HT32F1253_12 datasheet(20/35 Pages) HOLTEK

20 / 35 page

Rev. 1.10

�0 of �5

��i� 1�� 01�

��-bit �RM Co�tex™-M� MCU

HT��F1�51/51B/5�/5�

Table 2. HT32F125x Pin Descriptions

Name

Pins

Type

(Note1)

Level

(Note2)

Description

LQFP

Default function

(AF0)

AF1

AF2

AF3

VSS�_�

G�ound �efe�ence fo� �DC and OP�/Com�a�ato�

P�0

�

I/O

GPIO P�0

�DC_IN0

GT1_ETI

GT0_CH�

P�1

�

I/O

GPIO P�1

�DC_IN1

GT0_CH�

P��

I/O

GPIO P��

�DC_IN�

UR_DCD

GT0_CH1

P��

I/O

GPIO P��

�DC_IN�

UR_DSR

GT0_CH0

P�4

I/O

GPIO P�4

�DC_IN4

UR_DTR

SPI_MOSI

P�5

I/O

GPIO P�5

�DC_IN5

UR_RI

SPI_MISO

P�6

I/O

GPIO P�6

�DC_IN6

UR_RTS/TXE

SPI_SCK

P�7

I/O

GPIO P�7

�DC_IN7

UR_CTS/SCK SPI_SEL

P�8

I/O

5V-T

GPIO P�8

UR_RX

P�9

I/O

5V-T

GPIO P�9-BOOT0

UR_TX

P�10

1�

I/O

5V-T

GPIO P�10-BOOT1

VLDOOUT

1�

LDO 1.8 V output. Please put a 10μF capacitor to GND in those pins

as c�ose as �ossib�e.

N.C

VLDOIN

LDO �.� V �owe� sou�ce� a�so connected to the �owe� switch of the

backu� domain.

VSSLDO

LDO g�ound �efe�ence

nRST

(Backu�

domain)

5V-T

Exte�na� �eset �in and exte�na� wakeu� �in in Powe�-Down mode

VB�T(note�) 18

VDD �.� V fo� backu� domain

PB8(note�) 19

I/O

(Backu�

domain)

XT�L��KIN

PB8

PB9(note�) �0

I/O

(Backu�

domain)

XT�L��KOUT

PB9

PB10

�1

I/O

(Backu�

domain)

5V-T

RTCOUT

PB10-

W�KEUP

GT0_ETI

PB11

��

I/O

5V-T

GPIO PB11

CKOUT

GT0_CH�

P�11

��

I/O

5V-T

GPIO P�11

I�C_SCL

P�1�

�4

I/O

5V-T

GPIO P�1�

I�C_SD�

P�1�

�5

I/O

5V-T

SWDIO

P�1�

GT0_CH�

P�14

�6

I/O

5V-T

SWCLK

P�14

GT0_CH1

P�15

�7

I/O

5V-T

TR�CESWO

P�15

GT0_CH0

VDD��_�

�8

�.� V vo�tage fo� digita� I/O

VSS��_�

�9

G�ound �efe�ence fo� digita� I/O

VSS��_�

�0

G�ound �efe�ence fo� digita� co�e

PB1�

�1

I/O

5V-T

GPIO PB1�

SPI_SEL

UR_DCD

GT1_CH�

HT32F1253 Datasheet(PDF) 20 Page - Holtek Semiconductor Inc

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