Tokyo, June 30, 2000 -- Fujitsu Limited today introduced three new products in the F2MC(R) (Fujitsu Flexible Microcontroller) series of system control microcomputers. New models MB90473 and the MB90474 are 16-bit microcontrollers with 1.8V low-power operation for digital AV devices. Model MB90F474, also a low-voltage (2.4V) 16-bit microcontroller, features built-in flash memory. All
three products go on sale beginning today.
In recent years, consumer products such as digital audio-
video devices and peripherals for personal computers have
rapidly acquired more sophisticated functions. This has created a need for faster speeds and lower power consumption in the microcomputers for the systems that
control these functions.
The industry's first 16-bit microcontrollers to run at 1.8V, which enables longer battery life and decreased power consumption, Fujitsu's new high-speed (5MHz) MB90473 and MB90474 models are ideally suited for controlling systems of such AV devices as home audio and silicon audio *1 and for personal computer peripherals such as CD-RW and DVD-ROM devices.
Both models have internal clock multiplier circuits *2, set one to four times the speed (in increments of integers) of the standard cycle oscillator. Thus, the internal operating cycles of the microcontroller can be set at a high value even if a low-price, low-cycle standard cycle oscillator is installed. In addition, the MB90474 has a high-capacity memory (256KB ROM, 16KB RAM).
The newly developed model MB90F474 is the world's first 2.4V low-voltage operation 256-kilobyte microcontroller equipped with internal flash memory. Because
microcontrollers with internal flash memory can easily handle program modifications and enable memory expansion, they can be used in a wide range of devices. Fujitsu
anticipates a steady increase in demand for this product.
Some microcontrollers with internal flash memory require two power sources for write/erase and read functions, however, since Fujitsu's microcontroller with internal flash memory has built-in booster circuits *3 in the flash memory, it operates on a single power source. This makes possible lower costs, smaller devices, and simpler power source designs.
Fujitsu has set a monthly sales target of 2 million units for three models combined. Since 1985, the company has been offering F2MC microcontrollers for consumer
devices. As it works to further enhance the F2MC line-up for digital AV devices and automobile information terminals, Fujitsu aims to continue its industry leadership in
developing lower voltage and higher performance microcontrollers.
Product Overview
Sample prices MB90473: 650 yen, MB90474: 850 yen, MB90F474: 1,800 yen
| Features | MB90473 | MB90474 | MB90F474 |
| Classification | Mask | Mask | Flash memory |
| RAM | 10-kbyte | 16-kbyte | 16-kbyte |
| Mask ROM | 128-kbyte | 256-kbyte | - |
| Flash memory | - | - | 256-kbyte |
| Operating
Voltage | 1.8V-3.6V | 1.8V-3.6V | 2.4V-3.6V |
| Operating
Frequency
(at 3V) | 20MHz | 20 MHz | 20 MHz |
Specifications
- CPU function: standard addressing mode: 23 types
High-precision calculation though the adoption of 32 bit accumulator
Multiplication/deduction with and expandable RETI order
Non multiplex bus (*4)/ Multiplex bus (*4)
- Power Management: CPU gap movement mode, sleep
mode, stop mode, time mode
- UART (*5): 1 ch (Clock synchronized communications,
non synchronized communications)
- I/O expandable serial I/F: 8 bit x 2 ch (LSB/MSB first
option possible) *6
- PWC timer *7 : 3 ch
- 8/16 bit up-down counter: 16 bit x 1 ch/ 8 bit x 2 ch
- I2C ( R) Interface: 1 ch
- 8/16 bit PPD timer *8 : 16 bit x 3 ch/ 8bit x 6 ch
- A/D converter: 10 bit dissolvable x 8ch
- DTP *9/ outside insert: 8 input
- Package: QFP (Quad Flat Package) - 100
LQFP (Low-profile Quad Flat Package) - 100
Glossary
- Silicon audio: audio playback devices that use
semiconductor memory as their storage media
- Clock multiplier circuit: A circuit which generates
cycles in integer increments internally and supplies
them as an internal clock in order to speed up the
operation of the internal circuits with respect to
external basic cycles
- Booster circuit: A circuit for generating a voltage
higher than standard voltage. In flash memory, a booster
circuit is used to increase power source voltage to the
higher voltage needed for writing.
- Non-multiplex path: A path formula in which the
address path and the data path diverge (are independent).
- UART: (universal asynchronous receiver transmitter)
start-stop synchronous serial communications
- LSB: (Least Significant Bit) Lowest-ranking bit.
MSB: (Most Significant Bit) Highest-ranking bit
- PWC timer: (Pulse Width counter) A timer that can
count pulse widths
- PPG timer: (Programmable Pulse Generator) A timer
that freely sets the cycles and amplitude of the output
pulses
- DTP: (Data Transfer Peripheral) A terminal which takes
the DMA (Direct Memory Access) demands or interrupt demands from
external peripherals and activates automatic transmission to the F2MC-16LX
CPU.
About Fujitsu
Fujitsu Limited (TSE: 6702) is a leading provider of Internet-based
information technology solutions for the global marketplace. Comprising
over 500 group companies and affiliates worldwide -- including ICL, Amdahl
and DMR Consulting -- it had consolidated revenues of 5.26 trillion yen
($49.6 billion) in the fiscal year ended March 31, 2000. Fujitsu's
pace-setting technologies, world-class computing and telecommunications
platforms, and global corps of over 60,000 systems and services experts make
it uniquely positioned to unleash the infinite possibilities of the Internet
to help its customers succeed. Altogether, the Fujitsu Group has 188,000
employees and operations in over 100 countries.
Internet: http://www.fujitsu.com
*F2MC is a registered trademark of Fujitsu Limited. All other
company/product names mentioned may be trademarks or registered trademarks
of their respective holders and are used for identification purpose only.