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HT67F5652 bảng dữ liệu(PDF) 53 Page - Holtek Semiconductor Inc |
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HT67F5652 bảng dữ liệu(HTML) 53 Page - Holtek Semiconductor Inc |
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53 / 224 page  Rev. 1.00 5� De�e��e� 0�� �01� Rev. 1.00 53 De�e��e� 0�� �01� HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU HT67F5652 24-Bit Delta Sigma A/D + LCD Flash MCU System Operation Modes Therearesixdifferentmodesofoperationforthemicrocontroller,eachonewithitsown specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe microcontroller,theNORMALModeandSLOWMode.Theremainingfourmodes,theSLEEP0, SLEEP1,IDLE0andIDLE1ModeareusedwhenthemicrocontrollerCPUisswitchedoffto conservepower. Operating Mode Description CPU fSYS fSUB fS NORMAL Mode on fH~fH/�4 on on SLOW Mode on fSUB on on IDLE0 Mode off off on on/off IDLE1 Mode off on on on SLEEP0 Mode off off off off SLEEP1 Mode off off on on NORMAL Mode Asthenamesuggeststhisisoneofthemainoperatingmodeswherethemicrocontrollerhasallof itsfunctionsoperationalandwherethesystemclockisprovidedbyoneofthehighspeedoscillators. Thismodeoperatesallowingthemicrocontrollertooperatenormallywithaclocksourcewillcome fromoneofthehighspeedoscillators,eithertheHXTorHIRCoscillators.Thehighspeedoscillator willhoweverfirstbedividedbyaratiorangingfrom1to64,theactualratiobeingselectedbythe CKS2~CKS0andHLCLKbitsintheSMODregister.Althoughahighspeedoscillatorisused, runningthemicrocontrolleratadividedclockratioreducestheoperatingcurrent. SLOW Mode Thisisalsoamodewherethemicrocontrolleroperatesnormallyalthoughnowwithaslowerspeed clocksource.Theclocksourceusedwillbefromoneofthelowspeedoscillators,eithertheLXT ortheLIRC.Runningthemicrocontrollerinthismodeallowsittorunwithmuchloweroperating currents.IntheSLOWMode,thefHisoff. SLEEP0 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterislow.IntheSLEEP0modetheCPUwillbestopped,andthefSUBandfSclocks willbestoppedtoo,andtheWatchdogTimerfunctionisdisabled.Inthismode,theLVDENis mustclearedtozero.IftheLVDENissethigh,itwon'tentertheSLEEP0Mode.Inthismode,the ENLCDismustclearedtozero.IftheENLCDissethigh,itwon'tentertheSLEEP0Mode. SLEEP1 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterislow.IntheSLEEP1modetheCPUwillbestopped.HoweverthefSUBandfS clockswillcontinuetooperateiftheLVDENis"1"ortheENLCDis"1"ortheWatchdogTimer functionisenabledandifitsclocksourceischosenviaconfigurationoptiontocomefromthefSUB. |
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