 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
HT45FM2C Datasheet(PDF) 39 Page - Holtek Semiconductor Inc |
|
|
|||||||||||||||||||||||||||||
HT45FM2C Datasheet(HTML) 39 Page - Holtek Semiconductor Inc |
|
|
39 / 171 page  Rev. 1.10 �8 �a� �0� �01� Rev. 1.10 �9 �a� �0� �01� HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU Preliminar� System Operation Modes Therearefivedifferentmodesofoperationforthemicrocontroller,eachonewithitsown specialcharacteristicsandwhichcanbechosenaccordingtothespecificperformanceand powerrequirementsoftheapplication.Therearetwomodesallowingnormaloperationofthe microcontroller,theNORMALModeandSLOWMode.Theremainingthreemodes,theSLEEP, IDLE0andIDLE1ModeareusedwhenthemicrocontrollerCPUisswitchedofftoconservepower. Operation Mode Description CPU fSYS fSUB fS fTBC NOR�AL �ode On fH~fH/64 On On On SLOW �ode On fL On On On IDLE0 �ode Off Off On On On IDLE1 �ode Off On On On On SLEEP �ode Off Off On On On • NORMALMode Asthenamesuggeststhisisoneofthemainoperatingmodeswherethemicrocontrollerhasall ofitsfunctionsoperationalandwherethesystemclockisprovidedbythehighspeedoscillator. Thismodeoperatesallowingthemicrocontrollertooperatenormallywithaclocksourcewill comefromHIRCoscillator.Thehighspeedoscillatorwillhoweverfirstbedividedbyaratio rangingfrom1to64,theactualratiobeingselectedbytheCKS2~CKS0andHLCLKbitsinthe SMODregister.Althoughahighspeedoscillatorisused,runningthemicrocontrolleratadivided clockratioreducestheoperatingcurrent. • SLOWMode Thisisalsoamodewherethemicrocontrolleroperatesnormallyalthoughnowwithaslower speedclocksource.Theclocksourceusedwillbefromthelowspeedoscillator,LIRC.Running themicrocontrollerinthismodeallowsittorunwithmuchloweroperatingcurrents.Inthe SLOWMode,thefHisoff. • SLEEPMode TheSLEEPModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterislow.IntheSLEEPModetheCPUwillbestopped. • IDLE0Mode TheIDLE0ModeisenteredwhenaHALTinstructionisexecutedandwhentheIDLENbit intheSMODregisterishighandtheFSYSONbitintheCTRLregisterislow.IntheIDLE0 ModethesystemoscillatorwillbeinhibitedfromdrivingtheCPUbutsomeperipheralfunctions willremainoperationalsuchastheWatchdogTimerandTMs.IntheIDLE0Mode,thesystem oscillatorwillbestopped.IntheIDLE0ModetheWatchdogTimerclock,fS,willbealwayson. • IDLE1Mode TheIDLE1ModeisenteredwhenanHALTinstructionisexecutedandwhentheIDLENbitin theSMODregisterishighandtheFSYSONbitintheCTRLregisterishigh.IntheIDLE1Mode thesystemoscillatorwillbeinhibitedfromdrivingtheCPUbutmaycontinuetoprovideaclock sourcetokeepsomeperipheralfunctionsoperationalsuchastheWatchdogTimerandTMs.In theIDLE1Mode,thesystemoscillatorwillcontinuetorun,andthissystemoscillatormaybe highspeedorlowspeedsystemoscillator.IntheIDLE1ModetheWatchdogTimerclock,fS,will be on. |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
