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HT67F488 데이터시트(PDF) 48 Page - Holtek Semiconductor Inc

부품명 HT67F488
상세설명  TinyPowerTM A/D Flash MCU with LCD & EEPROM
PDF  171 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT67F488 데이터시트(HTML) 48 Page - Holtek Semiconductor Inc

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Rev. 1.60
48
�ove��e� ��� �016
HT67F488/HT67F489
TinyPowerTM A/D Flash MCU with LCD & EEPROM
Entering the SLEEP0 Mode
ThereisonlyonewayforthedevicetoentertheSLEEP0Modeandthatistoexecutethe“HALT”
instructionintheapplicationprogramwiththeIDLENbitinSMODregisterequalto“0”andthe
WDTandLVDbothoff.Whenthisinstructionisexecutedundertheconditionsdescribedabove,the
followingwilloccur:
• Thesystemclock,WDTclockandTimeBaseclockwillbestoppedandtheapplicationprogram
willstopatthe“HALT”instruction.
• TheDataMemorycontentsandregisterswillmaintaintheirpresentcondition.
• TheWDTwillbeclearedandstopped.
• TheI/Oportswillmaintaintheirpresentconditions.
• Inthestatusregister,thePowerDownflag,PDF,willbesetandtheWatchdogtime-outflag,TO,
willbecleared.
Entering the SLEEP1 Mode
ThereisonlyonewayforthedevicetoentertheSLEEP1Modeandthatistoexecutethe“HALT”
instructionintheapplicationprogramwiththeIDLENbitinSMODregisterequalto“0”andthe
WDTorLVDon.Whenthisinstructionisexecutedundertheconditionsdescribedabove,the
followingwilloccur:
• ThesystemclockandTimeBaseclockwillbestoppedandtheapplicationprogramwillstopat
the“HALT”instruction,buttheWDTorLVDwillremainwiththeclocksourcecomingfromthe
fSUBclock.
• TheDataMemorycontentsandregisterswillmaintaintheirpresentcondition.
• TheWDTwillbeclearedandresumecountingiftheWDTisenabled.
• TheI/Oportswillmaintaintheirpresentconditions.
• Inthestatusregister,thePowerDownflag,PDF,willbesetandtheWatchdogtime-outflag,TO,
willbecleared.
Entering the IDLE0 Mode
ThereisonlyonewayforthedevicetoentertheIDLE0Modeandthatistoexecutethe“HALT”
instructionintheapplicationprogramwiththeIDLENbitinSMODregisterequalto“1”andthe
FSYSONbitinCTRLregisterequalto“0”.Whenthisinstructionisexecutedundertheconditions
describedabove,thefollowingwilloccur:
• Thesystemclockwillbestoppedandtheapplicationprogramwillstopatthe“HALT”
instruction,buttheTimeBaseclockfTBCandfSUBclockwillbeon.
• TheDataMemorycontentsandregisterswillmaintaintheirpresentcondition.
• TheWDTwillbeclearedandresumecountingiftheWDTisenabled.
• TheI/Oportswillmaintaintheirpresentconditions.
• Inthestatusregister,thePowerDownflag,PDF,willbesetandtheWatchdogtime-outflag,TO,
willbecleared.
Entering the IDLE1 Mode
ThereisonlyonewayforthedevicetoentertheIDLE1Modeandthatistoexecutethe“HALT”
instructionintheapplicationprogramwiththeIDLENbitinSMODregisterequalto“1”andthe
FSYSONbitinCTRLregisterequalto“1”.Whenthisinstructionisexecutedundertheconditions
describedabove,thefollowingwilloccur:
• Thesystemclock,TimeBaseclockfTBCandfSUBclockwillbeonandtheapplicationprogram
willstopatthe“HALT”instruction.
• TheDataMemorycontentsandregisterswillmaintaintheirpresentcondition.



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