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HT45F5R 데이터시트(PDF) 44 Page - Holtek Semiconductor Inc |
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HT45F5R 데이터시트(HTML) 44 Page - Holtek Semiconductor Inc |
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44 / 138 page ![]() Rev. 1.10 44 De�e��e� 1�� �01� Rev. 1.10 45 De�e��e� 1�� �01� HT45F5R Charger ASSP Flash MCU HT45F5R Charger ASSP Flash MCU SLOW Mode to NORMAL Mode Switching InSLOWmodethesystemclockisderivedfromfSUB.Whensystemclockisswitchedbacktothe NORMALmodefromfSUB,theCKS2~CKS0bitsshouldbesetto"000"~"110"andthenthesystem clockwillrespectivelybeswitchedtofH~fH/64. However,iffHisnotusedinSLOWmodeandthusswitchedoff,itwilltakesometimetore- oscillateandstabilisewhenswitchingtotheNORMALmodefromtheSLOWMode.Thisis monitoredusingtheHIRCFbitintheHIRCCregister.Thetimedurationrequiredforthehighspeed systemoscillatorstabilizationisspecifiedintheA.C.characteristics. NORMAL Mode SLOW Mode CKS�~CKS0 = 000~110 SLEEP Mode FHIDEN=0� FSIDEN=0 HALT inst�u�tion is exe�uted IDLE0 Mode FHIDEN=0� FSIDEN=1 HALT inst�u�tion is exe�uted IDLE1 Mode FHIDEN=1� FSIDEN=1 HALT inst�u�tion is exe�uted IDLE2 Mode FHIDEN=1� FSIDEN=0 HALT inst�u�tion is exe�uted Entering the SLEEP Mode ThereisonlyonewayforthedevicetoentertheSLEEPModeandthatistoexecutethe"HALT" instructionintheapplicationprogramwiththeFHIDENandFSIDENbitinSCCregisterequal to"0".Whenthisinstructionisexecutedundertheconditionsdescribedabove,thefollowingwill occur: • Thesystemclockwillbestoppedandtheapplicationprogramwillstopatthe"HALT" instruction. • TheDataMemorycontentsandregisterswillmaintaintheirpresentcondition. • TheI/Oportswillmaintaintheirpresentconditions. • Inthestatusregister,thePowerDownflagPDFwillbeset,andWDTtimeoutflagTOwillbe cleared. • TheWDTwillbeclearedandresumecountingastheWDTisenabled.IftheWDTisdisabled thenWDTwillbeclearedandstopped. |
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