전자부품 데이터시트 검색엔진 |
|
HT48R068B 데이터시트(PDF) 24 Page - Holtek Semiconductor Inc |
|
HT48R068B 데이터시트(HTML) 24 Page - Holtek Semiconductor Inc |
24 / 118 page Rev. 1.30 �4 �e���a�� 0�� �01� Rev. 1.30 �� �e���a�� 0�� �01� HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU Special Function Registers Toensuresuccessfuloperationofthemicrocontroller,certaininternalregistersareimplementedin theDataMemoryarea.Theseregistersensurecorrectoperationofinternalfunctionssuchastimers, interrupts,etc.,aswellasexternalfunctionssuchasI/Odatacontrol.Thelocationoftheseregisters withintheDataMemorybeginsattheaddress"00H"andaremappedfromBank0toBank7.Any unusedDataMemorylocationsbetweenthesespecialfunctionregistersandthepointwherethe GeneralPurposeMemorybeginsisreservedandattemptingtoreaddatafromtheselocationswill returnavalueof"00H". Indirect Addressing Registers – IAR0, IAR1 TheIndirectAddressingRegisters,IAR0andIAR1,althoughhavingtheirlocationsinnormalRAM registerspace,donotactuallyphysicallyexistasnormalregisters.Themethodofindirectaddressing forRAMdatamanipulationusestheseIndirectAddressingRegistersandMemoryPointers,in contrasttodirectmemoryaddressing,wheretheactualmemoryaddressisspecified.Actionsonthe IAR0andIAR1registerswillresultinnoactualreadorwriteoperationtotheseregistersbutrather tothememorylocationspecifiedbytheircorrespondingMemoryPointer,MP0orMP1.Actingas apair,IAR0withMP0andIAR1withMP1cantogetheraccessdatafromtheDataMemory.As theIndirectAddressingRegistersarenotphysicallyimplemented,readingtheIndirectAddressing Registersindirectlywillreturnaresultof"00H"andwritingtotheregistersindirectlywillresultin nooperation. Memory Pointers – MP0, MP1 TwoMemoryPointers,knownasMP0andMP1areprovided.TheseMemoryPointersare physicallyimplementedintheDataMemoryandcanbemanipulatedinthesamewayasnormal registersprovidingaconvenientwaywithwhichtoindirectlyaddressandtrackdata.MP0canonly beusedtoindirectlyaddressdatainBank0whileMP1canbeusedtoaddressdatafromBank0 andBank7.WhenanyoperationtotherelevantIndirectAddressingRegistersiscarriedout,the actualaddressthatthemicrocontrollerisdirectedto,istheaddressspecifiedbytherelatedMemory Pointer.NotethatindirectaddressingusingMP1andIAR1mustbeusedtoaccessanydatainBank 1~Bank7.ThefollowingexampleshowshowtoclearasectionoffourDataMemorylocations alreadydefinedaslocationsadres1toadres4. HT48R068B HT48R069B 00H IAR0 IAR0 01H MP0 MP0 0�H IAR1 IAR1 03H MP1 MP1 04H BP BP 0�H ACC ACC 06H PCL PCL 07H TBLP TBLP 08H TBLH TBLH 09H WDTS WDTS 0AH STATUS STATUS 0BH INTC0 INTC0 0CH TMR0 TMR0 0DH TMR0C TMR0C 0EH TMR1 TMR1 |
유사한 부품 번호 - HT48R068B_15 |
|
유사한 설명 - HT48R068B_15 |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |