MB91401

Prelminary

2004.11.12

 

 

I/O MAP

This shows the location of the various peripheral resource registers in the memory space.

[How to read the table]

Address

 

Register

 

 

 

Block

 

 

 

 

 

 

+ 0

+ 1

 

+ 2

 

+ 3

 

 

 

 

 

 

 

 

 

 

 

 

0000_0000H

 

 

 

 

 

 

 

 

 

Reserved

0000_003CH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0040H

EIRR [R/W]

ENIR [R/W]

 

 

ELVR [R/W]

Ext Int

00000000

00000000

 

00000000 00000000

 

 

 

 

 

 

 

 

 

 

 

Read/Write attribute Initial value after a reset

Register name (First-column register at address 4n; second-column register at address 4n + 2)

Left most register address (When accessing it by word, the register of column 1 is positioned on the MSB side of data.)

Note : Initial values of register bits are represented as follows :

“1”

: Initial Value

“1”

 

 

 

 

 

 

“0”

: Initial Value

“0”

 

 

 

 

 

 

“X”

: Initial Value

“X”

 

 

 

 

 

 

“-”

: Access prohibited in reserved area.

 

 

 

Address

 

 

 

Register

 

 

Block

 

 

 

 

 

 

 

 

+ 0

 

+ 1

 

+ 2

+ 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0000H

 

 

 

 

 

 

 

to

 

 

 

 

 

Reserved

0000_003CH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0040H

EIRR [R/W]

 

ENIR [R/W]

 

ELVR

[R/W]

Ext Int

00000000

 

00000000

 

00000000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0044H

DICR [R/W]

 

HRCL [R/W]

 

DLYI/I-unit

 

-------0

 

0-11111

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0048H

 

TMRLR0 [W]

 

TMR0

[R]

 

 

XXXXXXXX XXXXXXXX

 

XXXXXXXX XXXXXXXX

 

 

 

 

 

Reload Timer 0

 

 

 

 

 

 

 

 

 

0000_004CH

 

 

 

TMCSR0 [R/W]

 

 

 

 

 

 

 

----0000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0050H

 

TMRLR1 [W]

 

TMR1 [R]

 

 

XXXXXXXX XXXXXXXX

 

XXXXXXXX XXXXXXXX

 

 

 

 

 

Reload Timer 1

 

 

 

 

 

 

 

 

 

0000_0054H

 

 

 

TMCSR1 [R/W]

 

 

 

 

 

 

 

----0000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000_0058H

 

TMRLR2 [W]

 

TMR2 [R]

 

 

XXXXXXXX XXXXXXXX

 

XXXXXXXX XXXXXXXX

 

 

 

 

 

Reload Timer 2

 

 

 

 

 

 

 

 

 

0000_005CH

 

 

 

TMCSR2 [R/W]

 

 

 

 

 

 

 

----0000

00000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Continued)

34

Page 34
Image 34
Fujitsu MB91401 manual Map, Address Register Block

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.