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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT68F005 датащи(PDF) 33 Page - Holtek Semiconductor Inc |
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HT68F005 датащи(HTML) 33 Page - Holtek Semiconductor Inc |
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33 / 93 page  Rev. 1.00 3� ��to�e� ��� �01� Rev. 1.00 33 ��to�e� ��� �01� HT68F005/HT68F006 Enhanced I/O Flash Type MCU HT68F005/HT68F006 Enhanced I/O Flash Type MCU • IDLE1Mode TheIDLE1ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterishighandtheFSYSONbitintheCTRLregisterishigh.IntheIDLE1Mode thesystemoscillatorwillbeinhibitedfromdrivingtheCPUbutmaycontinuetoprovideaclock sourcetokeepsomeperipheralfunctionsoperationalsuchastheTimeBaseandTMs.Inthe IDLE1Mode,thesystemoscillatorwillcontinuetorun,andthissystemoscillatormaybethehigh orlowspeedsystemoscillator.IntheIDLE1ModetheWatchdogTimerclock,fLIRC,willbeon. Control Register Asingleregister,SMOD,isusedforoverallcontroloftheinternalclockswithinthesedevices. SMOD Register Bit 7 6 5 4 3 2 1 0 Name CKS� CKS1 CKS0 FSTEN LT� HT� IDLEN HLCLK R/W R/W R/W R/W R/W R R R/W R/W P�R 0 0 0 0 0 0 1 1 Bit7~5 CKS2~CKS0:ThesystemclockselectionwhenHLCLKis“0” 000:fL(fLIRC) 001:fL(fLIRC) 010:fH/64 011:fH/32 100:fH/16 101:fH/8 110:fH/4 111:fH/2 Thesethreebitsareusedtoselectwhichclockisusedasthesystemclocksource. InadditiontothesystemclocksourcetheLIRC,adividedversionofthehighspeed systemoscillatorcanalsobechosenasthesystemclocksource. Bit4 FSTEN:FastWake-upControl(onlyforHXT) 0:Disable 1:Enable ThisistheFastWake-upControlbitwhichdeterminesifthefLIRCclocksourceis initiallyusedafterthedeviceswakeup.Whenthebitishigh,thefLIRCclocksourcecan beusedasatemporarysystemclocktoprovideafasterwakeuptimeasthefLIRCclock isavailable. Bit3 LTO:Lowspeedsystemoscillatorreadyflag 0:Notready 1:Ready Thisisthelowspeedsystemoscillatorreadyflagwhichindicateswhenthelowspeed systemoscillatorisstableafterpoweronresetorawake-uphasoccurred.Theflag willbelowwhenintheSLEEP0Modebutafterawake-uphasoccurred,theflagwill changetoahighlevelafter1~2clockcyclesiftheLIRCoscillatorisused. Bit2 HTO:Highspeedsystemoscillatorreadyflag 0:Notready 1:Ready Thisisthehighspeedsystemoscillatorreadyflagwhichindicateswhenthehighspeed systemoscillatorisstable.Thisflagisclearedto“0”byhardwarewhenthedevicesare poweredonandthenchangestoahighlevelafterthehighspeedsystemoscillatoris stable.Thereforethisflagwillalwaysbereadas“1”bytheapplicationprogramafter devicepower-on.TheflagwillbelowwhenintheSLEEPorIDLE0Modebutafter awake-uphasoccurred,theflagwillchangetoahighlevelafter1024clockcyclesif theHXToscillatorisused. |
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