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HT45F2002 Datasheet(PDF) 22 Page - Holtek Semiconductor Inc |
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HT45F2002 Datasheet(HTML) 22 Page - Holtek Semiconductor Inc |
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22 / 31 page  Rev. 1.00 �� ���� 1�� �01� Rev. 1.00 �3 ���� 1�� �01� HT45F2002 2-Wire Communication Flash MCU HT45F2002 2-Wire Communication Flash MCU CPLA [m] ComplementDataMemorywithresultinACC Description EachbitofthespecifiedDataMemoryislogicallycomplemented(1′scomplement).Bitswhich previouslycontaineda1arechangedto0andviceversa.Thecomplementedresultisstoredin theAccumulatorandthecontentsoftheDataMemoryremainunchanged. Operation ACC←[m] Affectedflag(s) Z DAA [m] Decimal-AdjustACCforadditionwithresultinDataMemory Description ConvertthecontentsoftheAccumulatorvaluetoaBCD(BinaryCodedDecimal)value resultingfromthepreviousadditionoftwoBCDvariables.Ifthelownibbleisgreaterthan9 orifACflagisset,thenavalueof6willbeaddedtothelownibble.Otherwisethelownibble remainsunchanged.Ifthehighnibbleisgreaterthan9oriftheCflagisset,thenavalueof6 willbeaddedtothehighnibble.Essentially,thedecimalconversionisperformedbyadding 00H,06H,60Hor66HdependingontheAccumulatorandflagconditions.OnlytheCflag maybeaffectedbythisinstructionwhichindicatesthatiftheoriginalBCDsumisgreaterthan 100,itallowsmultipleprecisiondecimaladdition. Operation [m]←ACC+00Hor [m]←ACC+06Hor [m]←ACC+60Hor [m]←ACC+66H Affectedflag(s) C DEC [m] DecrementDataMemory Description DatainthespecifiedDataMemoryisdecrementedby1. Operation [m]←[m]−1 Affectedflag(s) Z DECA [m] DecrementDataMemorywithresultinACC Description DatainthespecifiedDataMemoryisdecrementedby1.Theresultisstoredinthe Accumulator.ThecontentsoftheDataMemoryremainunchanged. Operation ACC←[m]−1 Affectedflag(s) Z HALT Enterpowerdownmode Description Thisinstructionstopstheprogramexecutionandturnsoffthesystemclock.Thecontentsof theDataMemoryandregistersareretained.TheWDTandprescalerarecleared.Thepower downflagPDFissetandtheWDTtime-outflagTOiscleared. Operation TO←0 PDF←1 Affectedflag(s) TO,PDF INC [m] IncrementDataMemory Description DatainthespecifiedDataMemoryisincrementedby1. Operation [m]←[m]+1 Affectedflag(s) Z INCA [m] IncrementDataMemorywithresultinACC Description DatainthespecifiedDataMemoryisincrementedby1.TheresultisstoredintheAccumulator. ThecontentsoftheDataMemoryremainunchanged. Operation ACC←[m]+1 Affectedflag(s) Z |
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