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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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HT48R068B Datenblatt(PDF) 22 Page - Holtek Semiconductor Inc |
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HT48R068B Datenblatt(HTML) 22 Page - Holtek Semiconductor Inc |
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22 / 118 page  Rev. 1.30 �� �e���a�� 0�� �01� Rev. 1.30 �3 �e���a�� 0�� �01� HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU Data Memory TheDataMemoryisavolatileareaof8-bitwideRAMinternalmemoryandisthelocationwhere temporaryinformationisstored. Structure Dividedintotwosections,thefirstoftheseisanareaofRAMwherespecialfunctionregistersare located.Theseregistershavefixedlocationsandarenecessaryforcorrectoperationofthedevice. Manyoftheseregisterscanbereadfromandwrittentodirectlyunderprogramcontrol,however, someremainprotectedfromusermanipulation.ThesecondareaofDataMemoryisreservedfor generalpurposeuse.Alllocationswithinthisareaarereadandwriteaccessibleunderprogram control. Device Capacity Banks HT48R068B �1�x8 0~3 HT48R069B 10�4x8 0~7 ThetwosectionsofDataMemory,theSpecialPurposeandGeneralPurposeDataMemoryare locatedatconsecutivelocations.AllareimplementedinRAMandare8bitswidebutthelengthof eachmemorysectionisdictatedbythetypeofmicrocontrollerchosen.ThestartaddressoftheData Memoryforalldevicesistheaddress"00H". Allmicrocontrollerprogramsrequireanareaofread/writememorywheretemporarydatacanbe storedandretrievedforuselater.ItisthisareaofRAMmemorythatisknownasGeneralPurpose DataMemory.ThisareaofDataMemoryisfullyaccessiblebytheuserprogramforbothreadand writeoperations.Byusingthe"SET[m].i"and"CLR[m].i"instructionsindividualbitscanbeset orresetunderprogramcontrolgivingtheuseralargerangeofflexibilityforbitmanipulationinthe DataMemory. Forsomedevices,theDataMemoryissubdividedintoseveralbanks,whichareselectedusing aBankPointer.OnlydatainBank0canbedirectlyaddressed,datainBank1~Bank7mustbe indirectlyaddressed. |
Ähnliche Teilenummer - HT48R068B_15 |
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Ähnliche Beschreibung - HT48R068B_15 |
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