Holtek HT66F0175 - Periodic Type TM - PTM; Periodic TM Operation

Rev. 1.50 102 August 28, 2017 Rev. 1.50 103 August 28, 2017
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
Periodic Type TM – PTM
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
alsobecontrolledwithoneexternalinputpinandcandriveoneexternaloutputpin.
Device TM Core TM No. TM Input Pin TM Output Pin
HT66F0175 10-bit PTM TM0, TM1 TCK0, TCK1 TP0, TP1
HT66F0185 10-bit PTM TM1 TCK1 TP1
f
SYS
f
SYS
/4
f
H
/64
f
H
/16
f
TBC
TCKn
000
001
010
011
100
101
110
111
TnCK2~TnCK0
10-bit Count-up Counter
10-bit Comparator P
CCRP
b0~b9
b0~b9
10-bit Comparator A
TnON
TnPAU
Comparator A Match
Comparator P Match
Counter Clear
0
1
Output
Control
Polarity
Control
Pin
Control
TPn
TnOC
TnM1, TnM0
TnIO1, TnIO0
TnAF Interrupt
TnPF Interrupt
TnPOL
TnCP
CCRA
TnCCLR
Edge
Detector
TnIO1, TnIO0
f
H
1
0
TnCAPTS
Periodic Type TM Block Diagram – n = 0 or 1
Periodic TM Operation
ThesizeofPeriodicTMis10-bitwideanditscoreisa10-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andCCRAcomparatorsare10-bitwidewhosevalueis
respectivelycomparedwithallcounterbits.
Theonlywayofchangingthevalueofthe10-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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theoutputpins.Alloperatingsetupconditions
areselectedusingrelevantinternalregisters.