Holtek HT66F002 User Manual

Rev. 1.71 42 April 11, 2017 Rev. 1.71 43 April 11, 2017
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective 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settingthe
HLCLKbitto“0”andsetting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LIRCoscillatorandthereforerequiresthisoscillatortobe
stablebeforefullmodeswitchingoccurs.ThisismonitoredusingtheLTObitintheSMODregister.
  
  
  
  
  
  
    

  
 
    
  
 
    
  
    
  
    

Holtek HT66F002 Specifications

General

Brand	Holtek
Model	HT66F002
Category	Control Unit
Language	English