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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F5R датащи(PDF) 92 Page - Holtek Semiconductor Inc |
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HT45F5R датащи(HTML) 92 Page - Holtek Semiconductor Inc |
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92 / 138 page  Rev. 1.10 9� De�e��e� 1�� �01� Rev. 1.10 9� De�e��e� 1�� �01� HT45F5R Charger ASSP Flash MCU HT45F5R Charger ASSP Flash MCU A/D Converter Register Description OveralloperationoftheA/Dconverteriscontrolledusingfiveregisters.Areadonlyregisterpair existstostoretheADCdata12-bitvalue.Theremainingthreeregistersarecontrolregisterswhich setuptheoperatingandcontrolfunctionoftheA/Dconverter. Register Name Bit 7 6 5 4 3 2 1 0 SADOL(ADRFS=0) D� D� D1 D0 — — — — SADOL(ADRFS=1) D7 D� D5 D4 D� D� D1 D0 SADOH(ADRFS=0) D11 D10 D9 D8 D7 D� D5 D4 SADOH(ADRFS=1) — — — — D11 D10 D9 D8 SADC0 START ADBZ ADCEN ADRFS SACS� SACS� SACS1 SACS0 SADC1 SAINS� SAINS1 SAINS0 SAVRS1 SAVRS0 SACKS� SACKS1 SACKS0 A/D Converter Register List A/D Converter Data Registers – SADOL, SADOH Asthedevicecontainsaninternal12-bitA/Dconverter,itrequirestwodataregisterstostorethe convertedvalue.Theseareahighbyteregister,knownasSADOH,andalowbyteregister,known asSADOL.Aftertheconversionprocesstakesplace,theseregisterscanbedirectlyreadbythe microcontrollertoobtainthedigitisedconversionvalue.Asonly12bitsofthe16-bitregisterspace isutilised,theformatinwhichthedataisstorediscontrolledbytheADRFSbitintheSADC0 registerasshownintheaccompanyingtable.D0~D11aretheA/Dconversionresultdatabits. Anyunusedbitswillbereadaszero.NotethattheA/Dconverterdataregistercontentswillbe unchangediftheA/Dconverterisdisabled. ADRFS SADOH SADOL 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 0 D11 D10 D9 D8 D7 D� D5 D4 D� D� D1 D0 0 0 0 0 1 0 0 0 0 D11 D10 D9 D8 D7 D� D5 D4 D� D� D1 D0 A/D Converter Data Registers A/D Converter Control Registers – SADC0, SADC1 TocontrolthefunctionandoperationoftheA/Dconverter,twocontrolregistersknownasSADC0 andSADC1areprovided.These8-bitregistersdefinefunctionssuchastheselectionofwhich analogchannelisconnectedtotheinternalA/Dconverter,thedigitiseddataformat,theA/Dclock sourceaswellascontrollingthestartfunctionandmonitoringtheA/Dconverterbusystatus.Asthe devicecontainsonlyoneactualanalogtodigitalconverterhardwarecircuit,eachoftheexternal orinternalanalogsignalinputsmustberoutedtotheconverter.TheSACS3~SACS0bitsinthe SADC0registerareusedtodeterminewhichexternalchannelinputisselectedtobeconverted. TheSAINS2~SAINS0bitsintheSADC1registerareusedtodeterminethattheanalogsignaltobe convertedcomesfromtheinternalanalogsignalorexternalanalogchannelinput. Therelevantpin-sharedfunctionselectionbitsdeterminewhichpinsonI/OPortsareusedasanalog inputsfortheA/DconverterinputandwhichpinsarenottobeusedastheA/Dconverterinput. WhenthepinisselectedtobeanA/Dinput,itsoriginalfunctionwhetheritisanI/Oorotherpin- sharedfunctionwillberemoved.Inaddition,anyinternalpull-highresistorconnectedtothepinwill beautomaticallyremovedifthepinisselectedtobeanA/Dconverterinput. |
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