HT67F488 datasheet(81/171 Pages) HOLTEK

81 / 171 page

Rev. 1.60

�ove��e� �� 016

HT67F488/HT67F489

TinyPowerTM A/D Flash MCU with LCD & EEPROM

Compact Type TM – CTM

AlthoughthesimplestformofthethreeTMtypes,theCompactTMtypestillcontainsthree

operatingmodes,whichareCompareMatchOutput,Timer/EventCounterandPWMOutputmodes.

TheCompactTMcanalsobecontrolledwithanexternalinputpinandcandriveoneexternaloutput

pin.

Name

TM No.

TM Input Pin

TM Output Pin

10-�it CTM

1� �� 3

TCK1� TCK�� TCK3

TP1� TP�� TP3

Compact TM Operation

Atitscoreisa10-bitcount-upcounterwhichisdrivenbyauserselectableinternalorexternalclock

source.Therearealsotwointernalcomparatorswiththenames,ComparatorAandComparator

P.ThesecomparatorswillcomparethevalueinthecounterwithCCRPandCCRAregisters.The

CCRPisthreebitswidewhosevalueiscomparedwiththehighestthreebitsinthecounterwhilethe

CCRAisthetenbitsandthereforecompareswithallcounterbits.

Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogram,isto

clearthecounterbychangingtheTnONbitfromlowtohigh.Thecounterwillalsobecleared

automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators.

Whentheseconditionsoccur,aTMinterruptsignalwillalsousuallybegenerated.TheCompact

TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock

sourcesincludinganinputpinandcanalsocontrolanoutputpin.Alloperatingsetupconditionsare

selectedusingrelevantinternalregisters.

CCRP

CCRA

Tn CC LR

Co mp ar at or P M at ch

Co mp ar at or A Ma tc h

Tn CK 2~ Tn CK 0

Tn ON

Tn PAU

b7 ~b 9

3 -b it C om par at or P

TC Kn

10 - bi t Co m par at or A

Co unt er C le ar

10 -b it C ount -u p Co unt er

Tn PF I nt e rru pt

Tn AF I nt e rru pt

TP n Pi n

Ou tp u t

b0 ~b 9

Tn M1 , Tn M0

Tn IO 1, T nI O0

Tn PO L

Tn OC

Po la ri ty

Co nt ro l

Ou tp u t

Co nt ro l

TP n

11 1

00 0

00 1

01 0

01 1

10 0

10 1

11 0

f SYS /4

f H

f H /1 6

f H /6 4

f TB C

Compact Type TM Block Digram (n=1~3)

HT67F488 Datasheet(PDF) 81 Page - Holtek Semiconductor Inc

HT67F488 Datasheet(HTML) 81 Page - Holtek Semiconductor Inc

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