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HT67F5652 bảng dữ liệu(PDF) 115 Page - Holtek Semiconductor Inc |
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HT67F5652 bảng dữ liệu(HTML) 115 Page - Holtek Semiconductor Inc |
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115 / 224 page ![]() Rev. 1.00 114 De�e��e� 0�� �01� Rev. 1.00 115 De�e��e� 0�� �01� HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU Single Pulse Mode Toselectthismode,bitsTnM1andTnM0intheSTMnC1registershouldbesetto10respectively andalsotheTnIO1andTnIO0bitsshouldbesetto11respectively.TheSinglePulseOutputMode, asthenamesuggests,willgenerateasingleshotpulseontheTMoutputpin. ThetriggerforthepulseoutputleadingedgeisalowtohightransitionoftheTnONbit,whichcan beimplementedusingtheapplicationprogram.HoweverintheSinglePulseMode,theTnONbit canalsobemadetoautomaticallychangefromlowtohighusingtheexternalTCKnpin,whichwill inturninitiatetheSinglePulseoutput.WhentheTnONbittransitionstoahighlevel,thecounter willstartrunningandthepulseleadingedgewillbegenerated.TheTnONbitshouldremainhigh whenthepulseisinitsactivestate.Thegeneratedpulsetrailingedgewillbegeneratedwhenthe TnONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramorwhena comparematchoccursfromComparatorA. HoweveracomparematchfromComparatorAwillalsoautomaticallycleartheTnONbitandthus generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrol thepulsewidth.AcomparematchfromComparatorAwillalsogenerateaTMinterrupt.Thecounter canonlyberesetbacktozerowhentheTnONbitchangesfromlowtohighwhenthecounter restarts.IntheSinglePulseModeCCRPisnotused.TheTnCCLRandTnDPXbitsarenotusedin thisMode. Leadi ng Ed ge Tn ON b it 0 ® 1 S/ W Co mm an d SET " Tn ON " or TC Kn P in T ra ns it io n Tn ON b it 1 ® 0 S/ W Co mm an d CL R "T nO N" or CCR A Ma tc h C om pa re Pu ls e Wi dt h = CCRA V al ue Tr a ili ng E dge TM n Ou tp ut P in Single Pulse Generation (n=3) |
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