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HT66F019 Datasheet(PDF) 104 Page - Holtek Semiconductor Inc |
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HT66F019 Datasheet(HTML) 104 Page - Holtek Semiconductor Inc |
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104 / 175 page  Rev. 1.00 104 De�e��e� 01� �01� Rev. 1.00 105 De�e��e� 01� �01� HT66F019 A/D Flash MCU with EEPROM HT66F019 A/D Flash MCU with EEPROM • SADC0 Register Bit 7 6 5 4 3 2 1 0 Na�e START ADBZ ADCEN ADRFS SACS3 SACS� SACS1 SACS0 R/W R/W R R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7 START:StarttheA/Dconversion 0→1→0:StartA/Dconversion ThisbitisusedtoinitiateanA/Dconversionprocess.Thebitisnormallylowbutifset highandthenclearedlowagain,theA/Dconverterwillinitiateaconversionprocess. Bit6 ADBZ:A/Dconverterbusyflag 0:NoA/Dconversionisinprogress 1:A/Dconversionisinprogress ThisreadonlyflagisusedtoindicatewhethertheA/Dconversionisinprogressor not.WhentheSTARTbitissetfromlowtohighandthentolowagain,theADBZflag willbesetto1toindicatethattheA/Dconversionisinitiated.TheADBZflagwillbe clearedto0aftertheA/Dconversioniscomplete. Bit5 ADCEN:A/Dconverterfunctionenablecontrol 0:Disable 1:Enable ThisbitcontrolstheA/Dinternalfunction.Thisbitshouldbesettoonetoenable theA/Dconverter.Ifthebitissetlow,thentheA/Dconverterwillbeswitchedoff reducingthedevicepowerconsumption.WhentheA/Dconverterfunctionisdisabled, thecontentsoftheA/DdataregisterpairknownasSADOHandSADOLwillnotbe cleared. Bit4 ADRFS:A/Dconverterdataformatselect 0:A/Dconverterdataformat→SADOH=D[11:4];SADOL=D[3:0] 1:A/Dconverterdataformat→SADOH=D[11:8];SADOL=D[7:0] Thisbitcontrolstheformatofthe12-bitconvertedA/DvalueinthetwoA/Ddata registers.DetailsareprovidedintheA/Ddataregistersection. Bit3~0 SACS3~SACS0:A/Dconverterexternalanalogchannelinputselect 0000:AN0 0001:AN1 0010:AN2 0011:AN3 0100:AN4 0101:AN5 0110:AN6 0111:AN7 1000~1111:Un-existedchannel,theexternalinputisfloating |
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