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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F4MA датащи(PDF) 41 Page - Holtek Semiconductor Inc |
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HT45F4MA датащи(HTML) 41 Page - Holtek Semiconductor Inc |
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41 / 145 page  Rev. 1.20 �0 De�e��e� 1�� 201� Rev. 1.20 �1 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU NO RM AL f SYS =f H ~f H /6 4 f H o n CP U ru n f SYS o n f TB C o n f SU B o n ID LE 1 HA LT i ns tr uc ti on i s ex ec ut ed CP U st op ID LE N= 1 FS YS ON =1 f SYS o n f TB C o n f SU B o n ID LE 0 HA LT i ns tr uc ti on i s ex ec ut ed CP U st op ID LE N= 1 FS YS ON =0 f SYS o ff f TB C o n f SU B o n SL OW f SYS =f L f L o n CP U ru n f SYS o n f TB C o n f SU B o n f H o ff SL EE P HA LT i ns tr uc ti on i s ex ec ut ed f SYS o ff CP U st op ID LE N= 0 f TB C o ff f SU B o n Operating Mode Switching Thedevicecanswitchbetweenoperatingmodesdynamicallyallowingtheusertoselectthebest performance/powerratioforthepresenttaskinhand.Inthiswaymicrocontrolleroperationsthat donotrequirehighperformancecanbeexecutedusingslowerclocksthusrequiringlessoperating currentandprolongingbatterylifeinportableapplications. Insimpleterms,ModeSwitchingbetweentheNORMALModeandSLOWModeisexecutedusingthe HLCLKbitandCKS2~CKS0bitsintheSMODregisterwhileModeSwitchingfromtheNORMAL/ SLOWModestotheSLEEP/IDLEModesisexecutedviatheHALTinstruction.WhenaHALT instructionisexecuted,whetherthedeviceenterstheIDLEModeortheSLEEPModeisdeterminedby theconditionoftheIDLENbitintheSMODregisterandFSYSONintheCTRLregister. WhentheHLCLKbitswitchestoalowlevel,whichimpliesthatclocksourceisswitchedfromthe highspeedclocksource,fH,totheclocksource,fH/2~fH/64orfSUB.IftheclockisfromthefSUB,the highspeedclocksourcewillstoprunningtoconservepower.Whenthishappensitmustbenoted thatthefH/16andfH/64internalclocksourceswillalsostoprunning,whichmayaffecttheoperation ofotherinternalfunctionssuchastheTMs.Theaccompanyingflowchartshowswhathappenswhen thedevicemovesbetweenthevariousoperatingmodes. |
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