Fujitsu MB90890 Series Manuel utilisateur

New Products

MB90890 Series

FIND Vol.21

No.12003

Product Description

The new series provides the world first high-performance

16-bit CPU integrating dual-operation flash memories,

together with a CAN controller, all within a LQFP-48

compact package.

CAN, Controller Area Network, is now the prevailing

global standard for LAN systems installed in automobiles.

The trend began in Europe, the first region in the world to

adopt the CAN controller-mounted microcontrollers, and

now FUJITSU is taking the lead in the industry by offering

diversified lineups of CAN microcontrollers as solutions for

the control of safety and amenity functions in automobiles.

The Company has just succeeded in offering the world first

microcontrollers mounted with flash memories that allow

simultaneous execution of read/write operations. With this

innovation, the flash memories applied conventionally for

readout purposes to change programs can now be used to

store various types of data during power interruptions.

This innovation offers several other advantages, as well. By

eliminating the need for EEPROM and related component

parts externally installed in the conventional designs, it

substantially reduces cost. It also facilitates the new application

of advanced controls for amenity, safety and communication,

including learning and tracing of maintenance data with the

use of large-density nonvolatile data memories.

The new series also offers an improved operating margin to

F2MC-16LX Family

16-bit Microcontroller

Mounted with Dual-Operation

Flash Memories

MB90890 Series

A new F2MC-16LX CPU-driven microcontroller series is available with 64 K-byte

dual-operation flash memories and a CAN controller integrated in a compact

48-pin package. This is the world first lineup of microcontrollers mounted with

dual-operation flash memories.

Photo 1 External View

New Products

MB90890 Series

12 FIND Vol.21 No.1 2003

pave the way towards packages that meet the higher

standards of safety and reliability listed below.

●An extended range of operating voltages between 3.5V and

5.5V, ensuring enhanced reliability for system operation

without possible voltage drops

●A 50% or greater increase in the margin for the circuit,

from the typical 0.3VCC to less than 0.5VCC. This enables

recognition of the 0 level of input voltages, opening up new

possibilities for the realization of noise-resistant systems

Product Features

■ Configured with FUJITSU,s original high-performance

F2MC-16LX CPU

■ Minimum instruction execution time of 62.5ns (at 16MHz

internal operation frequency)

■ System clock speed that can be increased by integral

multiples with the internal PLL clock (enables increased

internal operating frequency by an integral multiple of 1

to 4 times the base oscillator frequency)

■ Instruction set supporting C language and multitasking

■ Four available power-saving modes

●Sleep mode (CPU clock set OFF)

●Time-base timer mode

(All timers but the time-base timer set OFF)

●Stop mode (Base oscillator set OFF)

●CPU intermittent operation mode

(CPU operating clock repeatedly toggles ON and OFF based

on preset values)

■ Resources

●I/O port: A maximum of 36 ports available (including four

for higher-current outputs)

●18-bit time-base counter/Watchdog timer/Clock timer:1

channel

●8/16-bit PPG timer : 8-bit×4-channel, or 16-bit×2-channel

●16-bit reload timer: 2 channels

●16-bit I/O timer

16-bit free-running timer :1 channel

16-bit input capture (ICU) :4 channels

●UART:2 channels

●DTP/external interruption circuit : 4 channels

Dual-OperationFlashMemory

(UpperBank)

Dual-OperationFlashMemory

(LowerBank)

SA9：4K-byte

Write/eraseavailableinonebank

whileaprogramisexecutedinthe

otherbank

SA8：4K-byte

SA3：4K-byte

Dual-Operation

Read(Execution)

Write/Erase

Read(Execution)

CPU

SA2：4K-byte

SA1：4K-byte

SA0：4K-byte

SA7：4K-byte

SA6：4K-byte

SA5：16K-byte

SA4：16K-byte

Figure 1

Operation of Dual-Operation Flash Memory-Integrated Microcontroller Series MB90F897

Flash

Memory

RAM

CPU

①

①Rewritingfromflashmemory

toRAMProgramtransmission

ExistingFlashMemory

NoneedtotransferprogramstoRAM

whenflashmemoriesrewrite.

Dual-OperationFlashMemory

②Rewritingtoflashmemory

②

UpperBank

LowerBank

FlashMemory CPU

①

①Rewritingtoflashmemory

①

Figure 2 Operational Flow of CPU Rewrite by Flash Memory

New Products

MB90890 Series

FIND Vol.21

No.12003

●Delayed interruption generating module

●8/10-bit A/D converter: 8 channels

●Address match detection function

●Input level changeable by software

■ Package: FPT-48P-M26

Features of Dual-Operation

Flash Memory-Integrated

Microcontrollers

Fig. 1 outlines the operation of MB90F897 series

microcontrollers mounted with dual-operation flash

memories. While the upper bank flash memory handles

the execution of programs, the lower bank flash memory

can be applied for write/erase operations (or vice versa).

The new series also offers the following advantages for

system control.

■ No need to download programs to RAM when flash

memories self-rewrite to the CPU

Fig. 2 shows the operational flow for rewriting from flash

memories to the CPU.

In conventional microcontrollers mounted with flash

memories, programs have to be downloaded to RAM in

order to initiate rewrites, as these devices disallow rewrite

operations while programs are executed in the flash

memories. FUJITSU,s new microcontrollers integrated

with dual-operation flash memory allow rewrites by

executing programs on flash memory, thereby eliminating

the need to transfer the programs to RAM. This obviates the

need to make provisions against power failures during

program execution on RAM, and cuts down the program

download time as well.

■ Flash memory rewrites performed concurrently with

system control

Fig. 3 illustrates the control sequence for rewriting the

flash memory using interruption.

Conventionally, FUJITSU,s flash memory-integrated

microcontrollers have not been designed to allow

interruptions while the RAM is executing a program. After

the write/erase commands are issued, the software has to

check the flag to identify whether or not the write/erase

operation is completed. With the dual-operation flash

Enhancedsystemperformance Anyotherbankcanbereadout,evenwhiletheflashmemoryisbeingrewritten

Existingflashmemory

CPU

Previous

processing

Erase

Waitingtime

Nextprocessing

RAM

FlashMemory

CPU

Previous

processing

Nextprocessing

Erase

UpperBank

LowerBank

Dual-OperationFlashMemory

Eraseinstruction

READ

instruction

READ

instruction

READ

instruction

READ

instruction

HigherSpeed

Figure 3 Control of Flash Memory Rewrite Based on Interruption

New Products

MB90890 Series

14 FIND Vol.21 No.1 2003

memory-integrated microcontrollers, the interruption can

take place in response to any interruption factor generated

after the write/erase is completed, thus enabling the

processing of other programs after the write/erase command is

issued. Write/erase operations for flash memories are smoothly

and reliably executed while system control is in progress.

Fig. 4 provides the specifications for bank-to-bank

transmission of the interruption vector.

The interruption vector is transmitted to the upper bank

flash memory to rewrite the flash memory in the lower

bank, and vice versa. Thus, interruption-based control is

available for rewriting in either bank.

■ The software sector-protect function prevents erroneous

writing /erasing of flash memory

In the new series, settable sector-protect bits are assigned

to protect individual sectors. An

0

setting in the bit sets

the sector-protect function active, thereby protecting the

target sector against attempts to perform write/erase

operations. Once

0

is set, the

1

setting (to enable the

write/erase) is disabled until any reset factor can be

generated. This ensures that the flash memories are fully

protected against write/erase attempts even in the case of

program runaway.

■ Dual-operation flash memory-integrated microcontroller

substitutes for an external EEPROM

Using the dual-operation flash memory-integrated

microcontroller as a substitution for EEPROM offers the

following benefits.

●Reduced system board mounting area

The mounting area equivalent to an EEPROM footprint

is reduced.

●Available EEPROM-like sector configuration

Eight small-density (4K-byte) sectors are available,

providing an easy-to-handle sector configuration for the

data-rewrite area (Fig. 4).

●Faster write speed

The targeted write time is 32μs/byte (typical), markedly

faster than that with EEPROM.

Availabletransmissionofinterruptionvectordomain

UpperBank

Interruptionvectordomain

AllowablealternativeuseforEEPROM

Rewriting

domain

LowerBank

SA9：4K-byte

SA8：4K-byte

SA3：4K-byte

SA2：4K-byte

SA1：4K-byte

SA0：4K-byte

SA7：4K-byte

SA6：4K-byte

SA5：16K-byte

SA4：16K-byte

SENbit＝0 Compatiblewithprogramupdates

Rewriting

domain

SA9：4K-byte

SA8：4K-byte

SA3：4K-byte

SA2：4K-byte

SA1：4K-byte

SA0：4K-byte

SA7：4K-byte

SA6：4K-byte

SA5：16K-byte

SA4：16K-byte

SENbit＝1

Interruptionvectordomain

Figure 4 Specifications for Bank-to-Bank Transmission of Interruption Vector

New Products

MB90890 Series

FIND Vol.21

No.12003

●Improved data reliability

Data can be written in the chip without external communication,

eliminating concerns about data garble due to fluctuations in

communications lines caused by external noise.

Table 1 provides a list of available packages in this series,

Fig. 5 is a block diagram, and Fig. 6 shows pin assignments.

Development Environment

The new series is supported by SOFTUNETM V3, a FUJITSU

integrated software development environment. The

SOFTUNE V3 application software is designed to simplify

programming tasks to meet the diversified needs of

program designers. The hardware is compatible with

MB2140 Series, an emulator for the F2MC Family that

permits real-time debugging.

Table 2 lists available development tools.

Typical Applications

The new series is a lineup of 16-bit commodity-grade

microcontrollers tailor-engineered for applications that

require high-speed real-time processing, data rewriting,

or data storage to nonvolatile memory while executing

programs on flash memories. Each device is incorporated

in a compact 48-pin package suitable for system board

installation within a limited mounting space. ✱

NOTES

OFTUNE

is a trademark of FUJITSU LIMITED.

CPU

F2MC−16LXcore

16-bitfree-runningtimer

Clockcontrolcircuit

Dual-OperationFlashMemory

Clocktimer

Time-basetimer

RAM

X0，X1

RSTX

X0A，X1A

SOT1

SCK1

SIN1

AVCC

AVSS

AN0toAN7

AVR

ADTG

Internaldatabus

Pre-scaler

UART1

Pre-scaler

8/10-bitA/Dconverter

(8-channel)

UART0

Inputcapture(4-channel) IN0toIN3

INT4toINT7

TIN0，TIN1

TOT0，TOT1

PPG0toPPG3

16-bitPPGtimer(2-channel)

16-bitreloadtimer(2-channel)

DTP/Externalinterruption

CAN

Figure 5 Block Diagram

New Products

16 FIND Vol.21 No.1 2003

MB90V495G MB90F897/S

EvaluationType

Item

Model

Flashmemorytype

NotinstalledROMdensity 64K-byte

6K-byteRAMdensity

CPUfunctions

Numberofinstructions：351

Maximuminstructionexecutiontime：62.5nsatanoperatingfrequencyof4MHz(4timesthebaseoscillatorfrequency)

Availableaddressingtypes：23

Allowableprogrampatching：2addresspointers

Maximumstoragespace：16M-byte

Power-saving(Standbymode) Sleepmode/Clockmode/Time-basetimermode/Stopmode/CPUintermittentmode

I/Oport General-purposeI/Oport(CMOSoutput)：34(36

＊

)Fourofthemintendedforhigher-currentoutputports

Time-basetimer 8-bitfree-runningcounter

Interruptioninterval：1.024ms,4.096ms,16.834ms,131.072ms(atanoscillationclockfrequencyof4MHz)

16-bitreloadtimer

Numberofchannels：2

Countclockinterval：0.25μs，0.5μs，2.0μs(Machineclockfrequency16MHz)

Availableexternaleventcounting

Clocktimer 15-bitfree-runningcounter

Interruptioninterval：31.25ms，62.5ms，12ms，250ms，500ms，1.0ms，2.0ms(at8.192kHzsubclock)

DTP/Externalinterruption

Numberofchannels：4

Riseedge/Falledgeactivatedinresponsetotheinputof"H"and"L"levels

AvailableexternalinterruptionorextendedintelligentI/Oservice(EI2OS)

10-bitA/Dconverter

Numberofchannels：8

Resolution：Either10-bitor8-bit

Conversiontime：6.125μs (atamachineclockfrequencyof16MHz,includingthesamplingtime)

UART（SCI）

Numberofchannels：2

Withfullduplexdoublebuffers

Transmissionavailableineitherstate,synchronousorasynchronoustoclock

AlsocanbeusedasserialI/O

Dedicatedbaudrategeneratorincorporated

8/16-bitPPGtimer

Numberofchannels：2-channel(Availableinthe8-bit×4-channelconfiguration)

PPGoperationavailableinboththe8-bit×4-channeland16-bit×2-channelconfigurations

Allowableoutputofpulsewaveformatanydesiredperiodanddutyfactor

Countclock：62.5nsto1μs (atamachineclockfrequencyof16MHz)

Watchdogtimer Resetoccurringinterval：3.58ms,14.33ms,57.23ms,458.75ms(atanoscillationclockfrequencyof4MHz)

16-bitI/Otimer 16-bitfree-runningtimer：1channel

Inputcapture：4channels

Delayedinterruptiongenerating

module Interruptiongeneratingmodulefortaskchanging

Usedwiththereal-timeOS

2K-byte

CMOSProcess

PGA256Package LQFP-48

4.5Vto5.5VOperatingvoltage 3.5Vto5.5V

＊34forMB90897：36forMB90F897

Table 1 Product Lineup

MB90890 Series

New Products

MB90890 Series

FIND Vol.21

No.12003

TOPVIEW

P17/PPG336

P16/PPG235

P15/PPG134

P14/PPG033

P13/IN332

P12/IN231

P11/IN130

P10/IN029

X128

X027

CP37/ADTG 26

VSS

＊MB90F897：X0A，X1A

MB90F897S：P35，P36

AVCC

AVR

P50/AN0

P51/AN1

P52/AN2

P53/AN3

P54/AN4

P55/AN5

P56/AN6

P57/AN7

P20/TIN0 25

AVSS

X1A/P36＊

X0A/P35＊

P33

P32/SIN0

P31/SCK0

P30/SOT0

P44/RX

P43/TX

P42/SOT1

P41/SCK1

P40/SIN1

P21/TOT0

P22/TIN1

P23/TOT1

P24/INT4

P25/INT5

P26/INT6

P27/INT7

MD2

MD1

MD0

RST

VCC

Figure 6 Pin Assignments

Hardware

Mainunit

MB2141A

Software

SOFTUNEV3Workbench

SOFTUNEV3CCompiler

SOFTUNEV3Assembler

SOFTUNEV3CAnalyzer

SOFTUNEV3CChecker

Emulationpod

MB2145-507

Probecable

MB2132-466

Table 2 Development Tools

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