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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F4M датащи(PDF) 74 Page - Holtek Semiconductor Inc |
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HT45F4M датащи(HTML) 74 Page - Holtek Semiconductor Inc |
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74 / 138 page  Rev. 1.10 74 �an�a�� 1�� �01� Rev. 1.10 7� �an�a�� 1�� �01� HT45F4M Lithium Battery Backup Power ASSP MCU HT45F4M Lithium Battery Backup Power ASSP MCU TM1C1 Register Bit 7 6 5 4 3 2 1 0 Name T1M1 T1M0 T1IO1 T1IO0 T1OC T1POL T1CAPTS T1CCLR R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7~6 T1M1~T1M0:SelectTM1OperationMode 00:CompareMatchOutputMode 01:CaptureInputMode 10:PWMModeorSinglePulseOutputMode 11:Timer/CounterMode ThesebitssetuptherequiredoperatingmodefortheTM.Toensurereliableoperation theTMshouldbeswitchedoffbeforeanychangesaremadetotheT1M1andT1M0 bits.IntheTimer/CounterMode,theTMoutputpincontrolmustbedisabled. Bit5~4 T1IO1~T1IO0:SelectTP1_0,TP1_1outputfunction CompareMatchOutputMode 00:Nochange 01:Outputlow 10:Outputhigh 11:Toggleoutput PWMMode/SinglePulseOutputMode 00:PWMOutputinactivestate 01:PWMOutputactivestate 10:PWMoutput 11:Singlepulseoutput CaptureinputMode 00:InputcaptureatrisingedgeofTP1_0,TP1_1 01:InputcaptureatfallingedgeofTP1_0,TP1_1 01:Inputcaptureatfalling/risingedgeofTP1_0,TP1_1 11:Inputcapturedisabled Timer/CounterMode Unused. ThesetwobitsareusedtodeterminehowtheTMoutputpinchangesstatewhena certainconditionisreached.Thefunctionthatthesebitsselectdependsuponinwhich modetheTMisrunning. IntheCompareMatchOutputMode,theT1IO1andT1IO0bitsdeterminehowthe TMoutputpinchangesstatewhenacomparematchoccursfromtheComparatorA. TheTMoutputpincanbesetuptoswitchhigh,switchlowortotoggleitspresent statewhenacomparematchoccursfromtheComparatorA.Whenthebitsareboth zero,thennochangewilltakeplaceontheoutput.TheinitialvalueoftheTMoutput pinshouldbesetupusingtheT1OCbitintheTM1C1register.Notethattheoutput levelrequestedbytheT1IO1andT1IO0bitsmustbedifferentfromtheinitialvalue setupusingtheT1OCbitotherwisenochangewilloccurontheTMoutputpinwhen acomparematchoccurs.AftertheTMoutputpinchangesstate,itcanberesettoits initiallevelbychangingtheleveloftheT1ONbitfromlowtohigh. InthePWMMode,theT1IO1andT1IO0bitsdeterminehowtheTMoutputpin changesstatewhenacertaincomparematchconditionoccurs.ThePWMoutput functionismodifiedbychangingthesetwobits.Itisnecessarytochangethevalues oftheT1IO1andT1IO0bitsonlyaftertheTMhasbeenswitchedoff.Unpredictable PWMoutputswilloccuriftheT1IO1andT1IO0bitsarechangedwhentheTMis running. |
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