Cadence Advanced Package Designer Suite Automates Stacked-Die Wirebonding

3/13/2003 - Cadence Design Systems, Inc. (NYSE:CDN) announced new capability for designing stacked-die packages, whose growing popularity is the result of manufacturers' need to increase functionality in an ever-shrinking design envelope. Stacked-die packages are particularly common in cell phones, digital cameras and hand-held devices, which require the faster turnaround, higher levels of integration and lower costs found in system-in-package (SiP) solutions.

"Stacked-die packaging is pervasive in the wireless and memory markets because it facilitates both portability and performance," said Bret Zahn, vice president of worldwide design and characterization, ChipPAC Incorporated. "ChipPAC, as the market leader in stacked-die package design, assembly and test, sees the new Cadence capability as a way to be more productive and to provide the highest-performance, most cost-effective design solutions to our customers."

"Using stacked-die packaging allows designers to free up valuable real estate on both the package and the board," said Charlie Giorgetti, corporate vice president and general manager of the Cadence PCB Systems Division. "But, designing an interconnect plan for a stack of chips is a complicated process. Our new technology is designed to simplify this process, and help manufacturers get products designed and in volume production quickly."

Today, virtually all stacked-die packages use wirebonding for the interconnect to the substrate; a single package design may have hundreds of wires and multiple-bond patterns for various die combinations on a single substrate. To address this complexity, the new wirebonding capability automates the design process and addresses reliability issues through advanced wire spacing and automated realignment features. Integrated into the Cadence Advanced Package Designer Suite, this capability supports all phases of design, from concept to manufacturing file output. Important features include the ability to bond as many die as desired; use different spacing rules for each die and quadrant; and create multiple bonding patterns so that one substrate can handle multiple-die combinations. Cadence Advanced Package Designer also provides the capability to combine flip-chip and wirebond die in same design.

U.S. Pricing and Availability
The stacked-die automated wirebonding capability is part of Cadence Advanced Package Designer version 15.0, expected to be available in the second quarter of 2003. The product, which starts at a U.S. list price of $27,000 for a one year license, is supported on Solaris, HP UX, IBM AIX platforms, XP Pro, Windows NT and 2000. Pricing outside of North America is available by contacting a local Cadence office or distributor.

About Cadence
Cadence is the largest supplier of electronic design technologies, methodology services, and design services. Cadence solutions are used to accelerate and manage the design of semiconductors, computer systems, networking and telecommunications equipment, consumer electronics, and a variety of other electronics-based products. With approximately 5,300 employees and 2002 revenues of approximately $1.3 billion, Cadence has sales offices, design centers, and research facilities around the world. The company is headquartered in San Jose, Calif., and traded on the New York Stock Exchange under the symbol CDN. More information about the company, its products and services is available at

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