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HT67F5630 Datasheet(PDF) 41 Page - Holtek Semiconductor Inc |
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HT67F5630 Datasheet(HTML) 41 Page - Holtek Semiconductor Inc |
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41 / 147 page  Rev. 1.20 �0 De�e��e� 1�� 201� Rev. 1.20 �1 De�e��e� 1�� 201� HT67F5630 TinyPowerTM 24-Bit Delta Sigma A/D Flash MCU with LCD & EEPROM HT67F5630 TinyPowerTM 24-Bit Delta Sigma A/D Flash MCU with LCD & EEPROM 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/�� 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.Theclocksourceusedwillbefromthelowspeedoscillator,LIRC.Runningthe microcontrollerinthismodeallowsittorunwithmuchloweroperatingcurrents.IntheSLOW Mode,thefHisoff. SLEEP0 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitinthe SMODregisterislow.IntheSLEEP0modetheCPUwillbestopped,andthefSUBandfSclocks willbestoppedtoo,andtheWatchdogTimerfunctionisdisabled.Inthismode,theLVDENismust clearedtozero.IftheLVDENissethigh,itwon’tentertheSLEEP0Mode. SLEEP1 Mode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterislow.IntheSLEEP1modetheCPUwillbestopped.HoweverthefSUBandfS clockswillcontinuetooperateiftheLVDENis“1”ortheWatchdogTimerfunctionisenabledand ifitsclocksourceischosenviaconfigurationoptiontocomefromthefSUB. |
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