Holtek HT66F30 - Page 258

Rev. 2.50 258 June 22, 2017 Rev. 2.50 259 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PCKcontrolbitissetto1toenablethePCKoutputastheclocksourcefortheUARTbaud
rategeneratorwithvariousPCKoutputfrequenciesdeterminedbythePCKP1andPCKP0bitsin
theSIMC0Register.

♦
PCKoutputfrequencyselectionbitsPCKP1~PCKP0intheSIMC0Register
Bit 3 2
Name
PCKP1 PCKP0
value 11,10,01,00
00:PCKoutputfrequencyisf
SYS
01:PCKoutputfrequencyisf
SYS
/4
10:PCKoutputfrequencyisf
SYS
/8
11:PCKoutputfrequencyisTM0CCRPmatchfrequency/2

♦
PCKoutputenablecontrolbitPCKENintheSIMC0Register
Bit 4
Name PCKEN
value 1
0:DisablePCKoutput
1:EnablePCKoutput
Aftertheabovesetupconditionshavebeenimplemented,theMCUcanenabletheSIMinterface
bysettingtheSIMENbithigh.TheMCUcanthenbegincommunicationwithexternalUART
connecteddevicesusingitsSPIinterface.ThedetailedMCUMasterSPIfunctionaldescriptionis
providedwithintheSerialInterfaceModulesectionoftheMCUdatasheet.
Application Circuit with UART Module



 
    
  

  



 
    
  








 
 














 




 
 
    
Note:*ItisrecommendedthatthiscomponentisaddedforaddedESDprotection.
**Itisrecommendedthatthiscomponentisaddedinenvironmentswherepowerlinenoiseissignicant.