MB91401

Prelminary

2004.11.12

 

 

CARD IF (41 pin)

Pin name

Pin no.

Polarity

I/O

Circuit

Function/application

 

 

 

 

 

 

CFD15

2

 

 

 

 

CFD14

73

 

 

 

 

CFD13

72

 

 

 

 

CFD12

137

 

 

 

 

CFD11

136

 

 

 

 

CFD10

71

 

 

 

 

CFD9

192

 

 

 

CF data input/output pins

CFD8

135

 

 

I/O

B

I/O data/status/command signal pin to CompactFlash card

CFD7

70

 

 

 

side

CFD6

240

 

 

 

 

 

 

 

CFD5

191

 

 

 

 

CFD4

134

 

 

 

 

CFD3

69

 

 

 

 

CFD2

190

 

 

 

 

CFD0

133

 

 

 

 

CFD0

68

 

 

 

 

 

 

 

 

 

 

CFA10

189

 

 

 

 

CFA9

132

 

 

 

 

CFA8

67

 

 

 

 

CFA7

188

 

 

 

 

CFA6

131

 

 

CF address 10 to 0 output pins

CFA5

66

OUT

B

Address output CFA10 to CFA0 pins to CompactFlash card

CFA4

236

 

 

 

side

CFA3

187

 

 

 

 

CFA2

130

 

 

 

 

CFA1

65

 

 

 

 

CFA0

186

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF card enable output pin

 

 

Nega-

 

 

Byte access output pin to CompactFlash card side

CFCE2X

128

OUT

B

Note : Supported for access to CFD7 to CFD0.

tive

 

 

 

 

When “L” level is output, odd number byte access of the

 

 

 

 

 

 

 

 

 

 

word is shown.

 

 

 

 

 

 

 

 

 

 

 

CF card enable output pin

 

 

 

 

 

Byte access output pin to CompactFlash card side

 

 

 

 

 

Note : Supported for access to CFD7 to CFD0.

CFCE1X

63

Nega-

OUT

B

When “L” level is output at word access, even number byte

tive

access of the word is shown.

 

 

 

 

 

 

 

 

 

When the byte is accessed, the even number byte and odd

 

 

 

 

 

number byte access become possible because CFA0 and

 

 

 

 

 

CFCE2X are combined and used by it.

 

 

 

 

 

 

 

 

 

 

 

CF Attribute/Common switching output pin

 

 

Nega-

 

 

Attribute/Common switching output pin to CompactFlash

CFREGX

185

OUT

B

card side

tive

 

 

 

 

“H” : Common Memory select

 

 

 

 

 

 

 

 

 

 

“L” : Attribute Memory select

 

 

 

 

 

 

 

 

 

 

 

Card connection detect input pin : CFCD2X

CFCD2X

123

Nega-

IN

E

Checking connection pin of the socket and CompactFlash

tive

card. It is shown that the CompactFlash card was connected

 

 

 

 

 

 

 

 

 

when this signal and CFCD1X are both input by “0”.

 

 

 

 

 

 

 

 

 

 

 

(Continued)

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Image 14
Fujitsu MB91401 CFD15 CFD14 CFD13 CFD12, CFD11, CFD10 CFD9, CFD8, CFD7, CFD6, CFD5, CFD4, CFD3 CFD2, CFD0 CFA10, CFA9

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.