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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HT45R4U Fiches technique(PDF) 42 Page - Holtek Semiconductor Inc |
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HT45R4U Fiches technique(HTML) 42 Page - Holtek Semiconductor Inc |
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42 / 105 page  Rev. 1.10 4� �a��� 1�� �01� Rev. 1.10 43 �a��� 1�� �01� HT45R4U TinyPowerTM A/D Type e-Banking ASSP OTP MCU with LCD Bit3 TnEG:EventCounteractiveedgeselect 0:countonrisingedge 1:countonfallingedge PulseWidthMeasurementactiveedgeselect 0:startcountingonfallingedge,stoponrisingedge 1:startcountingonrisingedge,stoponfallingedge Bit2~0 TnPSC[2:0]:Timerprescalerrateselect 000:1:1 001:1:2 010:1:4 011:1:8 100:1:16 101:1:32 110:1:64 111:1:128 Configuring the Timer Mode Inthismode,theTimer/EventCountercanbeutilisedtomeasurefixedtimeintervals,providing aninternalinterruptsignaleachtimetheTimer/EventCounteroverflows.Tooperateinthismode, theOperatingModeSelectbitpair,TnM1/TnM0,intheTimerControlRegistermustbesettothe correctvalueasshown.ControlRegisterOperatingModeSelectBitsfortheTimerMode Bit7 Bit6 1 0 Inthismodetheinternalclock,fSYS,isusedastheinternalclockfor8-bitTimer/EventCounters. However,theclocksource,fSYS,forthe8-bittimerisfurtherdividedbyaprescaler,thevalueof whichisdeterminedbythePrescalerRateSelectbitsTnPSC2~TnPSC0,whicharebits2~0in theTimerControlRegister.AftertheotherbitsintheTimerControlRegisterhavebeensetup,the enablebitTnONorTnON,whichisbit4oftheTimerControlRegister,canbesethightoenable theTimer/EventCountertorun.Eachtimeaninternalclockcycleoccurs,theTimer/EventCounter incrementsbyone.Whenitisfullandoverflows,aninterruptsignalisgeneratedandtheTimer/ EventCounterwillreloadthevaluealreadyloadedintothepreloadregisterandcontinuecounting. TheinterruptcanbedisabledbyensuringthattheTimer/EventCounterInterruptEnablebitinthe correspondingInterruptControlRegister,isresettozero. In cr em en t Ti me r Co nt ro ll er Pr e sca le r Ou t put Ti me r + 1 Ti me r + 2 Ti me r + NT im er + N + 1 Timer Mode Timing Chart |
Numéro de pièce similaire - HT45R4U |
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Description similaire - HT45R4U |
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