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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT82B42RE датащи(PDF) 21 Page - Holtek Semiconductor Inc |
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HT82B42RE датащи(HTML) 21 Page - Holtek Semiconductor Inc |
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21 / 84 page  Rev. 1.10 �0 �ove��e� 0�� �01� Rev. 1.10 �1 �ove��e� 0�� �01� HT82B42R/HT82B42RE I/O MCU with USB Interface 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0A H 0B H 0C H 0D H 0E H 0F H 10H 11H 12H 13H 14H 15H 16H 17H 18H 19H 1A H 1B H 1C H 1D H 1E H 1F H 20H 21H 22H 23H 24H : U nus ed re ad a s "0 " IA R0 MP 0 IA R1 MP 1 BP AC C P CL TB LP TB LH WD TS ST AT US IN TC 0 TM R0 TM R0 C TM R1 H TM R1 L TM R1 C P A PAC P B PBC P E PEC SP IR IN TC 1 TB HP US C US R SC C SB CR SB DR 40H 41H 42H 43H 44H 45H 46H 47H 48H 49H 4A H U SB_ ST AT P IP E_ CT RL AW R ST AL L P IP E SI ES MI SC E NDP T_ EN FI FO 0 FI FO 1 FI FO 2 Ba nk 0B an k1 Special Purpose Data Memory Special Function Registers Toensuresuccessfuloperationofthemicrocontroller,certaininternalregistersareimplementedin theDataMemoryarea.Theseregistersensurecorrectoperationofinternalfunctionssuchastimers, interrupts,etc.,aswellasexternalfunctionssuchasI/Odatacontrol.Thelocationoftheseregisters withintheDataMemorybeginsattheaddress00H.AnyunusedDataMemorylocationsbetween thesespecialfunctionregistersandthepointwheretheGeneralPurposeMemorybeginsisreserved andattemptingtoreaddatafromtheselocationswillreturnavalueof00H. Indirect Addressing Register – IAR0, IAR1 TheIndirectAddressingRegisters,IAR0andIAR1,althoughhavingtheirlocationsinnormalRAM registerspace,donotactuallyphysicallyexistasnormalregisters.Themethodofindirectaddressing forRAMdatamanipulationusestheseIndirectAddressingRegistersandMemoryPointers,in contrasttodirectmemoryaddressing,wheretheactualmemoryaddressisspecified.Actionsonthe IAR0andIAR1registerswillresultinnoactualreadorwriteoperationtotheseregistersbutrather tothememorylocationspecifiedbytheircorrespondingMemoryPointer,MP0orMP1.Actingas apair,IAR0andMP0cantogetheronlyaccessdatafromBank0,whiletheIAR1andMP1register paircanaccessdatafrombothBank0andBank1.AstheIndirectAddressingRegistersarenot physicallyimplemented,readingtheIndirectAddressingRegistersindirectlywillreturnaresultof "00H"andwritingtotheregistersindirectlywillresultinnooperation. |
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