Developers
o This course is suited for anyone interested in programmatic cell development
o Hands-on experience with Cadence Design Framework II and the Virtuoso Layout Editor is required, and the student should be familiar with SKILL.
o The ideal student will be comfortable with a UNIX workstation and have a good working knowledge of at least one text editor.
o Welcome and agenda
o Introduction to parameterized cells
o Introduction to relative object design
o Exploring relative object design
o Creating and using SKILL parameterized cells
o Creating and using SKILL parameterized cells (continued)
o Going further with SKILL pcells
o Creating and using qcells (optional)