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HT45F5Q датащи(PDF) 36 Page - Holtek Semiconductor Inc |
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HT45F5Q датащи(HTML) 36 Page - Holtek Semiconductor Inc |
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36 / 114 page ![]() Rev. 1.10 �� De�e��e� 1�� �01� Rev. 1.10 �7 De�e��e� 1�� �01� HT45F5Q Charger Flash MCU HT45F5Q Charger Flash MCU System Operation Modes Therearesixdifferentmodesofoperationforthemicrocontroller,eachonewithitsown specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe microcontroller,theNORMALModeandSLOWMode.Theremainingfourmodes,theSLEEP0, SLEEP1,IDLE0andIDLE1modesareusedwhenthemicrocontrollerCPUisswitchedoffto conservepower. Operating Mode Description CPU fSYS fLIRC fTBC NORMAL �ode On fH~fH/�4 On On SLOW �ode On fL On On IDLE0 �ode Off Off On On IDLE1 �ode Off On On On SLEEP0 �ode Off Off Off Off SLEEP1 �ode Off Off On Off NORMAL Mode Asthenamesuggeststhisisoneofthemainoperatingmodeswherethemicrocontrollerhasall ofitsfunctionsoperationalandwherethesystemclockisprovidedthehighspeedoscillator.This modeoperatesallowingthemicrocontrollertooperatenormallywithaclocksourcewillcomefrom thehighspeedoscillatorHIRC.Thehighspeedoscillatorwillhoweverfirstbedividedbyaratio rangingfrom1to64,theactualratiobeingselectedbytheCKS2~CKS0andHLCLKbitsinthe SMODregister.Althoughahighspeedoscillatorisused,runningthemicrocontrolleratadivided clockratioreducestheoperatingcurrent. SLOW Mode Thisisalsoamodewherethemicrocontrolleroperatesnormallyalthoughnowwithaslower speedclocksource.TheclocksourceusedwillbefromthelowspeedoscillatorLIRC.Running themicrocontrollerinthismodeallowsittorunwithmuchloweroperatingcurrents.IntheSLOW Mode,thefHisoff. SLEEP0 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterislow.IntheSLEEP0modetheCPUwillbestopped,andthefLIRCclockwillbe stoppedtoo,andtheWatchdogTimerfunctionisdisabled. SLEEP1 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterislow.IntheSLEEP1modetheCPUwillbestopped.HoweverthefLIRCclockswill continuetooperateiftheWatchdogTimerfunctionisenabled. IDLE0 Mode TheIDLE0ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterishighandtheFSYSONbitintheSMOD1registerislow.IntheIDLE0Modethe systemoscillatorwillbeinhibitedfromdrivingtheCPUbutsomeperipheralfunctionswillremain operationalsuchastheWatchdogTimerandTM.IntheIDLE0Mode,thesystemoscillatorwillbe stopped. |
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