New Products

MB90890 Series

 

 

pave the way towards packages that meet the higher standards of safety and reliability listed below.

An extended range of operating voltages between 3.5V and 5.5V, ensuring enhanced reliability for system operation without possible voltage drops

A 50% or greater increase in the margin for the circuit, from the typical 0.3VCC to less than 0.5VCC. This enables recognition of the 0 level of input voltages, opening up new possibilities for the realization of noise-resistant systems

Product Features

Configured with FUJITSU,s original high-performance F 2 MC-16LX CPU

Minimum instruction execution time of 62.5ns (at 16MHz internal operation frequency)

System clock speed that can be increased by integral multiples with the internal PLL clock (enables increased internal operating frequency by an integral multiple of 1 to 4 times the base oscillator frequency)

Instruction set supporting C language and multitasking

Four available power-saving modes

Sleep mode (CPU clock set OFF)

Time-base timer mode

(All timers but the time-base timer set OFF)

Stop mode (Base oscillator set OFF)

CPU intermittent operation mode

(CPU operating clock repeatedly toggles ON and OFF based on preset values)

Resources

I/O port: A maximum of 36 ports available (including four for higher-current outputs)

18-bit time-base counter/Watchdog timer/Clock timer :1 channel

8/16-bit PPG timer : 8-bit×4-channel, or 16-bit×2-channel

16-bit reload timer: 2 channels

16-bit I/O timer

16-bit free-running timer :1 channel

16-bit input capture (ICU) : 4 channels

UART:2 channels

DTP/external interruption circuit : 4 channels

Figure 1 Operation of Dual-Operation Flash Memory-Integrated Microcontroller Series MB90F897

Figure 2 Operational Flow of CPU Rewrite by Flash Memory

Dual-Operation Flash Memory

(Upper Bank)

 

SA94K-byte

 

SA84K-byte

Write/erase available in one bank

No need to transfer programs to RAMwhen flash memories rewrite.

SA74K-byte

 

while a program is executed in the

SA64K-byte

 

other bank

 

 

SA516K-byte

 

 

 

 

 

 

 

 

Dual-Operation Flash Memory

SA416K-byte

 

 

(Lower Bank)

 

 

 

 

 

 

 

 

 

 

 

 

SA34K-byte

 

 

Dual-Operation

 

SA24K-byte

 

 

 

SA14K-byte

 

 

 

 

 

 

 

 

 

 

 

 

SA04K-byte

 

Read (Execution)

 

Write/Erase

 

 

 

 

 

 

 

OR

 

 

Write/Erase

 

Read (Execution)

 

Existing Flash Memory

 

①�

Flash

 

Memory

②�

 

CPU

RAM

Rewriting from flash memoryto RAM Program transmission

Dual-Operation Flash Memory

Upper Bank

①�

 

Lower Bank

①�

 

Flash Memory

CPU

 

Rewriting to flash memory

CPU

Rewriting to flash memory

12

FIND Vol.21

No.1 2003

Page 2
Image 2
Fujitsu MB90890 manual Product Features, Resources, Cpu, Ram

MB90890 specifications

The Fujitsu MB90890 is a high-performance microcontroller that stands out in the realm of embedded systems, particularly for automotive and industrial applications. Engineered with a focus on innovation, the MB90890 series showcases an array of characteristics that make it an ideal choice for various complex tasks.

One of the principal features of the MB90890 microcontroller is its advanced processing capability. It incorporates a 32-bit FR (Fujitsu RISC) core, which is optimized for high-speed processing and efficiency. With a clock frequency reaching up to 80 MHz, it delivers exceptional performance for real-time applications, allowing embedded systems to execute tasks with minimal latency.

The MB90890 also boasts a rich set of peripherals designed to enhance its functionality. It offers multiple communication interfaces, including CAN (Controller Area Network), UART (Universal Asynchronous Receiver-Transmitter), and I2C (Inter-Integrated Circuit). These interfaces facilitate seamless communication with other components in an automotive or industrial system, promoting interoperability and flexibility.

In terms of memory, the microcontroller comes with various configuration options, including Flash and RAM. This flexibility allows developers to choose the right memory size according to the specific needs of their application. The integrated Flash memory allows for reprogramming, enabling software updates or modifications without the need for hardware changes.

Power efficiency is another standout characteristic of the MB90890. Its low-power design enables devices to operate for extended periods without the need for frequent recharging or battery replacement. This is especially critical in automotive applications, where power consumption considerations can significantly impact overall system performance and longevity.

Safety features are paramount in automotive applications, and the MB90890 addresses this need through its compliance with established safety standards. The architecture is designed to support error detection and fault isolation, essential for critical functions in safety-critical systems.

Moreover, the MB90890 microcontroller supports various development tools and software environments, streamlining the design and development process. With support for development kits, software libraries, and a comprehensive ecosystem, engineers find it easier to bring their projects to life.

In summary, the Fujitsu MB90890 microcontroller combines high performance, advanced features, and safety compliance, making it an excellent choice for modern embedded applications. Its robust architecture and flexible design cater to the needs of diverse industries, ensuring that it remains a reliable solution in a competitive marketplace.