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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F75 датащи(PDF) 49 Page - Holtek Semiconductor Inc |
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HT45F75 датащи(HTML) 49 Page - Holtek Semiconductor Inc |
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49 / 190 page  Rev. 1.10 �8 De�e��e� 1�� �01� Rev. 1.10 �9 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU uponthefSclocksource.IfthesourceisfSYS/4thenthefSclockwillbeoff,andifthesourcecomes fromfSUBthenfSwillbeon. IDLE1 Mode TheIDLE1ModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterishighandtheFSYSONbitintheCTRLregisterishigh.IntheIDLE1Mode thesystemoscillatorwillbeinhibitedfromdrivingtheCPUbutmaycontinuetoprovideaclock sourcetokeepsomeperipheralfunctionsoperationalsuchastheWatchdogTimer,TMsandSIM.In theIDLE1Mode,thesystemoscillatorwillcontinuetorun,andthissystemoscillatormaybehigh speedorlowspeedsystemoscillator.IntheIDLE1ModetheWatchdogTimerclock,fS,willbeon. IfthesourceisfSYS/4thenthefSclockwillbeon,andifthesourcecomesfromfSUBthenfSwillbe on. Control Register Theregisters,SMODandCTRL,areusedforoverallcontroloftheinternalclockswithinthe device. SMOD Register Bit 7 6 5 4 3 2 1 0 Na�e CKS� CKS1 CKS0 FSTEN LTO HTO IDLEN HLCLK R/W R/W R/W R/W R/W R R R/W R/W POR 0 0 0 0 0 0 1 1 Bit7~5 CKS2~CKS0:ThesystemclockselectionwhenHLCLKis“0” 000:fSUB(fLXTorfLIRC) 001:fSUB(fLXTorfLIRC) 010:fH/64 011:fH/32 100:fH/16 101:fH/8 110:fH/4 111:fH/2 Thesethreebitsareusedtoselectwhichclockisusedasthesystemclocksource.In additiontothesystemclocksource,whichcanbeeithertheLXTorLIRC,adivided versionofthehighspeedsystemoscillatorcanalsobechosenasthesystemclock source. Bit4 FSTEN:FastWake-upControl(onlyforHXT) 0:Disable 1:Enable ThisistheFastWake-upControlbitwhichdeterminesifthefSUBclocksourceis initiallyusedafterthedevicewakesup.Whenthebitishigh,thefSUBclocksourcecan beusedasatemporarysystemclocktoprovideafasterwakeuptimeasthefSUBclock isavailable. Bit3 LTO:Lowspeedsystemoscillatorreadyflag 0:Notready 1:Ready Thisisthelowspeedsystemoscillatorreadyflagwhichindicateswhenthelowspeed systemoscillatorisstableafterpoweronresetorawake-uphasoccurred.Theflag willbelowwhenintheSLEEP0Modebutafterawake-uphasoccurred,theflagwill changetoahighlevelafter1024clockcyclesiftheLXToscillatorisusedand1~2 clockcyclesiftheLIRCoscillatorisused. |
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