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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45FM2C датащи(PDF) 82 Page - Holtek Semiconductor Inc |
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HT45FM2C датащи(HTML) 82 Page - Holtek Semiconductor Inc |
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82 / 171 page  Rev. 1.10 8� �a� �0� �01� Rev. 1.10 8� �a� �0� �01� HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU Preliminar� I/P O/P Noise Filter Sampling Noise Filter with CAPNFT and CATNFS = 0 Infrared Receiver Thedevicecontainsafunctionblocktoreceivesignalsfrominfraredremotecontrols.Thesecircuits assistwiththeimplementationofintegratedremotecontrolfunctionsforremotemotorcontrol. Functional Description Theinfraredreceiverfunctionalblockcontainsanumberofunitstofacilitatetheimplementation ofinfraredsignaldecodingsuchasIRcodereceivercircuit,noisefilter,RMTcapturecircuitand RMTEcontrol. Noise Filter IO CKT IR RX CKT IR TX :SC5104 8-bitx� R�T R�T0F R�TVF R�T1F R�T0 R�T1 R�TE_CTL R�TE IR_RX Block 10-bit CT� CT�_Int RX_IN RX_Int Infrared Receiver Block Diagram TheexternalRX_INpinisconnectedtoaninternalfiltertoreducethepossibilityofunwantedevent countingeventsorinaccuratepulsewidthmeasurementsduetoadversenoiseorspikesontheRX_ INinputsignal.InordertoensurethattheIRCodeRxcircuitandthemotorcontrolcircuitworks normally. TheRMTCapturecircuitisimplementedusingtwo8-bitRMTcircuits,RMT0andRMT1registers todecodeIR.AstheIRcodecanbetransmittedrepeatedly,theRMTEcontrolcircuitcanmakethe decodingtimeshortandreducetheeffectswhichgeneratedbytheremotecontrollingonthemotor controlling.ThenoisefiltercircuitisaI/Ofilteringsurgecomparewhichcanfiltermicro-second gradesharp-noise. Antinoisepulsewidthmaximum:(NF_VIH[5:0]-NF_VIL[5:0])×5μs |
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