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HT45F3630 Datasheet(PDF) 21 Page - Holtek Semiconductor Inc |
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HT45F3630 Datasheet(HTML) 21 Page - Holtek Semiconductor Inc |
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21 / 137 page  Rev. 1.00 �0 �a��� 0�� �01� Rev. 1.00 �1 �a��� 0�� �01� HT45F3630 Power Tool Controller 8-Bit Flash MCU HT45F3630 Power Tool Controller 8-Bit 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�amming Se�ial Data/Add�ess ICPCK PA� P�og�amming Clo�k VDD VDD Powe� Supply VSS VSS G�ound TheProgramMemoryandEEPROMDataMemorycanbeprogrammedseriallyin-circuitusingthis 4-wireinterface.Dataisdownloadedanduploadedseriallyonasinglepinwithanadditionalline fortheclock.Twoadditionallinesarerequiredforthepowersupply.Thetechnicaldetailsregarding thein-circuitprogrammingofthedevicearebeyondthescopeofthisdocumentandwillbesupplied insupplementaryliterature. Duringtheprogrammingprocess,takingcontroloftheICPDAandICPCKpinsfordataandclock programmingpurposes.Theusermusttheretakecaretoensurethatnootheroutputsareconnected tothesetwopins. * * W�ite�_VDD ICPDA ICPCK W�ite�_VSS To ot�e� Ci��uit VDD PA0 PA� VSS W�ite� Conne�to� Signals �CU P�og�amming Pins Note:*mayberesistororcapacitor.Theresistanceof*mustbegreaterthan1korthecapacitance of*mustbelessthan1nF. |
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