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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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HT66F002 bảng dữ liệu(PDF) 39 Page - Holtek Semiconductor Inc |
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HT66F002 bảng dữ liệu(HTML) 39 Page - Holtek Semiconductor Inc |
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39 / 144 page  Rev. 1.71 38 April 11, 2017 Rev. 1.71 39 April 11, 2017 HT66F002/HT66F0025/HT66F003/HT66F004 Cost-Effective A/D Flash MCU with EEPROM HT66F002/HT66F0025/HT66F003/HT66F004 Cost-Effective A/D Flash MCU with EEPROM HIRC Prescaler fH LIRC Low Speed Oscillation fH/2 fH/16 fH/64 fH/8 fH/4 fH/32 HLCLK CKS2~CKS0 bits fSYS fLIRC High Speed Oscillation WDT fSYS/4 fTB Time Base 0 Time Base 1 TBCK fL fTBC IDLEN System Clock Configurations Note:WhenthesystemclocksourcefSYSisswitchedtofLfromfH,thehighspeedoscillationwill stoptoconservethepower.ThusthereisnofH~fH/64forperipheralcircuittouse. System Operation Modes Therearesixdifferentmodesofoperationforthemicrocontroller,eachonewithitsown specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe microcontroller,theNORMALModeandSLOWMode.Theremainingfourmodes,theSLEEP0, SLEEP1,IDLE0andIDLE1modesareusedwhenthemicrocontrollerCPUisswitchedoffto conservepower. Operating Mode Description CPU fSYS fLIRC fTBC NORMAL mode On fH~fH/64 On On SLOW mode On fL On On IDLE0 mode Off Off On On IDLE1 mode Off On On On SLEEP0 mode Off Off Off Off SLEEP1 mode Off Off On Off NORMAL Mode Asthenamesuggeststhisisoneofthemainoperatingmodeswherethemicrocontrollerhasall ofitsfunctionsoperationalandwherethesystemclockisprovidedthehighspeedoscillator.This modeoperatesallowingthemicrocontrollertooperatenormallywithaclocksourcewillcomefrom thehighspeedoscillatorHIRC.Thehighspeedoscillatorwillhoweverfirstbedividedbyaratio rangingfrom1to64,theactualratiobeingselectedbytheCKS2~CKS0andHLCLKbitsinthe SMODregister.Althoughahighspeedoscillatorisused,runningthemicrocontrolleratadivided clockratioreducestheoperatingcurrent. |
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