поискавой системы для электроныых деталей |
|
HT45R4U датащи(PDF) 27 Page - Holtek Semiconductor Inc |
|
HT45R4U датащи(HTML) 27 Page - Holtek Semiconductor Inc |
27 / 105 page Rev. 1.10 �6 �a��� 1�� �01� Rev. 1.10 �7 �a��� 1�� �01� HT45R4U TinyPowerTM A/D Type e-Banking ASSP OTP MCU with LCD Interrupt Control Registers These8-bitregisters,INTC0,INTC1,MFICandINTEDGE,controltheoperationofthedevice interruptfunctions.Bysettingvariousbitswithintheseregistersusingstandardbitmanipulation instructions,theenable/disablefunctionofeachinterruptcanbeindependentlycontrolled.Amaster interruptbitwithintheINTC0register,theEMIbit,actslikeaglobalenable/disableandisusedto setalloftheinterruptenablebitsonoroff.Thisbitisclearedwhenaninterruptroutineisenteredto disablefurtherinterruptandissetbyexecutingthe"RETI"instruction.TheINTEDGEregisterisused toselecttheactiveedgesforthetwoexternalinterruptpinsINT0andINT1. Timer/Event Counter Registers Thedevicecontainsthreeinternal8-bitTimer/EventCounters.TheregistersTMR0,TMR1andTMR2 arethelocationswherethetimervaluesarelocated.Theseregisterscanalsobepreloadedwithfixed datatoallowdifferenttimeintervalstobesetup.Theassociatedcontrolregisters,TMR0C,TMR1C andTMR2C,containthesetupinformationforthesetimers,whichdeterminesinwhatmodethetimer istobeusedaswellascontainingthetimeron/offcontrolfunction. Input/Output Ports and Control Registers WithintheareaofSpecialFunctionRegisters,theI/Oregistersandtheirassociatedcontrolregisters playaprominentrole.AllI/OportshaveadesignatedregistercorrespondinglylabeledasPA, PB,PC,PDandPE.TheselabeledI/OregistersaremappedtospecificaddresseswithintheData MemoryasshownintheDataMemorytable,whichareusedtotransfertheappropriateoutputor inputdataonthatport.WitheachI/OportthereisanassociatedcontrolregisterlabeledPAC,PBC, PCC,PDCandPECalsomappedtospecificaddresseswiththeDataMemory.Thecontrolregister specifieswhichpinsofthatportaresetasinputsandwhicharesetasoutputs.Tosetupapinasan input,thecorrespondingbitofthecontrolregistermustbesethigh,foranoutputitmustbesetlow. Duringprograminitialization,itisimportanttofirstsetupthecontrolregisterstospecifywhich pinsareoutputsandwhichareinputsbeforereadingdatafromorwritingdatatotheI/Oports.One flexiblefeatureoftheseregistersistheabilitytodirectlyprogramsinglebitsusingthe″SET[m].i″ and″CLR[m].i″instructions.TheabilitytochangeI/Opinsfromoutputtoinputandviceversaby manipulatingspecificbitsoftheI/Ocontrolregistersduringnormalprogramoperationisauseful featureofthisdevice. A/D Converter Registers – ADRL, ADRH, ADCR0, ADCR1, ACER Thedevicecontainsamultiplechannels12-bitA/Dconverter.ThecorrectoperationoftheA/ Drequirestheuseoftwodataregistersandthreecontrolregisters.Thetwodataregisters,ahigh bytedataregisterknownasADRH,andalowbytedataregisterknownasADRL,aretheregister locationswherethedigitalvalueisplacedafterthecompletionofananalogtodigitalconversion cycle.FunctionssuchastheA/Denable/disable,A/DchannelselectionandA/Dclockfrequencyare determinedusingthethreecontrolregisters,ADCR0,ADCR1andACER. Port A Wake-up Register − PAWU AllpinsonPortAhaveawake-upfunctionenablealowgoingedgeonthesepinstowake-up thedevicewhenitisinapowerdownmode.ThepinsonPortAthatareusedtohaveawake-up functionareselectedusingthisresister. |
Аналогичный номер детали - HT45R4U |
|
Аналогичное описание - HT45R4U |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |