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HT45F2020 датащи(PDF) 74 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 74 Page - Holtek Semiconductor Inc |
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74 / 85 page ![]() Rev. 1.00 74 April 11, 2017 Rev. 1.00 75 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU CALL addr Subroutinecall Description Unconditionallycallsasubroutineatthespecifiedaddress.TheProgramCounterthen incrementsby1toobtaintheaddressofthenextinstructionwhichisthenpushedontothe stack.Thespecifiedaddressisthenloadedandtheprogramcontinuesexecutionfromthis newaddress.Asthisinstructionrequiresanadditionaloperation,itisatwocycleinstruction. Operation Stack←ProgramCounter+1 ProgramCounter←addr Affectedflag(s) None CLR [m] ClearDataMemory Description EachbitofthespecifiedDataMemoryisclearedto0. Operation [m]←00H Affectedflag(s) None CLR [m].i ClearbitofDataMemory Description BitiofthespecifiedDataMemoryisclearedto0. Operation [m].i←0 Affectedflag(s) None CLR WDT ClearWatchdogTimer Description TheTO,PDFflagsandtheWDTareallcleared. Operation WDTcleared TO←0 PDF←0 Affectedflag(s) TO,PDF CLR WDT1 Pre-clearWatchdogTimer Description TheTO,PDFflagsandtheWDTareallcleared.Notethatthisinstructionworksin conjunctionwithCLRWDT2andmustbeexecutedalternatelywithCLRWDT2tohave effect.RepetitivelyexecutingthisinstructionwithoutalternatelyexecutingCLRWDT2will havenoeffect. Operation WDTcleared TO←0 PDF←0 Affectedflag(s) TO,PDF CLR WDT2 Pre-clearWatchdogTimer Description TheTO,PDFflagsandtheWDTareallcleared.Notethatthisinstructionworksinconjunction withCLRWDT1andmustbeexecutedalternatelywithCLRWDT1tohaveeffect. RepetitivelyexecutingthisinstructionwithoutalternatelyexecutingCLRWDT1willhaveno effect. Operation WDTcleared TO←0 PDF←0 Affectedflag(s) TO,PDF CPL [m] ComplementDataMemory Description EachbitofthespecifiedDataMemoryislogicallycomplemented(1′scomplement).Bitswhich previouslycontaineda1arechangedto0andviceversa. Operation [m]←[m] Affectedflag(s) Z |
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