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FlexRay controller eyes driver-assistance apps

Posted: 03 Apr 2007     Print Version  Bookmark and Share

Keywords:FlexRay controller  driver-assistance applications  FlexRay protocol 

Fujitsu Microelectronics America Inc. (FMA) has introduced the MB91F465XA, a FlexRay controller. Designed for driver-assistance applications, the device is built around a Fujitsu FR 70 32bit CPU, with an internal clock speed of 100MHz and voltage range of 3-5.5V.

E-ray core
Based on the E-Ray core licensed from Robert Bosch GmbH, the device uses VHDL code certified by TÜV Nord, supports 2-channel and FIFO operations, and supports 218 different identifiers by providing more than 8KB of message buffer memory.

The controller enables FlexRay protocol implementation without the need for companion devices, providing an easy-to-use solution for automotive OEM, tier-one and third-party companies delivering tools and software for automotive applications or test equipment. The MB91F465XA complements standard automotive buses, including the CAN and LIN. FlexRay-based technology provides approximately 10 times the throughput of CAN, and is expected to gradually replace CAN as automakers and their suppliers adopt x-by-wire solutions. In addition to the two-channel FlexRay bus interface, one I²C, two CAN and three LIN-USART interfaces are incorporated onto the controller, enabling communication with all automotive bus systems.

Reusable software
The MB91F465XA is a member of the MB91460 series, so it is designed specifically to let engineers reuse their software across different family members and applications. The device operates from a single supply ranging from 3V to 5.5V. Internal frequencies of up to 100MHz are generated via the on-chip PLL using external 4MHz quartz crystals as the clock input. A total of 544KB flash memory with read-out protection and 32KB RAM is available, making the MB91F465XA meet AUTOSAR requirements.

Other features include hardware watchdog, 17-channel 10bit ADC, reload timer, stopwatch function and an RTC module that can operate on external 4MHz or 32kHz quartz crystals.

Samples of the MB91F465XA are available in 100-pin FPT packaging with prices starting at Rs.352.96 ($8.27) each.

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