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HT66F019 Datasheet(PDF) 45 Page - Holtek Semiconductor Inc

Part # HT66F019
Description  A/D Flash MCU with EEPROM
PDF  175 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F019 Datasheet(HTML) 45 Page - Holtek Semiconductor Inc

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Rev. 1.00
44
De�e��e� 01� �01�
Rev. 1.00
45
De�e��e� 01� �01�
HT66F019
A/D Flash MCU with EEPROM
HT66F019
A/D Flash MCU with EEPROM
FAST Mode to SLOW Mode Switching
WhenrunningintheFASTMode,whichusesthehighspeedsystemoscillator,andtherefore
consumesmorepower,thesystemclockcanswitchtorunintheSLOWModebysettheHLCLKbit
to"0"andsettheCKS2~CKS0bitsto"000"or"001"intheSMODregister.Thiswillthenusethe
lowspeedsystemoscillatorwhichwillconsumelesspower.Usersmaydecidetodothisforcertain
operationswhichdonotrequirehighperformanceandcansubsequentlyreducepowerconsumption.
TheSLOWModeissourcedfromtheLXTortheLIRCoscillatorsandthereforerequiresthese
oscillatorstobestablebeforefullmodeswitchingoccurs.ThisismonitoredusingtheLTObitinthe
SMODregister.
FAST Mode
SLOW Mode
CKS�~CKS0=00xB &
HLCK=0
SLEEP0 Mode
IDLEN=0
HALT inst�u�tion is exe�uted
SLEEP1 Mode
IDLEN=0
HALT inst�u�tion is exe�uted
IDLE0 Mode
IDLEN=1� FSYSON=0
HALT inst�u�tion is exe�uted
IDLE1 Mode
IDLEN=1� FSYSON=1
HALT inst�u�tion is exe�uted
WDT and LVD a�e all off
WDT is on



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