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London, October 25 2001 – Fujitsu Microelectronics Europe’s growing family of well-proven, 32-bit CAN-microcontrollers, designed within the company’s European Microcontroller Design Centre (EMDC), encompass devices providing both high and mid-end automotive solutions targeted at applications including dashboard, body-electronics and information display.

Via its new MB91F364G, Fujitsu now offers a 32-bit single CAN interface device, for applications demanding a small footprint. This new device satisfies today’s requirement for higher performance coupled with “platform”-based solutions, where many compatible devices are used for a wide variety of applications.

The MB91F364G is fabricated in 0.35µm geometry embedded flash technology and built around the established Fujitsu “FR”-core, a 5-stage pipelined RISC core with 16 general-purpose registers and internal Harvard structure. The core is supported by 16kB data RAM and a bit search unit. Program code and constant data are located within a 256kB embedded flash ROM, which can be programmed in-circuit using a serial link or via parallel programmers. The ROM offers a minimum 10,000 write/erase cycles.

The device has a host of on-chip peripherals including UARTs, I2C and serial synchronous interfaces, in addition to the CAN interface, 16-bit reload timers, input-capture/output-compare units and real time clock, as well as a 12-channel ADC and 8 external interrupts. This wealth of peripherals enables the MB91F364G to be used in a wide range of applications from automotive to industrial. The device shares many of the software modules and operating systems with the established MB91360 series microcontrollers, for which libraries already exist, making software development extremely efficient.

Particularly important for single-chip applications is the new on-chip “background debug support unit”, which helps software development and debugging of the final application without the use of in-circuit emulator systems.

This unit provides a number of instruction and data-breakpoints including mask and range-functionality.

Used together with the appropriate background software, this unit speeds up application development and offers the ability to debug in the final application.

Today’s systems demand higher clock frequencies, high-density PCB layouts with more complex functions and low manufacturing costs, while EMC is becoming ever more important for the functionality and security of electronic devices. The new MB91F364 integrates a clock modulator unit, which reduces noise by spreading the energy of the MCU over a wide frequency range. The unit significantly reduces EME (Electro-Magnetic Emission), enabling EMI-approval standards to be easily met first time without the need for time-consuming and costly re-designs.

Housed in a compact QFP120 package, the MB91F364G will be available in sampling quantities during early Q3 2002. An evaluation device, the MB91FV360 is available now, enabling application and software design to be started immediately.


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