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Audi / Volkswagen select austriamicrosystems' FlexRay transceiver for Electronic Control Units

austriamicrosystems' AS8221 FlexRay Standard Transceiver provides industry leading system stability

(PresseBox) (Unterpremstaetten, Austria, ) austriamicrosystems (SIX: AMS), a leading global designer and manufacturer of high performance analog ICs announced that Audi / Volkswagen has selected the AS8221 FlexRay transceiver for use in their Electronic Control Units (ECUs). The AS8221 fully conforms to the FlexRay Electrical Physical Layer Specification V2.1 Rev B and is targeted for use in ECUs connected to the permanent battery supply where the transceiver manages the ECU powerup via its inhibit output pins.

The results of the required EMC validation of the AS8221 at the certified test laboratory IBEE in Zwickau / Germany showed the excellent performance during DPI (Direct Power Injection) immunity tests over the complete frequency range. High system stability enables faultless communication in the harsh automotive environment without usage of expensive measures against electromagnetic interferences.

FlexRay is an automotive network communications protocol designed to be faster and more reliable than CAN or TTP. These transceivers provide the interface between the digital logic and the copper cable transmission. With transmission rates up to 10 Mbit/s, FlexRay provides 20 times the speed of unshielded twisted copper cable used in cars today.

Key features of the AS8221 FlexRay transceiver include a high common mode range to ensure excellent EMI, an interface for Bus Guardian or supervision circuits, automatic thermal shutdown protection, integrated power management, two inhibit pins for external voltage supply control, local wakeup input and remote wakeup capability. The AS8221 supports 12 and 24 V systems with very low sleep current and supports 2.5, 3, 3.3, and 5 V microcontrollers.

"The AS8221 FlexRay transceiver is attractive to automotive manufacturers such as Audi /Volkswagen since it provides system stability through its unmatched immunity," commented Harald Gall, Product Manager Automotive at austriamicrosystems. "We focused on minimizing the asymmetrical delay of the transceiver in order to solve one of the car makers' key challenges of providing a stable network."

The AS8221 is available in SSOP 20 package and has an operating temperature range of -40 to 125 °C. Pricing is less than $1.60 for 250 thousand piece quantities. Further information is available at www.austriamicrosystems.com/Flexray/AS8221

About austriamicrosystems AG

austriamicrosystems is a leading designer and manufacturer of standard and customized highperformance analog ICs in the areas of power management, sensors & sensor interfaces and mobile infotainment. Complemented by its full service foundry services, the company focuses on the communications, industrial & medical and automotive markets. austriamicrosystems leverages more that 28 years of expertise in low power and high accuracy to provide industryleading products, operating worldwide with more that 1,000 employees with its own stateoftheart manufacturing and test facilities. austriamicrosystems is listed on the SIX Swiss Exchange in Zurich (ticker symbol: AMS). For more information, visit www.austriamicrosystems.com

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