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HT45F65 Datasheet(PDF) 136 Page - Holtek Semiconductor Inc |
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HT45F65 Datasheet(HTML) 136 Page - Holtek Semiconductor Inc |
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136 / 231 page  Rev. 1.60 136 �ove��e� ��� �01� Rev. 1.60 137 �ove��e� ��� �01� HT45F65/HT45F66/HT45F67 Glucose Meter 8-Bit Flash MCU Single Pulse Mode Toselectthismode,therequiredbitpairs,T1AM1,T1AM0andT1BM1,T1BM0shouldbesetto 10respectivelyandalsothecorrespondingT1AIO1,T1AIO0andT1BIO1,T1BIO0bitsshouldbe setto11respectively.TheSinglePulseOutputMode,asthenamesuggests,willgenerateasingle shotpulseontheTMoutputpin. ThetriggerforthepulseTP1AoutputleadingedgeisalowtohightransitionoftheT1ONbit,which canbeimplementedusingtheapplicationprogram.ThetriggerforthepulseTP1Boutputleading edgeisacomparematchfromComparatorB,whichcanbeimplementedusingtheapplication program.HoweverintheSinglePulseMode,theT1ONbitcanalsobemadetoautomatically changefromlowtohighusingtheexternalTCK1pin,whichwillinturninitiatetheSinglePulse outputofTP1A.WhentheT1ONbittransitionstoahighlevel,thecounterwillstartrunningand thepulseleadingedgeofTP1Awillbegenerated.TheT1ONbitshouldremainhighwhenthepulse isinitsactivestate.ThegeneratedpulsetrailingedgeofTP1AandTP1Bwillbegeneratedwhen theT1ONbitisclearedtozero,whichcanbeimplementedusingtheapplicationprogramorwhena comparematchoccursfromComparatorA. HoweveracomparematchfromComparatorAwillalsoautomaticallycleartheT1ONbitandthus generatetheSinglePulseoutputtrailingedgeofTP1AandTP1B.InthiswaytheCCRAvaluecan beusedtocontrolthepulsewidthofTP1A.TheCCRA-CCRBvaluecanbeusedtocontrolthe pulsewidthofTP1B.AcomparematchfromComparatorAandComparatorBwillalsogenerate TMinterrupts.ThecountercanonlyberesetbacktozerowhentheT1ONbitchangesfromlowto highwhenthecounterrestarts.IntheSinglePulseModeCCRPisnotused.TheT1CCLRbitisalso notused. CCRA 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 CCRA C om par e Ma tc h Pu ls e Wi dt h = CCRA V al ue CCRA Tr a ili ng E dge TP nA O ut put P in TP nB O ut put P in Co un te r Va lu e CCRA C CRB 0 Ti me Tn ON =1 Tn ON b it 1 ® 0 S/ W Co mm an d CL R "T nO N" or CCRA C om pa re Ma tc h Pu ls e Wi dt h = ( CCR A- CCRB ) Va lu e CCRB Tr ai li ng E dge CCRB Leadi ng Ed ge C CRB C om pa re Ma tc h Single Pulse Generation (n=1) |
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