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Rabbit Semiconductor® Ships the New Rabbit® 4000 Microprocessor

March 30, 2006 Davis, CA – Rabbit Semiconductor is proud to announce the availability of the Rabbit 4000 microprocessor. The Rabbit 4000 is the newest addition to the legendary Rabbit line of microprocessors, which offers new and improved features from integrated Ethernet to hardware DMA. These new features make the Rabbit 4000 a clear choice for today’s demanding embedded applications of connectivity and control.

Building upon the highly successful Rabbit 3000 microprocessor, the Rabbit 4000 is available in two RoHS compliant packages, 128-pin LQFP and 128-pin TFBGA configurations. The new features include integrated 10Base-T Ethernet, hardware DMA, 16-bit memory device support, and page-mode memory device support. Features also include hardware security features, hardware breakpoints, variable-phase PWM, and up to 40 GPIO with up to 4 levels of alternate pin functions. More than 500 new instructions were added to increase the processing speed and efficiency.

Programming the Rabbit 4000 microprocessor is simple with the industry-proven Dynamic C® software development system. Our successful integration of hardware and software substantially reduces development time and cost. In addition, the Rabbit 4000 microprocessor is programmable in-circuit without costly in-circuit emulators, using a simple programming cable provided with the Rabbit 4000 development kits. Integrated features of the Rabbit 4000 allow embedded engineers to develop smaller designs, enabling for diverse implementation.

The Rabbit 4000 will be available beginning April 4th, 2006. The first development platform to use the Rabbit 4000 capabilities will be on the RabbitCore RCM4100 Development Kit ($259 Qty1). The Rabbit 4000 is competitively priced below $9 in volume. For more information please contact Rabbit Semiconductor at T: 530-757-8400, F: 530-757-8402, E: rabbit@rabbit.com.

Rabbit Semiconductor
Rabbit Semiconductor, a Digi International® brand (NASDAQ: DGII), is a global provider of high-performance 8-bit microprocessors and development tools for embedded control, communications, and Ethernet connectivity. A sister division of single-board computer and software manufacturer Z-World®, Rabbit Semiconductor introduced the popular Rabbit® 2000 microprocessor in 1999 and the Rabbit® 3000 in 2002. The industry award-winning RabbitCoreTM line of microprocessor core modules was introduced in 2001. Rabbit Semiconductor offers customers a complete embedded design system, including low-cost development kits and comprehensive technical support for both hardware and software issues. Rabbit Semiconductor is a member of the Fabless Semiconductor Association and is located in Davis, Calif., 70 miles east of San Francisco.

For more information, visit Digi's Web site at www.digi.com, or call 877-912-3444 (U.S.) or 952-912-3444 (International).

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