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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F5R 데이터시트(PDF) 74 Page - Holtek Semiconductor Inc |
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HT45F5R 데이터시트(HTML) 74 Page - Holtek Semiconductor Inc |
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74 / 138 page  Rev. 1.10 74 De�e��e� 1�� �01� Rev. 1.10 75 De�e��e� 1�� �01� HT45F5R Charger ASSP Flash MCU HT45F5R Charger ASSP Flash MCU Single Pulse Mode Toselectthismode,bitsSTM1andSTM0intheSTMC1registershouldbesetto10respectively andalsotheSTIO1andSTIO0bitsshouldbesetto11respectively.TheSinglePulseOutputMode, asthenamesuggests,willgenerateasingleshotpulseontheSTMoutputpin. ThetriggerforthepulseoutputleadingedgeisalowtohightransitionoftheSTONbit,whichcan beimplementedusingtheapplicationprogram.HoweverintheSinglePulseMode,theSTONbit canalsobemadetoautomaticallychangefromlowtohighusingtheexternalSTCKpin,whichwill inturninitiatetheSinglePulseoutput.WhentheSTONbittransitionstoahighlevel,thecounter willstartrunningandthepulseleadingedgewillbegenerated.TheSTONbitshouldremainhigh whenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbegeneratedwhenthe STONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramorwhena comparematchoccursfromComparatorA. HoweveracomparematchfromComparatorAwillalsoautomaticallycleartheSTONbitandthus generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrolthe pulsewidth.AcomparematchfromComparatorAwillalsogenerateaSTMinterrupt.Thecounter canonlyberesetbacktozerowhentheSTONbitchangesfromlowtohighwhenthecounter restarts.IntheSinglePulseModeCCRPisnotused.TheSTCCLRandSTDPXbitsarenotusedin thisMode. STON �it 0 à 1 S/W Co��and SET“STON” o� STCK Pin T�ansition STON �it 1 à 0 CCRA T�ailing Edge S/W Co��and CLR“STON” o� CCRA Co�pa�e Mat�h STP Output Pin Pulse Width = CCRA Value CCRA Leading Edge Single Pulse Generation |
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