поискавой системы для электроныых деталей |
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HT46R002 датащи(PDF) 24 Page - Holtek Semiconductor Inc |
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HT46R002 датащи(HTML) 24 Page - Holtek Semiconductor Inc |
24 / 83 page Rev. 1.21 24 April 11, 2017 Rev. 1.21 25 April 11, 2017 HT46R002/HT46R003 Cost-Effective A/D 8-Bit OTP MCU HT46R002/HT46R003 Cost-Effective A/D 8-Bit OTP MCU Wake-up AfterthesystementerstheSleepMode,itcanbewokenupfromoneofvarioussourceslistedas follows: • Anexternalreset • AnexternalfallingedgeonPortA • Asysteminterrupt • AWDToverflow Ifthesystemiswokenupbyanexternalreset,thedevicewillexperienceafullsystemreset, however,ifthedeviceiswokenupbyaWDToverflow,aWatchdogTimerresetwillbeinitiated. Althoughbothofthesewake-upmethodswillinitiatearesetoperation,theactualsourceofthe wake-upcanbedeterminedbyexaminingtheTOandPDFflags.ThePDFflagisclearedbya systempower-uporexecutingtheclearWatchdogTimerinstructionsandissetwhenexecutingthe “HALT”instruction.TheTOflagissetifaWDTtime-outoccurs,andcausesawake-upthatonly resetstheProgramCounterandStackPointer,theotherflagsremainintheiroriginalstatus. PinsPA0~PA2,PA5canbesetviathePAWUregistertopermitanegativetransitiononthepinto wake-upthesystem.WhenaPA0~PA2,PA5pinwake-upoccurs,theprogramwillresumeexecution attheinstructionfollowingthe“HALT”instruction. Ifthesystemiswokenupbyaninterrupt,thentwopossiblesituationsmayoccur.Thefirstiswhere therelatedinterruptisdisabledortheinterruptisenabledbutthestackisfull,inwhichcasethe programwillresumeexecutionattheinstructionfollowingthe“HALT”instruction.Inthissituation, theinterruptwhichwoke-upthedevicewillnotbeimmediatelyserviced,butwillratherbeserviced laterwhentherelatedinterruptisfinallyenabledorwhenastacklevelbecomesfree.Theother situationiswheretherelatedinterruptisenabledandthestackisnotfull,inwhichcasetheregular interruptresponsetakesplace.IfaninterruptrequestflagissethighbeforeenteringtheSLEEP Mode,thewake-upfunctionoftherelatedinterruptwillbeignored. Nomatterwhatthesourceofthewake-upeventis,onceawake-upeventoccurs,therewillbea timedelaybeforenormalprogramexecutionresumes.Consultthetablefortherelatedtime Wake-up Source Oscillator Type HIRC, LIRC External RES tRSTD + tSST PA Port tSST Interrupt WDT Overflow Note:1.tRSTD(resetdelaytime),tSYS(systemclock) 2.tRSTDispower-ondelay,typicaltime=50ms 3.tSST=16tSYS Wake-up Delay Time |
Аналогичный номер детали - HT46R002 |
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Аналогичное описание - HT46R002 |
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