MB91401

 

 

 

 

 

 

Prelminary

 

 

 

 

 

2004.11.12

 

 

 

 

 

 

 

 

 

 

 

 

 

I2C IF (2 pin)

 

 

 

 

 

 

 

 

 

 

Pin name

Pin no.

Polarity

I/O

Circuit

 

 

Function/application

 

 

 

 

 

 

 

 

 

 

 

 

 

SDA

181

I/O

 

B

 

Serial data line input/output pin

 

 

 

 

I2C bus data I/O pin

 

 

 

 

 

 

 

 

 

 

 

SCL

59

I/O

 

B

 

Serial clock line input/output pin

 

 

 

 

I2C bus clock I/O pin

 

 

 

 

 

 

 

 

 

 

 

Power Supply/GND (39 pin)

 

 

 

 

 

 

 

 

 

Pin name

Pin no.

Polarity

I/O

 

Circuit

 

Function/application

 

 

 

 

 

 

 

 

 

 

 

 

 

PLLVDD

199

Power

 

V-E

 

APLL dedicated power supply pin

 

 

supply

 

 

This pin is for 1.8 V power supply pin.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLLVSS

197

GND

 

V-S

APLL dedicated GND Pin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

83

 

 

 

 

 

 

 

 

 

 

196

 

 

 

 

 

 

 

 

 

 

202

 

 

 

 

 

 

 

 

 

 

208

Power

 

 

 

 

 

 

 

VDDE

214

 

V-E

3.3 V power supply pin

 

 

supply

 

 

 

 

220

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

226

 

 

 

 

 

 

 

 

 

 

232

 

 

 

 

 

 

 

 

 

 

238

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

195

 

 

 

 

 

 

 

 

 

 

200

 

 

 

 

 

 

 

 

 

 

203

 

 

 

 

 

 

 

 

 

 

207

 

 

 

 

 

 

 

 

 

 

211

 

Power

 

 

 

 

 

 

 

VDDI

215

 

V-E

1.8 V power supply pin

 

 

219

supply

 

 

 

 

 

 

 

 

 

 

 

 

 

223

 

 

 

 

 

 

 

 

 

 

227

 

 

 

 

 

 

 

 

 

 

231

 

 

 

 

 

 

 

 

 

 

235

 

 

 

 

 

 

 

 

 

 

239

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

19

 

 

 

 

 

 

 

 

 

 

37

 

 

 

 

 

 

 

 

 

 

55

 

 

 

 

 

 

 

 

 

 

193

 

 

 

 

 

 

 

 

 

 

198

 

 

 

 

 

 

 

 

 

 

201

 

 

 

 

 

 

 

 

 

VSS

205

GND

 

V-S

 

GND Pin

 

 

209

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

213

 

 

 

 

 

 

 

 

 

 

217

 

 

 

 

 

 

 

 

 

 

221

 

 

 

 

 

 

 

 

 

 

225

 

 

 

 

 

 

 

 

 

 

229

 

 

 

 

 

 

 

 

 

 

233

 

 

 

 

 

 

 

 

 

 

237

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

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Image 16
Fujitsu MB91401 manual Sda, Scl, Pllvdd, Pllvss, Vdde, Vddi, Vss

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.