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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F4N 데이터시트(PDF) 44 Page - Holtek Semiconductor Inc |
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HT45F4N 데이터시트(HTML) 44 Page - Holtek Semiconductor Inc |
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44 / 170 page  Rev. 1.30 �� De�e��e� 1�� �01� Rev. 1.30 �5 De�e��e� 1�� �01� HT45F4N/HT45FH4N Power Bank Flash MCU HT45F4N/HT45FH4N Power Bank Flash MCU NORMAL Mode Asthenamesuggeststhisisoneofthemainoperatingmodeswherethemicrocontrollerhasallof itsfunctionsoperationalandwherethesystemclockisprovidedbythehighspeedoscillator.This modeoperatesallowingthemicrocontrollertooperatenormallywithaclocksourcewillcomefrom thehighspeedoscillator,HIRC.Thehighspeedoscillatorwillhoweverfirstbedividedbyaratio rangingfrom1to64,theactualratiobeingselectedbytheCKS2~CKS0andHLCLKbitsinthe SMODregister.Althoughahighspeedoscillatorisused,runningthemicrocontrolleratadivided clockratioreducestheoperatingcurrent. SLOW Mode Thisisalsoamodewherethemicrocontrolleroperatesnormallyalthoughnowwithaslowerspeed clocksource.TheclocksourceusedwillbefromfL.Runningthemicrocontrollerinthismode allowsittorunwithmuchloweroperatingcurrents.IntheSLOWMode,thefHisoff. SLEEP Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterislow.IntheSLEEPmodetheCPUwillbestopped.HoweverthefSclockswill continuetooperateiftheLVDENis“1”ortheWatchdogTimerfunctionisenabled. IDLE0 Mode TheIDLE0ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterishighandtheFSYSONbitintheCTRLregisterislow.IntheIDLE0Modethe systemoscillatorwillbeinhibitedfromdrivingtheCPU,thesystemoscillatorwillbestopped,the lowfrequencyclockfLwillbeon. IDLE1 Mode TheIDLE1ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterishighandtheFSYSONbitintheCTRLregisterishigh.IntheIDLE1Modethe systemoscillatorwillbeinhibitedfromdrivingtheCPU,thesystemoscillatorwillcontinuetorun, andthissystemoscillatormaybehighspeedorlowspeedsystemoscillator.IntheIDLE1Modethe lowfrequencyclockfLwillbeon. Note:IfLVDEN=1andtheSLEEPorIDLEmodeisentered,theLVDandbandgapfunctionswill notbedisabled,andthefLclockwillbeforcedtoopen. |
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