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データシートサーチシステム |
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データシートサーチシステム |
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HT46R0042 データシート(PDF) 52 Page - Holtek Semiconductor Inc |
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HT46R0042 データシート(HTML) 52 Page - Holtek Semiconductor Inc |
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52 / 83 page  Rev. 1.00 5� ��to�e� ��� �01� Rev. 1.00 53 ��to�e� ��� �01� HT46R0042 Cost-Effective A/D 8-Bit OTP MCU HT46R0042 Cost-Effective A/D 8-Bit OTP MCU • Step7 Tocheckwhentheanalogtodigitalconversionprocessiscomplete,theEOCBbitintheADCR0 registercanbepolled.Theconversionprocessiscompletewhenthisbitgoeslow.Whenthis occurstheA/DdataregistersADRLandADRHcanbereadtoobtaintheconversionvalue.Asan alternativemethod,iftheinterruptsareenabledandthestackisnotfull,theprogramcanwaitfor anA/Dinterrupttooccur. Note:Whencheckingfortheendoftheconversionprocess,ifthemethodofpollingtheEOCB bitintheADCR0registerisused,theinterruptenablestepabovecanbeomitted. Theaccompanyingdiagramshowsgraphicallythevariousstagesinvolvedinananalogtodigital conversionprocessanditsassociatedtiming. t AD C A/ D c onv er si on ti me xxx B 010B ST AR T EO CB AC S2 ~ AC S0 Po we r- on Re se t En d of A /D co nv er si on 1: D ef i ne po rt c on fi gu ra ti on 2: S el ec t a na lo g ch annel St ar t o f A/ D co nv er si on Re se t A /D co nv er te r A/ D sa mp li ng ti me t A DCS 000B St ar t o f A/ D co nv er si on Re se t A /D co nv er te r 001B St ar t o f A /D co nv er si on Re se t A/ D co nv er te r En d of A /D co nv er si on A/ D sa mp li ng ti me t A DCS of f on on t ON 2S T t AD C A/ D c onv er si on ti me of f AD ON B A DC Mo du le ON 000B P CR7 ~ P CR0 xxx B - P CR[ 7: 0 ] i s not equal t o "0 " No te : A /D c lo ck m us t be f SY S , f SY S /2 , f SY S /4 , f SY S /8 , f SY S /1 6 or f SY S /3 2 t A DCS =4 t AD t AD C =1 6t AD A/D Conversion Timing ThesettingupandoperationoftheA/Dconverterfunctionisfullyunderthecontrolofthe applicationprogramastherearenoconfigurationoptionsassociatedwiththeA/Dconverter. AfteranA/Dconversionprocesshasbeeninitiatedbytheapplicationprogram,themicrocontroller internalhardwarewillbegintocarryouttheconversion,duringwhichtimetheprogramcan continuewithotherfunctions.ThetimetakenfortheA/Dconversionis16tADwheretADisequalto theA/Dclockperiod. |
同様の部品番号 - HT46R0042 |
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同様の説明 - HT46R0042 |
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