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HT46R068B Folha de dados(PDF) 23 Page - Holtek Semiconductor Inc |
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HT46R068B Folha de dados(HTML) 23 Page - Holtek Semiconductor Inc |
23 / 135 page Rev. 1.50 �� �e���a�� 05� �015 Rev. 1.50 �3 �e���a�� 05� �015 HT46R068B/HT46R069B Enhanced A/D 8-Bit OTP MCU HT46R068B/HT46R069B Enhanced A/D 8-Bit OTP MCU Data Memory TheDataMemoryisavolatileareaof8-bitwideRAMinternalmemoryandisthelocationwhere temporaryinformationisstored. Structure Dividedintotwosections,thefirstoftheseisanareaofRAMwherespecialfunctionregistersare located.Theseregistershavefixedlocationsandarenecessaryforcorrectoperationofthedevice. Manyoftheseregisterscanbereadfromandwrittentodirectlyunderprogramcontrol,however, someremainprotectedfromusermanipulation.ThesecondareaofDataMemoryisreservedfor generalpurposeuse.Alllocationswithinthisareaarereadandwriteaccessibleunderprogram control. Device Capacity Banks HT46R068B 51�x8 0~3 HT46R069B 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. |
Nº de peça semelhante - HT46R068B_15 |
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Descrição semelhante - HT46R068B_15 |
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