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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F5R датащи(PDF) 25 Page - Holtek Semiconductor Inc |
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HT45F5R датащи(HTML) 25 Page - Holtek Semiconductor Inc |
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25 / 138 page  Rev. 1.10 �4 De�e��e� 1�� �01� Rev. 1.10 �5 De�e��e� 1�� �01� HT45F5R Charger ASSP Flash MCU HT45F5R Charger ASSP Flash MCU In Circuit Programming – ICP TheprovisionofFlashtypeProgramMemoryprovidestheuserwithameansofconvenientandeasy upgradesandmodificationstotheirprogramsonthesamedevice.Asanadditionalconvenience, Holtekhasprovidedameansofprogrammingthemicrocontrollerin-circuitusinga4-pininterface. Thisprovidesmanufacturerswiththepossibilityofmanufacturingtheircircuitboardscompletewith aprogrammedorun-programmedmicrocontroller,andthenprogrammingorupgradingtheprogram atalaterstage.Thisenablesproductmanufacturerstoeasilykeeptheirmanufacturedproducts suppliedwiththelatestprogramreleaseswithoutremovalandre-insertionofthedevice. TheHoltekFlashMCUtoWriterProgrammingPincorrespondencetableisasfollows: Holtek Writer Pins MCU Programming Pins Pin Description ICPDA PA0 P�og�a��ing Se�ial Data/Add�ess ICPCK PA� P�og�a��ing Clo�k VDD VDD Powe� Supply VSS VSS G�ound TheProgramMemoryandEEPROMdatamemorycanbothbeprogrammedseriallyin-circuitusing this4-wireinterface.Dataisdownloadedanduploadedseriallyonasinglepinwithanadditional linefortheclock.Twoadditionallinesarerequiredforthepowersupplyandground.Thetechnical detailsregardingthein-circuitprogrammingofthedevicearebeyondthescopeofthisdocument andwillbesuppliedinsupplementaryliterature. * * W�ite�_VDD ICPDA ICPCK W�ite�_VSS To othe� Ci��uit VDD PA0 PA� VSS W�ite� Conne�to� Signals MCU P�og�a��ing Pins Note:*mayberesistororcapacitor.Theresistanceof*mustbegreaterthan1kΩorthecapacitance of*mustbelessthan1nF. |
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