Holtek HT66F30 User Manual

Rev. 2.50 62 June 22, 2017 Rev. 2.50 63 June 22, 2017
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
NORMAL Mode to SLOW Mode Switching
WhenrunningintheNORMALMode,whichusesthehighspeedsystemoscillator,andtherefore
consumesmorepower,thesystemclockcanswitchtorunintheSLOWModebysettheHLCLKbit
to"0"andsettheCKS2~CKS0bitsto"000"or"001"intheSMODregister.Thiswillthenusethe
lowspeedsystemoscillatorwhichwillconsumelesspower.Usersmaydecidetodothisforcertain
operationswhichdonotrequirehighperformanceandcansubsequentlyreducepowerconsumption.
TheSLOWModeissourcedfromtheLXTortheLIRCoscillatorsandthereforerequiresthese
oscillatorstobestablebeforefullmodeswitchingoccurs.ThisismonitoredusingtheLTObitinthe
SMODregister.
  
  
  
  
  
 
    


 
   
 
 
   
  

   
   

Holtek HT66F30 Specifications

General

Brand	Holtek
Model	HT66F30
Category	Computer Hardware
Language	English