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1~8

P1_0~P0_7

Input or output terminal, push-pull structure, input as default.

輸入或輸出（推挽結(jié)構(gòu)），默認(rèn)輸入。

9

GND

Ground. 地

10~17

P1_0~P1_7

Input or output terminal, push-pull structure, input as default.

輸入或輸出（推挽結(jié)構(gòu)），默認(rèn)輸入。

18

AD0

I²C device address, connect to VCC or GND。

I²C器件地址選擇，接VCC或GND。

19

SCL

I²C serial clock. I²C時(shí)鐘

20

SDA

I²C serial data. I²C數(shù)據(jù)

21

VCC

Power supply. 電源輸入端.

22

INTN

Interrupt output pin, open-drain, need external pull-up resistor; active low.

中斷輸出，開漏結(jié)構(gòu)，需外部上拉電阻；低有效

23

AD1

I²C device address, connect to VCC or GND。

I²C器件地址選擇，接VCC或GND。

24

AD2 (HTR3355, HTR3335)

RSTN (HTR3339)

AD2: I²C device address, connect to VCC or GND。

AD2: I²C器件地址選擇，接VCC或GND。

RSTN: Hardware reset pin, active low.

RSTN: 硬件復(fù)位，低為復(fù)位

EP

GND

Provides both electrical and thermal connection from the device to the board. Connect to the system ground. 接地。