HT66F24D datasheet(85/177 Pages) HOLTEK

85 / 177 page

A/D Flash Type 8-bit MCU with EEPROM

HT66F24D/HT66F25D

Rev. 1.00

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Rev. 1.00

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Standard Type TM – STM

TheStandardTypeTMcontainsfiveoperatingmodes,whichareCompareMatchOutput,Timer/

EventCounter,CaptureInput,SinglePulseOutputandPWMOutputmodes.TheStandardTMcan

alsobecontrolledwithanexternalinputpinandcandriveoneortwoexternaloutputpins.

STM

Name

TM No.

TM Input Pin

TM Output Pin

HT��F�4D

10-bit STM

TCK1

TP1_0� TP1_1�

TP1_�

HT��F�5D

—

Standard TM Operation

Atitscoreisa10-bitcount-upcounterwhichisdrivenbyauserselectableinternalorexternalclock

source.Therearealsotwointernalcomparatorswiththenames,ComparatorAandComparator

P.ThesecomparatorswillcomparethevalueinthecounterwithCCRPandCCRAregisters.The

CCRPisthreebitswidewhosevalueiscomparedwiththehighestthreebitsinthecounterwhilethe

CCRAisthetenbitsandthereforecompareswithallcounterbits.

Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogram,isto

clearthecounterbychangingtheTnONbitfromlowtohigh.Thecounterwillalsobecleared

automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators.

Whentheseconditionsoccur,aTMinterruptsignalwillalsousuallybegenerated.TheStandard

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- bi t Co m par at or P

10 -b it C om 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

I npu t/ Ou tp u t

b0 ~b 9

E dge

De te ct or

Tn IO 1, T nI O0

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_0

TP n_2

TC Kn

11 1

00 0

00 1

01 0

01 1

10 0

10 1

11 0

f SYS /4

f SYS

f H /1 6

f H /6 4

f TB C

Un der fi ned

TP n_1

Standard Type TM Block Diagram

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