HT69F240 datasheet(67/172 Pages) HOLTEK

67 / 172 page

Rev. 1.20

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Rev. 1.20

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HT69F240

I/O 8-Bit Flash MCU with LED/LCD Driver

HT69F240

I/O 8-Bit Flash MCU with LED/LCD Driver

Compact Type TM – CTM

AlthoughthesimplestformofthethreeTMtypes,theCompactTMtypestillcontainsthree

operatingmodes,whichareCompareMatchOutput,Timer/EventCounterandPWMOutputmodes.

TheCompactTMcanalsobecontrolledwithanexternalinputpinandcandriveoneexternaloutput

pins.

TM Type

TM Input Pin TM Output Pin

10-bit CT�

CTCK

CTP

CCR P

CCR A

CT CCL R

Co m par at or P M at ch

Co m par at or A Ma tc h

CT CK 2~ CT CK 0

CT ON

CT PA U

b7~ b9

3 -b it C om par at or P

CT CK

10 -b it C om par at or A

C oun te r Cl ear

10- bi t C oun t- up C oun te r

CT MP F In te rr upt

CT MA F In te rr upt

CT P Pi n

Ou tp ut

b0~ b9

CT M1 , C TM 0

CT IO 1, C TI O0

CT PO L

CT OC

Po la ri ty

Co n tr ol

Ou tp ut

Co n tr ol

CT P

111

000

001

010

011

100

101

110

f SYS /4

f SYS

f H /1 6

f H /6 4

f SU B

Compact Type TM Block Diagram (n=0)

Compact TM Operation

Atitscoreisa10-bitcount-upcounterwhichisdrivenbyauserselectableinternalorexternalclock

source.Therearealsotwointernalcomparatorswiththenames,ComparatorAandComparator

P.ThesecomparatorswillcomparethevalueinthecounterwithCCRPandCCRAregisters.The

CCRPisthreebitswidewhosevalueiscomparedwiththehighestthreebitsinthecounterwhilethe

CCRAisthetenbitsandthereforecompareswithallcounterbits.

Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogram,isto

clearthecounterbychangingtheCTONbitfromlowtohigh.Thecounterwillalsobecleared

automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators.

Whentheseconditionsoccur,aTMinterruptsignalwillalsousuallybegenerated.TheCompact

TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock

sourcesincludinganinputpinandcanalsocontrolanoutputpin.Alloperatingsetupconditionsare

selectedusingrelevantinternalregisters.

HT69F240 Datasheet(PDF) 67 Page - Holtek Semiconductor Inc

HT69F240 Datasheet(HTML) 67 Page - Holtek Semiconductor Inc

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