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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F2020 датащи(PDF) 25 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 25 Page - Holtek Semiconductor Inc |
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25 / 85 page  Rev. 1.00 24 April 11, 2017 Rev. 1.00 25 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HIRCEN Prescaler High Speed Oscillator Low Speed Oscillator fH/2 fH/16 fH/64 fH/8 fH/4 fH/32 CKS2~CKS0 fSYS fSUB fSUB LIRC fLIRC fLIRC HIRC fH WDT fSYS/4 Time Base fSUB fSYS Prescaler CLKSEL[1:0] fPSC IDLE0 SLEEP IDLE2 SLEEP TB[2:0] Device Clock Configurations Note:WhenthesystemclocksourcefSYSisswitchedtofSUBfromfH,thehighspeedoscillatorcanbestoppedto conservethepowerorcontinuetooscillatetoprovidetheclocksource,fH~fH/64,forperipheralcircuitto use,whichisdeterminedbyconfiguringthecorrespondinghighspeedoscillatorenablecontrolbit. System Operation Modes Therearesixdifferentmodesofoperationforthemicrocontroller,eachonewithitsown specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe microcontroller,theNORMALModeandSLOWMode.Theremainingfourmodes,theSLEEP, IDLE0,IDLE1andIDLE2ModeareusedwhenthemicrocontrollerCPUisswitchedofftoconserve power. Operation Mode CPU Related Register value fSYS fH fSUB fLIRC FHIDEN FSIDEN CKS[2:0] NORMAL Mode On x x 000~110 On On On On SLOW Mode On x x 111 On On/Off(1) On On IDLE0 Mode Off 0 1 000~110 Off Off On On 111 On IDLE1 Mode Off 1 1 xxx On On On On IDLE2 Mode Off 1 0 000~110 On On Off On 111 Off SLEEP Mode Off 0 0 xxx Off Off Off On/Off(2) “x”: Don’t care Note:1.ThefHclockwillbeswitchedonoroffbyconfiguringthecorrespondingoscillatorenablebitinthe SLOWmode. 2.ThefLIRCclockcanbeswitchedonoroffwhichiscontrolledbytheWDTfunctionbeingenabledor disabledintheSLEEPmode. |
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