HT45FH4J datasheet(9/129 Pages) HOLTEK

9 / 129 page

Rev. 1.10

De�e��e� 1�� 01�

Rev. 1.10

De�e��e� 1�� 01�

HT45FH4J

Emergency Light Flash MCU

HT45FH4J

Emergency Light Flash MCU

Pin Descriptions

Withtheexceptionofthepowerpinsandsomerelevanttransformercontrolpins,allpinsonthis

devicecanbereferencedbytheirPortname,e.g.PA0,PA1etc,whichrefertothedigitalI/O

functionofthepins.HoweverthesePortpinsarealsosharedwithotherfunctionsuchastheAnalog

toDigitalConverter,TimerModulepinsetc.Thefunctionofeachpinislistedinthefollowingtable,

howeverthedetailsbehindhoweachpinisconfigurediscontainedinothersectionsofthedatasheet.

AsthePinDescriptiontableshowsthesituationforthepackagewiththemostpins,notallpinsin

thetablewillbeavailableonsmallerpackagesizes.

Pin Name

Function

OPT

I/T

O/T

Description

PA0/ICPDA/

OCDSDA

PA0

PAPU

PAWU

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

ICPDA

—

CMOS In-�i��uit p�og�a��ing data/add�ess pin

OCDSDA

—

CMOS On-�hip de�ug suppo�t data/add�ess pin� only fo� EV

PA1/AN0/TP0

PA1

PAPU

PAWU

CTRL3

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

AN0

CTRL3

—

A/D Conve�te� input 0

TP0

CTRL3

CMOS TM0 I/O

PA�/ICPCK/

OCDSCK

PA�

PAPU

PAWU

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

ICPCK

—

In-�i��uit p�og�a��ing �lo�k pin

OCDSCK

—

On-�hip de�ug suppo�t �lo�k pin� only fo� EV IC

PA3/AN1/VREF/

INT0/TCK0

PA3

PAPU

PAWU

CTRL3

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

AN1

CTRL3

—

A/D Conve�te� input 1

VREF

CTRL3

—

A/D Conve�te� �efe�en�e voltage input

INT0

CTRL3

INTEG

INTC1

—

Exte�nal inte��upt 0

TCK0

CTRL3

TM0C0

—

TM0 �lo�k input

PA�/AN�/TP1

PA�

PAPU

PAWU

CTRL3

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

AN�

CTRL3

—

A/D Conve�te� input �

TP1

CTRL3

CMOS TM1 I/O

PA5/AN3/OCP1/

INT1/TCK1

PA5

PAPU

PAWU

CTRL3

CMOS Gene�al pu�pose I/O. Registe� ena�led pull-up and

wake-up.

AN3

CTRL3

—

A/D Conve�te� input 3

OCP1

CTRL3

—

Ove� �u��ent p�ote�tion input

INT1

CTRL3

INTEG

INTC1

—

Exte�nal inte��upt 1

TCK1

CTRL3

TM1C0

—

TM1 �lo�k input

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