Fujitsu Expands 32-bit Microcontroller Family Designed for High-Performance Home Appliances

    New MB91F487 Provides Inverter Control for Two Motors

    SAN JOSE, Calif., March 27 /CNW/ -- Fujitsu Microelectronics America,
Inc. (FMA) today introduced the newest addition to its MB91480 series of
32-bit microcontrollers (MCUs) for high-performance control of home appliances
like refrigerators, washers and dryers.
    The 80MHz, 32-bit MB91F487 provides two multi-function timer units for
motor inverter control on a single IC, saving space and increasing
functionality. It is the newest member of the FR family of 32-bit MCUs, which
meets the requirements of new generations of appliances by collecting and
using information from multiple sensors.
    "The MB91480 series of FR MCUs is ideal for appliances that use motor
control, like washing machines. High-speed A/D converters and dedicated motor-
control wave-form generator functions meet the demand for quieter and smoother
operation of the motors in these products," said Akio Nezu, senior manager of
the Embedded Solutions Business Group, Fujitsu Microelectronics America.
"These controllers, including the new MB91F487, also meet the requirements of
microwave ovens, which have several temperature monitors and steam-cooking
capabilities, as well as of air-conditioners, which are being designed with
air-purification and humidifier functions."
    The new MCU incorporates three A/D converters with a total of 18
channels, which allow for sensing minute changes in up to 18 sensors. Together
with the pulse-width-modulation controller, the converters enable smooth and
detailed control. Also, for inverter control computation, special product-sum
operation circuits divide high-speed processing with the CPU and reduce the
burden on the CPU.

    Pricing and Availability
    The MB91F487, which includes 512Kbytes of Flash ROM and 32Kbytes RAM,
operates at voltages from 4V to 5.5V. The MCU comes in 100-pin LQFP packages,
and samples are available now at $13.00 each. Volume pricing starts at $9.20
each in 10,000-unit quantities.

    About Fujitsu Microelectronics America, Inc.
    Fujitsu Microelectronics America, Inc. (FMA) leads the industry in
innovation. FMA provides high-quality, reliable semiconductor products and
services for the networking, communications, automotive, security and other
markets throughout North and South America. For more information about GDCs,
MCUs, and FlexRay products please see or address
e-mail to

    All product names mentioned herein are trademarks or registered
trademarks of their respective owners.

    MB91F487 Main Product Specifications

    Product Name                          MB91F487

    Minimum Instruction                            12.5 ns (80MHz)
     Execution Time

    Memory                  ROM                    512 Kilobyte
                                                   (Flash memory)
                            RAM                    32 Kilobyte

    Communication Functions I2C function UART      3 channel (ch)

    Analog Functions        8/10-bit               4ch X 2 units
                            A/D                    10ch X 1 units

    Timer Functions         Multi-function timer   2 units
                            16-bit reload timer    2ch
                            8/16-bit PPG timer     8 bit X 16ch(16 bit X 8ch)
                            16/32-bit base timer   16 bit X 4ch
                                                   (32 bit 2ch)
                            Watchdog timer         1ch

    External Interrupt                             Maximum 11

    DMAC                                           5ch

    Product-sum Operation                          1 Unit
     Circuits                                      (32 bit X 32 bit + 72 bit
                                                   = 72bit operation
                                                   For operation results,
                                                   possible to extract
                                                   rounding to 32-bit)

    I/O Ports                                      Maximum 77

    Supply Voltage                                 4.0~5.5 V

    Operating Temperatures                         -40~+85 degrees Celsius

    Package                                        LQFP((*)3) -100 pin (0.5mm
                                                   pitch, 14mm x 14mm)


For further information:

For further information: Emi Igarashi of Fujitsu Microelectronics
America,  Inc., +1-408-737-5647,; or Dick Davies of
IPRA,  +1-415-652-7515,, for Fujitsu Web Site:

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