HT45F77 datasheet(10/203 Pages) HOLTEK

10 / 203 page

Rev. 1.20

De�e��e� 1�� 201�

Rev. 1.20

De�e��e� 1�� 201�

HT45F77

Body Fat Scale Flash MCU

HT45F77

Body Fat Scale Flash MCU

Pin Description

Thefunctionofeachpinislistedinthefollowingtable,howeverthedetailsbehindhoweachpinis

configurediscontainedinothersectionsofthedatasheet.

Pin Name

Function

OPT

I/T

O/T Descriptions

PA0/ICPDA/

OCDSDA

PA0

PAPU

PAWU

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

ICPDA

—

ST CMOS ICP add�ess/data

OCDSDA

—

ST CMOS OCDS add�ess/data� fo� EV �hip only.

PA1/TP2_1/

INT1

PA1

PAPU

PAWU

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

TP2_1

CTRL0

PTM2C0 ST CMOS TM2 input/output

INT1

INTC0

—

Exte�nal Inte��upt 1 input

PA2/ICPCK/

OCDSCK

PA2

PAPU

PAWU

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

ICPCK

—

ICP �lo�k

OCDSCK

—

OCDS �lo�k� fo� EV �hip only.

PA3/TP2_0/

INT0

PA3

PAPU

PAWU

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

TP2_0

CTRL0

PTM2C0 ST CMOS TM2 input/output

INT0

INTC0

—

Exte�nal Inte��upt 0 input

PA�/TCK2

PA�

PAPU

PAWU

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

TCK2

PTM2C0 ST

—

TM2 �lo�k input

PA5/TP1_1/

SCK/SCL

PA5

PAPU

PAWU

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

TP1_1

CTRL0

PTM1C0 ST CMOS TM1 input/output

SCK

SIMC0

ST CMOS SPI se�ial �lo�k

SCL

SIMC0

ST CMOS I2C �lo�k line

PA�/TP1_0/

SCS

PA�

PAPU

PAWU

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

TP1_0

CTRL0

PTM1C0 ST CMOS TM1 input/output

SCS

SIMC0

ST CMOS SPI slave sele�t pin

PA7/TCK1/

SDO/SEG0

PA7

PAPU

PAWU

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

TCK1

PTM1C0 ST

—

TM1 �lo�k input

SDO

SIMC0

—

CMOS SPI se�ial data output

SEG0

LCD1

—

CMOS LCD Seg�ent output

PB0

PBPU

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

PB1/OSC1

PB1

PBPU

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

OSC1

HXT

—

HXT Os�illato� input

PB2/OSC2

PB2

PBPU

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

OSC2

—

HXT HXT Os�illato� output

PB3/XT1

PB3

PBPU

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

XT1

LXT

—

LXT Os�illato� input

PB�/XT2

PB�

PBPU

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

XT2

—

LXT LXT Os�illato� output

HT45F77 Datasheet(PDF) 10 Page - Holtek Semiconductor Inc

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