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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F65 데이터시트(PDF) 38 Page - Holtek Semiconductor Inc |
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HT45F65 데이터시트(HTML) 38 Page - Holtek Semiconductor Inc |
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38 / 231 page  Rev. 1.60 38 �ove��e� ��� �01� Rev. 1.60 39 �ove��e� ��� �01� HT45F65/HT45F66/HT45F67 Glucose Meter 8-Bit Flash MCU RAM Data Memory TheDataMemoryisavolatileareaof8-bitwideRAMinternalmemoryandisthelocationwhere temporaryinformationisstored.Dividedintothreesections,thefirstoftheseisanareaofRAM wherespecialfunctionregistersarelocated.Theseregistershavefixedlocationsandarenecessary forcorrectoperationofthedevices. Manyoftheseregisterscanbereadfromandwrittentodirectlyunderprogramcontrol,however,some remainprotectedfromusermanipulation.ThesecondareaofDataMemoryisreservedforgeneral purposeuse.Alllocationswithinthisareaarereadandwriteaccessibleunderprogramcontrol.The thirdareaisreservedfortheLCDMemory.ThisspecialareaofDataMemoryismappeddirectlyto theLCDdisplaysodatawrittenintothismemoryareawilldirectlyaffectthedisplayeddata. TheaddressesoftheLCDMemoryareaoverlapthoseintheGeneralPurposeDataMemoryarea. SwitchingbetweenthedifferentDataMemorybanksisachievedbysettingtheBankPointertothe correctvalue. Device Capacity Banks HT��F6� ��6×8 0: 80H~FFH 1: 80H~97F �: 80H~FFH HT��F66 HT��F67 �1�×8 0: 80H~FFH 1: 80H~9FH �: 80H~FFH 3: 80H~FFH �: 80H~FFH Structure TheDataMemoryissubdividedintoseveralbanks,allofwhichareimplementedin8-bitwide RAM.TheDataMemorylocatedinBank0issubdividedintotwosections,theSpecialPurpose DataMemoryandtheGeneralPurposeDataMemory. ThestartaddressoftheDataMemoryforthedeviceistheaddress00H.Registerswhichare commontoallmicrocontrollers,suchasACC,PCL,etc.,havethesameDataMemoryaddress.The LCDMemoryismappedintoBank1.TheotherbankscontainonlyGeneralPurposeDataMemory forthedevice.AstheSpecialPurposeDataMemoryregistersaremappedintoallbankareas,they cansubsequentlybeaccessedfromanybanklocation. 80 H 9F H FF H B ank 0 B ank 1 B ank 2 B ank 3 B ank 4 80 H 97 H FF H B ank 0 B ank 1 B ank 2 HT 45F 66/ HT 45F 67 HT 45F 65 General Purpose Data Memory |
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