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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT69F360 데이터시트(PDF) 191 Page - Holtek Semiconductor Inc |
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HT69F360 데이터시트(HTML) 191 Page - Holtek Semiconductor Inc |
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191 / 235 page  Rev. 1.30 190 �ove��e� 1�� �01� Rev. 1.30 191 �ove��e� 1�� �01� HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM TM Interrupts TheCompact,StandardandPeriodicTypeTMseachhastwointerrupts.AlloftheTMinterrupts arecontainedwithintheMulti-functionInterrupts.ForeachoftheCompact,StandardandPeriodic TypeTMstherearetwointerruptrequestflagsxTMnPFandxTMnAFandtwoenablebitsxTMnPE andxTMnAE.ATMinterruptrequestwilltakeplacewhenanyoftheTMrequestflagsareset,a situationwhichoccurswhenaTMcomparatorPorcomparatorAmatchsituationhappens. Toallowtheprogramtobranchtoitsrespectiveinterruptvectoraddress,theglobalinterruptenable bit,EMI,andtherespectiveTMInterruptenablebit,andassociatedMulti-functioninterruptenable bit,MFnF,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullandaTMcomparator matchsituationoccurs,asubroutinecalltotherelevantTMInterruptvectorlocations,willtake place.WhentheTMinterruptisserviced,theEMIbitwillbeautomaticallyclearedtodisableother interrupts,howeveronlytherelatedMFnFflagwillbeautomaticallycleared.AstheTMinterrupt requestflagswillnotbeautomaticallycleared,theyhavetobeclearedbytheapplicationprogram. Serial Interface Module Interrupt TheSerialInterfaceModuleInterruptisalsoknownastheSIMinterrupt.ASIMInterruptrequest willtakeplacewhentheSIMInterruptrequestflag,SIMF,isset,whichoccurswhenabyteof datahasbeenreceivedortransmittedbytheSIMinterface.Toallowtheprogramtobranchtoits respectiveinterruptvectoraddress,theglobalinterruptenablebit,EMI,andtheSerialInterface Interruptenablebit,SIME,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullanda byteofdatahasbeentransmittedorreceivedbytheSIMinterface,asubroutinecalltotherespective SIMInterruptvector,willtakeplace.Whentheinterruptisserviced,theinterruptrequestflag,SIMF, willbeautomaticallyresetandtheEMIbitwillbeclearedtodisableotherinterrupts. UART Interrupt SeveralindividualUARTconditionscangenerateaUARTinterrupt.Whentheseconditionsexist, alowpulsewillbegeneratedtogettheattentionofthemicrocontroller.Theseconditionsarea transmitterdataregisterempty,transmitteridle,receiverdataavailable,receiveroverrun,address detectandanRXpinwake-up.Toallowtheprogramtobranchtotherespectiveinterruptvector addresses,theglobalinterruptenablebit,EMI,andUARTinterruptenablebit,UARTE,mustfirst beset.Whentheinterruptisenabled,thestackisnotfullandanyoftheseconditionsarecreated, asubroutinecalltotheUARTInterruptvectorwilltakeplace.Whentheinterruptisserviced,the UARTInterruptflag,UARTF,willbeautomaticallycleared.TheEMIbitwillalsobeautomatically clearedtodisableotherinterrupts.However,theUSRregisterflagswillbeclearedautomatically whencertainactionsaretakenbytheUART,thedetailsofwhicharegivenintheUARTsection. Interrupt Wake-up Function Eachoftheinterruptfunctionshasthecapabilityofwakingupthemicrocontrollerwheninthe SLEEPorIDLEMode.Awake-upisgeneratedwhenaninterruptrequestflagchangesfromlow tohighandisindependentofwhethertheinterruptisenabledornot.Therefore,eventhoughthese devicesareintheSLEEPorIDLEModeanditssystemoscillatorstopped,situationssuchas externaledgetransitionsontheexternalinterruptpins,alowpowersupplyvoltageorcomparator inputchangemaycausetheirrespectiveinterruptflagtobesethighandconsequentlygenerate aninterrupt.Caremustthereforebetakenifspuriouswake-upsituationsaretobeavoided.Ifan interruptwake-upfunctionistobedisabledthenthecorrespondinginterruptrequestflagshouldbe sethighbeforethedeviceenterstheSLEEPorIDLEMode.Theinterruptenablebitshavenoeffect ontheinterruptwake-upfunction. |
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