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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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HT48R068B Folha de dados(PDF) 28 Page - Holtek Semiconductor Inc |
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HT48R068B Folha de dados(HTML) 28 Page - Holtek Semiconductor Inc |
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28 / 118 page  Rev. 1.30 �8 �e���a�� 0�� �01� Rev. 1.30 �9 �e���a�� 0�� �01� HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R069B Bit 7 6 5 4 3 2 1 0 BP — PMBP1 PMBP0 — — DMBP� DMBP1 DMBP0 R/W — R/W R/W — — R/W R/W R/W POR — 0 0 — — 0 0 0 Bit7 unimplemented,readas"0" Bit6,5 PMBP1, PMBP0:ProgramMemoryBankPointer 00:Bank0 01:Bank1 10:Bank2 11:Bank3 Bit4~3 unimplemented,readas"0" Bit2~0 DMBP2, DMBP1, DMBP0:DataMemoryBankPointer 000:Bank0 001:Bank1 010:Bank2 011:Bank3 100:Bank4 101:Bank5 110:Bank6 111:Bank7 Status Register – STATUS This8-bitregistercontainsthezeroflag(Z),carryflag(C),auxiliarycarryflag(AC),overflowflag (OV),powerdownflag(PDF),andwatchdogtime-outflag(TO).Thesearithmetic/logicaloperation andsystemmanagementflagsareusedtorecordthestatusandoperationofthemicrocontroller. WiththeexceptionoftheTOandPDFflags,bitsinthestatusregistercanbealteredbyinstructions likemostotherregisters.AnydatawrittenintothestatusregisterwillnotchangetheTOorPDFflag. Inaddition,operationsrelatedtothestatusregistermaygivedifferentresultsduetothedifferent instructionoperations.TheTOflagcanbeaffectedonlybyasystempower-up,aWDTtime-outor byexecutingthe"CLRWDT"or"HALT"instruction.ThePDFflagisaffectedonlybyexecuting the"HALT"or"CLRWDT"instructionorduringasystempower-up. TheZ,OV,ACandCflagsgenerallyreflectthestatusofthelatestoperations. Inaddition,onenteringaninterruptsequenceorexecutingasubroutinecall,thestatusregisterwill notbepushedontothestackautomatically.Ifthecontentsofthestatusregistersareimportantand iftheinterruptroutinecanchangethestatusregister,precautionsmustbetakentocorrectlysaveit. Notethatbits0~3oftheSTATUSregisterarebothreadableandwriteablebits. |
Nº de peça semelhante - HT48R068B_15 |
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Descrição semelhante - HT48R068B_15 |
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