Holtek HT66F30 - Page 186

Rev. 2.50 186 June 22, 2017 Rev. 2.50 187 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
ThestatusoftheSPIinterfacepinsisdeterminedbyanumberoffactorssuchaswhetherthedevice
isinthemasterorslavemodeandupontheconditionofcertaincontrolbitssuchasCSENand
SIMEN.
ThereareseveralconfigurationoptionsassociatedwiththeSPIinterface.Oneoftheseisto
enabletheSIMfunctionwhichselectstheSIMpinsratherthannormalI/Opins.Notethatifthe
congurationoptiondoesnotselecttheSIMfunctionthentheSIMENbitintheSIMC0registerwill
havenoeffect.AnothertwoSPIcongurationoptionsdetermineiftheCSENandWCOLbitsareto
beused.
 









SPI Master/Slave Connection
  



  


   


  
 

  
  

  




   


   

 
  
 
   
SPI Bolck Diagram