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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT67F5652 датащи(PDF) 42 Page - Holtek Semiconductor Inc |
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HT67F5652 датащи(HTML) 42 Page - Holtek Semiconductor Inc |
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42 / 224 page  Rev. 1.00 4� De�e��e� 0�� �01� Rev. 1.00 43 De�e��e� 0�� �01� HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU Inaddition,onenteringaninterruptsequenceorexecutingasubroutinecall,thestatusregisterwill notbepushedontothestackautomatically.Ifthecontentsofthestatusregistersareimportantandif thesubroutinecancorruptthestatusregister,precautionsmustbetakentocorrectlysaveit. • STATUS Register Bit 7 6 5 4 3 2 1 0 Na�e SC CZ TO PDF OV Z AC C R/W R R R R R/W R/W R/W R/W POR x x 0 0 x x x x "x" unknown Bit7 SC:Theresultofthe"XOR"operationwhichisperformedbytheOVflagandthe MSBoftheinstructionoperationresult. Bit6 CZ:Theoperationalresultofdifferentflagsfordifferentinstructions. ForSUB/SUBM/LSUB/LSUBMinstructions,theCZflagisequaltotheZflag. ForSBC/SBCM/LSBC/LSBCMinstructions,theCZflagisthe"AND"operation resultwhichisperformedbythepreviousoperationCZflagandcurrentoperationzero flag. Forotherinstructions,theCZflagwillnotbeaffected. Bit5 TO:WatchdogTime-Outflag 0:Afterpoweruporexecutingthe"CLRWDT"or"HALT"instruction 1:Awatchdogtime-outoccurred. Bit4 PDF:Powerdownflag 0:Afterpoweruporexecutingthe"CLRWDT"instruction 1:Byexecutingthe"HALT"instruction Bit3 OV:Overflowflag 0:nooverflow 1:anoperationresultsinacarryintothehighest-orderbitbutnotacarryoutofthe highest-orderbitorviceversa. Bit2 Z:Zeroflag 0:Theresultofanarithmeticorlogicaloperationisnotzero 1:Theresultofanarithmeticorlogicaloperationiszero Bit1 AC:Auxiliaryflag 0:noauxiliarycarry 1:anoperationresultsinacarryoutofthelownibbles,inaddition,ornoborrow fromthehighnibbleintothelownibbleinsubtraction Bit0 C:Carryflag 0:nocarry-out 1:anoperationresultsinacarryduringanadditionoperationorifaborrowdoesnot takeplaceduringasubtractionoperation Cisalsoaffectedbyarotatethroughcarryinstruction. |
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