Holtek HT66F30 - Standard Type TM - STM; Standard TM Operation

Rev. 2.50 122 June 22, 2017 Rev. 2.50 123 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
Standard Type TM – STM
TheStandardTypeTMcontainsveoperatingmodes,whichareCompareMatchOutput,Timer/
EventCounter,CaptureInput,SinglePulseOutputandPWMOutputmodes.TheStandardTMcan
alsobecontrolledwithanexternalinputpinandcandrivetwoexternaloutputpins.
STM Name TM No. TM Input Pin TM Output Pin
HT66F20
10-bit STM 1 TCK1 TP1_0, TP1_1
HT66F30 — — — —
HT66F40
16-bit STM 2 TCK2 TP2_0, TP2_1
HT66F50 16-bit STM 2 TCK2 TP2_0, TP2_1
HT66F60 16-bit STM 2 TCK2 TP2_0, TP2_1



  
  



 
  
 

  
     
  
  

  


 
 
  

  


 
 
 
 


 














 


 


 


Standard Type TM Block Diagram
Standard TM Operation
TherearetwosizesofStandardTMs,oneis10-bitswideandtheotheris16-bitswide.Atthecoreis
a10or16-bitcount-upcounterwhichisdrivenbyauserselectableinternalorexternalclocksource.
Therearealsotwointernalcomparatorswiththenames,ComparatorAandComparatorP.These
comparatorswillcomparethevalueinthecounterwithCCRPandCCRAregisters.TheCCRP
comparatoris3or8-bitswidewhosevalueiscomparedthewithhighest3or8bitsinthecounter
whiletheCCRAisthetenorsixteenbitsandthereforecomparesallcounterbits.
Theonlywayofchangingthevalueofthe10or16-bitcounterusingtheapplicationprogram,is
toclearthecounterbychangingtheTnONbitfromlowtohigh.Thecounterwillalsobecleared
automaticallybyacounteroveroworacomparematchwithoneofitsassociatedcomparators.
Whentheseconditionsoccur,aTMinterruptsignalwillalsousuallybegenerated.TheStandard
TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock
sourcesincludinganinputpinandcanalsocontrolanoutputpin.Alloperatingsetupconditionsare
selectedusingrelevantinternalregisters.