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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F3W датащи(PDF) 77 Page - Holtek Semiconductor Inc |
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HT45F3W датащи(HTML) 77 Page - Holtek Semiconductor Inc |
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77 / 167 page  Rev. 1.50 7� De�e��e� 01� �01� Rev. 1.50 77 De�e��e� 01� �01� HT45F3W R-Type Blood Pressure Meter Flash MCU HT45F3W R-Type Blood Pressure Meter Flash MCU TM Clock Source TheclocksourcewhichdrivesthemaincounterineachTMcanoriginatefromvarioussources. TheselectionoftherequiredclocksourceisimplementedusingtheTnCK2~TnCK0bitsintheTM controlregisters.TheclocksourcecanbearatioofeitherthesystemclockfSYSortheinternalhigh clockfH,thefTBCclocksourceortheexternalTCKnpin.Notethatsettingthesebitstothevalue101 willselectareservedclockinput,ineffectdisconnectingtheTMclocksource.TheTCKnpinclock sourceisusedtoallowanexternalsignaltodrivetheTMasanexternalclocksourceorforevent counting. TM Interrupts TheCompactandStandardtypeTMseachhavetwointernalinterrupts,oneforeachoftheinternal comparatorAorcomparatorP,whichgenerateaTMinterruptwhenacomparematchcondition occurs.WhenaTMinterruptisgenerateditcanbeusedtoclearthecounterandalsotochangethe stateoftheTMoutputpin. TM External Pins EachoftheTMs,irrespectiveofwhattype,hasoneTMinputpin,withthelabelTCKn.TheTM inputpinisessentiallyaclocksourcefortheTMandisselectedusingtheTnCK2~TnCK0bitsin theTMnC0register.ThisexternalTMinputpinallowsanexternalclocksourcetodrivetheinternal TM.ThisexternalTMinputpinissharedwithotherfunctionsbutwillbeconnectedtotheinternal TMifselectedusingtheTnCK2~TnCK0bits.TheTMinputpincanbechosentohaveeithera risingorfallingactiveedge. TheTMseachhavetwooutputpinswiththelabelTPn_0andTPn_1.WhentheTMisinthe CompareMatchOutputMode,thesepinscanbecontrolledbytheTMtoswitchtoahighorlow levelortotogglewhenacomparematchsituationoccurs.TheexternalTPnoutputpinisalsothe pinwheretheTMgeneratesthePWMoutputwaveform.AstheTMoutputpinsarepin-sharedwith otherfunction,theTMoutputfunctionmustfirstbesetupusingregisters.Asinglebitinoneofthe registersdeterminesifitsassociatedpinistobeusedasanexternalTMoutputpinorifitistohave anotherfunction. AllTMoutputpinnameshavea“_n”suffix.Pinnamesthatincludea“_0”or“_1”suffixindicate thattheyarefromaTMwithmultipleoutputpins.ThisallowstheTMtogenerateacomplimentary outputpair,selectedusingtheI/Oregisterdatabits. Device CTM STM HT45F3W TP0_0� TP0_1�TP1_0� TP1_1 TP�_0� TP�_1 TM Output Pins |
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