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2005-07-27
Fujitsu Microelectronics (Shanghai) Co., Ltd.


Latest launch of high performance 32 bit CAN internal MCU (Microcontroller Unit)

Accessory to 11 highest standard communication channels, enabling high speed top level processing


Shanghai, July 27, 2005 — Fujitsu Limited has successfully developed high performance 32 bit MCU MB91270 series, and samples will be available for sale from today. This series is suitable for the current widely used in-car network system world standard specification CAN (Note 1) and LIN (Note 2).

As this product is an accessory to 11 channel communication interface which are of the highest standard in this field, in 32 bit high performance CPU inner core, capable of a variety of high speed processing, it makes possible develop a control unit (Note 3) that further improves car security.

At present, with the wide use of in-car network, which is capable of conducting all kinds of operational controls, car performance improves continuously. In future, there will be higher requirement for car security, for example, people would hope that the car is capable of receiving information through a video camera or a radar, timely process information in order to control car speed and distance automatically.

This time, the micro control device MB91270 series developed by Fujitsu Limited just meets this kind of requirement, having the high performance 32 bit CPU inner core FR60Lite as an accessory to the I2C (Note 4) communication interface where data is exchanged between in-car network CAN, LIN and the storage device. The communication channels that use this accessory are 11 in total, which has reached the best standard in this field. The application of this product series can have high speed and high volume top level processing, which makes possible the development of a high security control unit.

Since 1998, Fujitsu Limited has been dedicating itself to the development of micro control units used for in-car network, the 16 bit CAN internal MCU has gained top market share in the world. We will further expand the series of 32 bit CAN MCU, to meet the development requirement of higher performance and better security control unit.

Selling price and date for sale

Product Name Sample Price (including tax) Sample Sales date
MB91F272 1,500 Yen 12 July 2005
MB91F272S 1,500 Yen 12 July 2005
  • • MB91F272 for dual system clock(CLOCK(5)) (main clock and sub-clock)
  • • MB91F272S for single system clock (CLOCK) (only has main clock)

Sales target

100,000 pieces per month (total of both product)

Features of this product series

  • 1. Accessory for high performance 32 bit CPU inner core
    Use RISC Series(6) (Note 6) CPU inner core FR60Lite which has the highest operating speed reaching 32MHz, capable of fast processing of input and output data.
  • 2. Accessory to 11 communication channels that are of highest standard within the field, having a variety of communication interfaces.
    Normally one control unit uses one micro control unit. With this one control unit, data from 11 channels can be processed.
Interface No of Channels Characteristics
CAN interface 1 Channel Use 32 bit information buffer(7)
Suitable for LIN's UART(8) 7 Channels Can have SPI(9) communication
I2C interface 3 Channels Can be used with standard model and high speed model
  • 3. Accessory to 24 AD exchanging channels used for inputting simulated signals from all kinds of sensors.
    Capable of obtaining 24 channel simulated signals from all kinds of sensors that are of control unit interfacing the airbag, car air-conditioning and ABS (Anti-locking Breaking System) etc.
  • 4. Accessory to hardware timer that is specially used by CPU operating monitor.
    Monitoring CPU's operating situation improves its reliability. Meanwhile, as it no longer requires an IC used specially by the timer, it helps reduce costs.
  • 5. Compatible to 16 bit micro control device MB90340A series pin.
    Compatible with our Company's special pin for 16 bit CAN internal micro control device MB90340A series power supply. Therefore, the same assembling base board can basically be used when the control unit is developed in order to reduce the development labour hours.

Appendix: Main specifications of MB91F272、MB91F272S

Series MB91F272 MB91F272S
The fastest processing command time 31.25 mms (Internal 32 MHz hour)
Clock Main Clock, Sub-clock Main Clock
Storage ROM 256KB(
256KB (flash storage)
RAM 10KB
External Bus Interface Address: 24 bit, Data: 16 bit, (only limits to multiplex)
Communication Function CAN 1 Channel
Suitable for LIN's UART 7 Channels
I2C 3 Channels
Simulated Function 10 bit AD converter 24 channels
Timer function 16 bit reload timer 3 channels
8/16 bit up-down timer 8 bit: 2 channels, 16 bit: 2 channels
8/16 bit PPG timer 8 bit: 16 channels, 16 bit: 8 channels
Input capture 8 channels
(output compare) 8 channels
Watch Dog Timer 1 channel
DMA control device 5 channels
External insert 16 channels
Supply Voltage 4.5~5.5V
Operating temperature -40 to 105 degree
Multiple pack LQFP (* Note)(100 pin, 0. 5 mm spacing, 14 mm angle

*Note: LQFP(Low-profile Quad Flat Package), a type of plastic multiple pack with an assembling height lower the 1.7 mm.

Controller Area Network. A type of in-car network serial communication method, mainly used with the odometer on the instrument panel, car body control (passenger sensor and air-conditioning etc), engine control etc. (The highest communication speed is 1MB per second.)
Local Interconnect Network. A type of in-car serial communication method, used with some rather easy control parts communication, such as side mirror, windscreen wiper etc. (The highest communication speed is 20KB per second.)
Control Unit: Control application processing systems such as car air-conditioning, airbag etc. The control unit interfaces through in-car network.
Inter IC Bus. A type of serial communication method defined by Phillip Company, having interfaces for signal exchange amongst multiple machines through 2 piece signal wiring. (For standard model, the highest communication speed is 100KB per second, for high speed model, the highest communication speed is 400KB per second.)
CLOCK:
Enabling a simultaneous processing signal of various electric wiring within the micro control device.
RISC Series:
Reduced Instruction Set Computer. A type of micro processor design specificaiton, having high speed processing through simplifying a single command.
information buffer:
Used within memory field of temporary storage and sending / receiving data.
UART:
Universal Asynchronous Receiver and Transmitter. Have simultaneous or non-simultaneous communication interface with external devices. The processor launched this time is also suitable for LIN.
SPI:
Serial Peripheral Interface. A type of serial communication method defined by Freescale, having data exchange through 1 or 2 pieces of signal wiring.

About Fujitsu Microelectronics (Shanghai) Co., Ltd.

Fujitsu Microelectronics (Shanghai) Co., Ltd. is a newly established company in China. This new venture is part of Fujitsu's ongoing strategy to strengthen its presence in the China semiconductor market. Being operational since October 30, 2003, Fujitsu Microelectronics (Shanghai) Co., Ltd. serves as a focal point for the design, development and sales of Fujitsu's semiconductor products in the China market.
The product portfolio of Fujitsu Microelectronics (Shanghai) Co., Ltd. includes ASIC, MCU, ASSP/SOC, system memory, both as stand alone products and solutions for a wide range of applications. More information, please go to http://cn.fujitsu.com/fmc/en/


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