Prelminary

MB91401

2004.11.12

CONNECTED SPECIFICATION OF MB91401 AND ICE

Recommended type and circuit configuration of the emulator interface connector mounting on the user system, attention when designing and wiring regulation are shown.

When the flat cable is used, the combination of the connectors with housing should be selected.

Recommended connector type

Attached cable

Part number

Remarks

 

 

 

FPC cable

FH10A-30S-1SH (Maker : Hirose Electric Co., Ltd.)

With latch

 

 

 

Circuit composition

Please put the dumping resistance 15 Ω in the series in the ICLK terminal signal because of the stability of operation when connecting it with ICE. Resistance must be mounted near the terminal ICLK of this LSI when you design the printed wiring board.

Emulator interface connector

 

 

 

MCU for evaluation

MB2198-0 and MB2197-01 side

 

 

VCC

MB91401

UVCC

 

FUSE

1

 

VCC

 

 

 

 

 

 

 

 

 

15 Ω 3

ICLK

ICLK

 

 

 

 

ICS2 to ICS0

 

 

 

 

ICS2 to ICS0

ICD3 to ICD0

 

 

 

 

ICD3 to ICD0

BREAKI

 

 

 

 

BREAKI

RST

 

 

2

10 kΩ

INITXI

 

 

 

 

 

 

 

 

 

xRSTIN

 

 

 

 

 

FR

(Open)

Reset output

 

 

 

 

circuit

 

 

GND

 

 

 

 

 

 

VSS

 

 

 

 

*1 : Use the line (inter connect) to flow the rating current or more.

*2 : The change circuit might become necessary, and refer to “Precaution when designing”.

*3 : Mount resistance near the terminal ICLK of MB91401.

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Fujitsu manual Connected Specification of MB91401 and ICE, Attached cable Part number Remarks

MB91401 specifications

The Fujitsu MB91401 microcontroller is a versatile device designed for automotive applications, embedded systems, and industrial control. It belongs to the MB91400 series, known for its robustness and efficiency. This series integrates advanced features and technologies that cater to a wide variety of real-time applications.

One of the standout features of the MB91401 is its 32-bit RISC architecture, which operates at clock speeds up to 40 MHz. This high-performance core enables rapid processing and data handling, making it suitable for demanding applications. The microcontroller is equipped with a generous amount of Flash memory, allowing developers to store essential firmware and applications directly on the chip, enhancing reliability and reducing design complexity.

Another key characteristic is its extensive memory configuration, which includes SRAM for data storage and EEPROM for non-volatile data retention. This combination provides flexibility for developers, enabling them to tailor the memory allocation based on specific application requirements.

The MB91401 is designed with a focus on peripheral integration. It features multiple I/O ports, timer units, and A/D converters, making it an ideal choice for applications that require precise timing and analog signal processing. The analog-to-digital converters offer high resolution and fast conversion speeds, which are critical in automotive and industrial control systems where accuracy is paramount.

Safety is a critical consideration in automotive applications, and the MB91401 addresses this with built-in diagnostic features and error detection capabilities. These features help ensure that the application remains functional and safe under various operating conditions.

In terms of connectivity, the microcontroller supports various communication protocols, including CAN, UART, and SPI, facilitating seamless integration with other systems and devices. This is particularly important in automotive applications where communication between different electronic control units (ECUs) is essential for overall system functionality.

The Fujitsu MB91401 is also designed for low power consumption, making it suitable for battery-operated devices and energy-sensitive applications. Its various power-saving modes allow developers to optimize the system's performance while extending operational life.

In summary, the Fujitsu MB91401 is a powerful and flexible microcontroller that combines high-performance processing with extensive peripheral support and safety features. Its robust architecture and energy-efficient design make it an excellent choice for a wide range of automotive and industrial applications, promoting both reliability and innovation in embedded system development.