雙語教學(xué)雙語教學(xué)1.doc

雙語教學(xué)雙語教學(xué)1.doc

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1、Ch1???Hardware?System??of??Single?Chip?MicrocomputerlKeywords:微型計(jì)算機(jī)(Microcomputer)PC(PersonalComputer)機(jī)單片微型計(jì)算機(jī)(SingleChipMicrocomputer)中央處理單元(CPU,CentralProcessingUnit)輸入輸出(I/O,Input/Output)隨機(jī)存取存儲器(RAM,RandomAccessMemory)只讀存儲器ROM(Read-onlyMemory)專用寄存器(Sp

2、ecialFunctionRegister)程序計(jì)數(shù)器(PC,ProgramCounter)累加器(ACC,Accumulator)程序狀態(tài)字(PSW,ProgramStatusWord)堆棧指針(SP,StackPointer)時(shí)鐘電路(Clock?circuit)復(fù)位電路(Reset?circuit)電壓(Voltage)地線(Ground)lIntroduction:Thegeneric8031architecturesportsaHarvardarchitecture,whichcontains

3、twoseparatebusesforbothprogramanddata.So,ithastwodistinctivememoryspacesof64KX8sizeforbothprogramanddata.Itisbasedonan8bitcentralprocessingunitwithan8bitAccumulatorandanother8bitBregisterasmainprocessingblocks.Otherportionsofthearchitectureincludefew8bit

4、and16bitregistersand8bitmemorylocations.Each8031devicehassomeamountofdataRAMbuiltinthedeviceforinternalprocessing.Thisareaisusedforstackoperationsandtemporarystorageofdata.ThisbasearchitectureissupportedwithonchipperipheralfunctionslikeI/Oports,timers/co

5、unters,versatileserialcommunicationport.Soitisclearthatthis8031architecturewasdesignedtocatermanyrealtimeembeddedneeds.??????????????????????????????????????????????????????????????????????????????????????????????Thefollowinglistgivesthefeaturesofthe8031

6、architecture:#Optimized8bitCPUforcontrolapplications.#ExtensiveBooleanprocessingcapabilities.#64KProgramMemoryaddressspace.#64KDataMemoryaddressspace.#128bytesofonchipDataMemory.#32Bi-directionalandindividuallyaddressableI/Olines.#Two16bittimer/counters.

7、??????????????????????????????????????????????????????????????????????????????????????????#FullDuplexUART.???????????????????????????????????????????????????????????????????????????????????????????????????#6-source/5-vectorinterruptstructurewithpriorityl

8、evels.#Onchipclockoscillator.????????????????????????????????????????????????????????????????????????????????????????????????Nowyoumaybewonderingaboutthenonmentioningofmemoryspacemeantfortheprogramstorage,themostimportantp

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