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HT69F360 データシート(PDF) 55 Page - Holtek Semiconductor Inc |
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HT69F360 データシート(HTML) 55 Page - Holtek Semiconductor Inc |
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55 / 235 page  Rev. 1.30 54 �ove��e� 1�� �01� Rev. 1.30 55 �ove��e� 1�� �01� HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM STATUS Register Bit 7 6 5 4 3 2 1 0 �a�e SC CZ TO PDF OV Z AC C R/W R/W R/W 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:Thetheoperationalresultofdifferentflagsfordifferentinstructions ForSUB/SUBM/LSUB/LSUBMinstructions,theCZflagisequaltotheZflag. ForSBC/SBCM/LSBC/LSBCMinstructions,theCZflagisthe“AND”operationresult whichisperformedbythepreviousoperationCZflagandcurrentoperationzeroflag. 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:Anoperationresultsinacarryoutofthelownibblesinaddition,ornoborrow fromthehighnibbleintothelownibbleinsubtraction Bit0 C:Carryflag 0:Nocarry-out 1:Anoperationresultsinacarryduringanadditionoperationorifaborrowdoes nottakeplaceduringasubtractionoperation Cisalsoaffectedbyarotatethroughcarryinstruction. |
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