Holtek BS82B12A-3 - Periodic Type TM - PTM0

Rev. 1.20 84 January 23, 2015 Rev. 1.20 85 January 23, 2015
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
Periodic Type TM – PTM0
ThePeriodicTypeTMcontainsveoperatingmodes,whichareCompareMatchOutput,Timer/
EventCounter,CaptureInput,SinglePulseOutputandPWMOutputmodes.ThePeriodicTMcan
becontrolledwithoneexternalinputpinandcandrivetwoexternaloutputpins.


 
  
  
 
 
 




  
    
  
  

  

 
 
  
  
  

 
 
  
 
  

 












   


 


 




 
  

Periodic Type TM Block Diagram
Periodic TM Operation
Atthecoreisa10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10-bitwide.
Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogram,isto
clearthecounterbychangingthePT0ON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PTM0interruptsignalwillalsousuallybegenerated.ThePeriodic
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morethanoneoutputpin.Alloperatingsetup
conditionsareselectedusingrelevantinternalregisters.