Fujitsu MB91401 manual

Page 15

 

Prelminary

 

 

 

 

MB91401

2004.11.12

 

 

 

 

 

 

 

 

 

 

 

 

 

(Continued)

 

 

 

 

 

 

 

Pin name

Pin no.

Polarity

I/O

Circuit

Function/application

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Card connection detect input pin : CFCD1X

 

 

CFCD1X

58

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 CFCD2X are both input by “0”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF side GND input pin

 

 

 

 

Nega-

 

 

GND level detection pin from CompactFlash side.

 

 

CFVS1X

230

IN

E

The “0” input to the pin assumes that the CompactFlash

 

 

tive

 

 

 

 

 

 

card can operate at 3.3 V, setting the CFVCC3EX pin to the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“L” level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF ready input pin : memory card

 

 

 

 

 

 

 

Ready input pin from CompactFlash memory card side

 

 

 

 

Posi-

 

 

“1” : Ready

 

 

CFRDY

60

tive

IN

E

“0” : Busy

 

 

(CFIREQ)

(Nega-

(CF interrupt : I/O card)

 

 

 

 

 

 

 

 

 

tive)

 

 

Interrupt request pin of CompactFlash I/O card. It is shown

 

 

 

 

 

 

 

the interrupt request was done from the I/O card when input

 

 

 

 

 

 

 

to this signal by “0”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cycle wait input pin during CF execution

 

 

 

 

 

 

 

Cycle wait input pin from CompactFlash card side

 

 

CFWAITX

125

Nega-

IN

E

“0” : It is shown that there is a wait demand at the cycle

 

 

tive

under execution.

 

 

 

 

 

 

 

 

 

 

 

 

 

“1” : It is shown that there is no wait demand at the cycle

 

 

 

 

 

 

 

under execution.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF3.3 V power enable output pin

 

 

 

 

 

 

 

Outputs “L” level when the CompactFlash card is operable

 

 

CFVCC3EX

234

Nega-

OUT

B

at 3.3 V.

 

 

tive

The output signal enables 3.3-volt power supply to the

 

 

 

 

 

 

 

 

 

 

 

 

 

CompactFlash card. The pin outputs “L” level only when the

 

 

 

 

 

 

 

CFVS1X pin detects “0”; otherwise, the pin outputs “H”.

 

 

 

 

 

 

 

 

 

 

 

 

Posi-

 

 

CF reset output pin

 

 

CFRESET

184

OUT

A

Reset output pin to CompactFlash card side.

 

 

tive

 

 

 

 

 

 

CompactFlash is reset at “H” output.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nega-

 

 

CF read strobe output pin

 

 

CFOEX

127

OUT

B

Read strove output pin to CompactFlash card (memory

 

 

tive

 

 

 

 

 

 

mode and Attribute memory area)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF register write output pin

 

 

 

 

Nega-

 

 

Write clock output pin to CompactFlash card (register write

 

 

CFWEX

62

OUT

B

and Card Configuration Register area).

 

 

tive

 

 

 

 

 

 

The register write is executed at the rising edge from “L” to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“H”.

 

 

 

 

 

 

 

 

 

 

CFIORDX

64

Nega-

OUT

B

CFIO read strobing output pin

 

 

tive

Read strove output pin to CompactFlash card (I/O mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFIOWRX

129

Nega-

OUT

B

CFIO write strobing output pin

 

 

tive

Write strove output pin to CompactFlash card (I/O mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

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Contents Features DescriptionPackage USB Function Controller Packet filtering functionGeneral Purpose IO Gpio Memory InterfaceI2C Interface Card Interface CompactFlashIndex E F G H J K L M N P R T U V W PIN AssignmentPIN Number Table GND PIN DescriptionFunction/application Pin name Pin noICS0 BreakiICS2 ICS1 OUTSOUT0 SIN1SIN0 SOUT1MB91401 Rxcrs RxclkRxer RxdvEXD14 ExcsxEXA EXD15UCLK48 UDPUDM UsbinsCFD8 CFD15 CFD14 CFD13 CFD12CFD11 CFD10 CFD9MB91401 Pllvss SDASCL PllvddCircuit Type Type Circuit RemarksUSB I/O Circuit Remarks Separation of power supply pattern Handling DevicesPreventing Latch-up About power supply pins Treatment of the unused pinsTreatment of Open pins Treatment of output pinsAttached cable Part number Remarks Connected Specification of MB91401 and ICEUV CC Signal line name Wiring regulationsEvaluation MCU terminal name Pin treatment RSTPin name Function OscebCircuit constants Description Holding request withdrawal demand function OFF Bit data busOperation at start-up Treatment of Unused Input PinsAbout Mode pins MDI2 to MDI0 About watch dog timerORB AndhAndb ORHDMA Interrupt handler to NMI request tool Trace modeStep execution of Reti instruction Operand breakAuthentication macro Block DiagramMemory Space General Purpose Registers Register Mode SettingsMode Pins Mode Register ModrBit1, bit0 WTH1, WTH0 Bus width setting bits Operation modeFunction Remarks Address Register Block MAPUART0 DRCL0 W UTIMC0 R/W TIMER0DRCL1 W UTIMC1 R/W TIMER1 SIDR0 R/WBsdc Ichrc R/WBSD0 Xxxxxxxx BSD1 XxxxxxxxAddress Register Block DMADA1 Xxxxxxxx DMASA0 XxxxxxxxDMADA0 Xxxxxxxx DMASA1 Xxxxxxxx010FFFFF H Bsrr BCRR/W CCRR/W ADRR/W1XXXXXXX DARR/W BC2RR/W Xxxxxxxx00XXXXXX SIM if Smistatusr SIM if Xxxxxxxx SmiintenableSMICMDR/W SmicmdstExiftxrw Exifrxdr RExiftxdr W ExifrxrrCONT1R/W XXXXX0XX-XXX00000 XXXXXXXX-XXXXXXXXFIFO1R FIFO2W XXXXXXXX-XXXXXXXX FIFO3W XXXXXXXX-XXXXXXXXXXXXXXXX-X0000000 XXXXXXXX-XXX00000 Interrupt Address of TBR Interrupt source Offset Interrupt VectorDefault NMI Non Maskable Interrupt Interrupt Address of TBR Interrupt source OffsetΣiol Electrical CharacteristicsParameter Symbol Rating Unit MinTyp Parameter Symbol Value UnitTCK/TRST/TMS TDI/TDO CfresetParameter Pin Conditions Value Unit Min TypPin Conditions Value Unit Input Levels High driven Vcrs standard range VDDE/2 UsbcMclko Reset Parameter Pin ConditionsUnit Remarks Min RDX Mclko ↑ Mclko ↑RDY Mclko ↑ Sclk ↑ SCK1, SCK0SOUT1, SOUT0 SIN1, SIN0Internal shift clock mode Txen Txclk ↑ Rxdv Rxclk ↑Rxer Rxclk ↑ Reception OUT → Mdio Mdclk ↑External if Parameter Symbol Pin Value Unit Remarks MinWrite access UDP, UDM USB interface Parameter Symbol PinFull-speed Buffer SDA Pclk 10 I2C interfacePclk SCL PclkCard if CFCE2X, CFCE1XCFOEX, Cfiordx CDWEX, Cfiowrx Parameter SymbolValue Unit Remarks Min Max CFWEX, CfiowrxPart number Package Remarks Ordering InformationPackage Dimension Memo Asia Pacific JapanNorth and South America Europe

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.
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