HT45F56 datasheet(7/90 Pages) HOLTEK

7 / 90 page

Rev. 1.11

April 11, 2017

Rev. 1.11

April 11, 2017

HT45F56

Shock Detector Flash MCU

HT45F56

Shock Detector Flash MCU

Pin Descriptions

Withtheexceptionofthepowerpinsandsomerelevanttransformercontrolpins,allpinsonthese

devicescanbereferencedbytheirPortname,e.g.PA.0,PA.1etc,whichrefertothedigitalI/O

functionofthepins.HoweverthesePortpinsarealsosharedwithotherfunctionsuchastheAnalog

toDigitalConverter,TimerModulepinsetc.Thefunctionofeachpinislistedinthefollowingtable,

howeverthedetailsbehindhoweachpinisconfigurediscontainedinothersectionsofthedatasheet.

Pad Name

Function

OPT

I/T

O/T

Description

PA0/CTP/ICPDA

PA0

PAWU

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

CTP

PSEL

—

CMOS CTM output

ICPDA

—

CMOS ICP Data/Address pin

PA1/AD1

PA1

PAWU

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

AD1

PSEL

—

Threshold adjustment input

PA2/CTCK/ICPCK

PA2

PAWU

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

CTCK

—

CTM clock input

ICPCK

—

CMOS ICP Clock pin

PA5/SEN

PA5

PAWU

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

SEN

PSEL

—

Shock sensor analog input

PA6/AD2

PA6

PAWU

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

AD2

PSEL

—

Threshold adjustment input

PA7/RES

PA7

PAPU

PSEL

CMOS General purpose I/O. Register enabled pull-up and

wake-up.

RES

RSTC

—

External reset input

OCDSDA

—

CMOS OCDS Data/Address pin, for EV chip only.

OCDSCK

—

OCDS Clock pin, for EV chip only.

VDD

—

PWR

—

Positive power supply

VSS

—

PWR

—

Negative power supply, ground.

Legend: I/T:Inputtype

O/T:Outputtype

OPT:Optionalbyconfigurationoption(CO)orregisteroption

ST:SchmittTriggerinput

CMOS:CMOSoutput

AN:Analoginput

PWR:Power

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