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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45FM2C датащи(PDF) 41 Page - Holtek Semiconductor Inc |
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HT45FM2C датащи(HTML) 41 Page - Holtek Semiconductor Inc |
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41 / 171 page  Rev. 1.10 40 �a� �0� �01� Rev. 1.10 41 �a� �0� �01� HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU Preliminar� Bit 0 HLCLK: Systemclockselection 0: fH/2~fH/64orfL 1: fH ThisbitisusedtoselectifthefHclockorthefH/2~fH/64orfLclockisusedasthe systemclock.WhenthebitishighthefHclockwillbeselectedandiflowthe fH/2~fH/64orfLclockwillbeselected.WhensystemclockswitchesfromthefHclock tothefLclockandthefHclockwillbeautomaticallyswitchedofftoconservepower. Fast Wake-up TominimisepowerconsumptionthisdevicecanentertheSLEEPorIDLE0Mode,wherethesystem clocksourcetothisdevicewillbestopped.Howeverwhenthisdeviceiswokenupagain,itcantake aconsiderabletimefortheoriginalsystemoscillatortorestart,stabiliseandallownormaloperation toresume.ToensurethedeviceisupandrunningasfastaspossibleaFastWake-upfunctionis provided,whichallowsfSUB,namelytheLIRCoscillator,toactasatemporaryclocktofirstdrivethe systemuntiltheoriginalsystemoscillatorhasstabilised.AstheclocksourcefortheFastWake-up functionisfSUB,theFastWake-upfunctionisonlyavailableintheSLEEPandIDLE0modes.The FastWake-upenable/disablefunctioniscontrolledusingtheFSTENbitintheSMODregister. IftheHIRCoscillatororLIRCoscillatorisusedasthesystemoscillatorthenitwilltake15~16 clockcyclesoftheHIRCor1~2cyclesoftheLIRCtowakeupthesystemfromtheSLEEPor IDLE0Mode.TheFastWake-upbit,FSTENwillhavenoeffectinthesecases. System Oscillator FSTEN Bit Wake-up Time (SLEEP Mode) Wake-up Time (IDLE0 Mode) Wake-up Time (IDLE1 Mode) HIRC x 15~16 HIRC c�cles 1~� HIRC c�cles LIRC x 1~� LIRC c�cles 1~� LIRC c�cles Wake-Up Times |
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