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ADVance informaTION
TMS470R1A64
16/32-bitriscflashmicrocontroller
SPNS099–NOVEMBER2004
•
零-pinphase-lockedloop(zpll)clockmodule
•
analogwatchdog(awd)计时器
•
real-timeinterrupt(rti)单元
•
twoserialperipheralinterface(spi)modules
•
twoserialcommunicationinterface(sci)modules
•
standardcancontroller(scc)
•
classiiserialinterface(c2sia)
•
10-bitmulti-bufferedanalog-至-digitalconverter(mibadc),8-inputchannels
•
高-endtimer(het)controlling13i/os
•
externalclockprescale(ecp)
•
upto39i/opinsand1input-onlypin
thefunctionsperformedbythe470+systemmodule(sys)包含:
•
Addressdecoding
•
Memoryprotection
•
Memoryandperipheralsbussupervision
•
Resetandabortexceptionmanagement
•
Prioritizationforallinternalinterruptsources
•
Deviceclockcontrol
•
parallelsignatureanalysis(psa)
thisdatasheetincludesdevice-specificinformationsuchasmemoryandperipheralselectassignment,中断
priority,andadevicememorymap.foramoredetailedfunctionaldescriptionofthesysmodule,seethe
TMS470R1xSystemModuleReferenceGuide
(literaturenumberspnu189).
thea64memoryincludesgeneral-purposesramsupportingsingle-cycleread/writeaccessesinbyte,half-文字,
andwordmodes.
theflashmemoryonthea64deviceisanonvolatile,electricallyerasableandprogrammablememory
implementedwitha32-位-widedatabusinterface.theflashoperateswithasystemclockfrequencyofupto24
mhz.inpipelinemode,theflashoperateswithasystemclockfrequencyofupto48mhz.formoredetailed
informationontheflash,seethef05flashsectionofthisdatasheetandthe
TMS470R1xF05FlashReference
手册
(literaturenumberspnu213).
thea64devicehassixcommunicationinterfaces:twospis,twoscis,anscc,andac2sia.thespiprovides
aconvenientmethodofserialinteractionforhigh-speedcommunicationsbetweensimilarshift-registertype
设备.thesciisafull-duplex,seriali/ointerfaceintendedforasynchronouscommunicationbetweenthe
cpuandotherperipheralsusingthestandardnon-返回-至-零(nrz)format.thesccusesaserial,
multimastercommunicationprotocolthatefficientlysupportsdistributedreal-timecontrolwithrobustcommuni-
cationratesofupto1megabitpersecond(mbps).thesccisidealforapplicationsoperatinginnoisyand
harshenvironments(e.g.,industrialfields)thatrequirereliableserialcommunicationormultiplexedwiring.这
C2SIaallowstheA64totransmitandreceivemessagesonaclassIInetworkfollowinganSAEJ1850
(2)
标准.
formoredetailedfunctionalinformationonthespi,sci,andsccperipherals,seethespecific
TMS470R1x
PeripheralReferenceGuides
(literaturenumbersspnu195,spnu196,andspnu197,各自).formore
detailedfunctionalinformationonthec2siaperipheral,seethe
tms470r1xclassiiserialinterfacea(c2sia)
ReferenceGuide
(literaturenumberspnu218).
thehetisanadvancedintelligenttimerthatprovidessophisticatedtimingfunctionsforreal-timeapplications.
thetimerissoftware-控制,usingareducedinstructionset,withaspecializedtimermicromachineandan
attachedi/oport.thehetcanbeusedforcompare,俘获,orgeneral-purposei/o.itisespeciallywellsuited
forapplicationsrequiringmultiplesensorinformationanddriveactuatorswithcomplexandaccuratetimepulses.
formoredetailedfunctionalinformationonthehet,seethe
tms470r1xhigh-endtimer(het)涉及
手册
(literaturenumberspnu199).
(2)saestandardj1850classbdatacommunicationnetworkinterface.
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