DHT12 datasheet(5/14 Pages) ETC1

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图 2：25 ℃时 DHT12 Relative humidity maximum error 图 3: Temperature sensor temperature Max

errors

Six, electrical characteristics

Electrical characteristics, such as energy consumption, high and low level input and output

voltage, depending on the power supply. Table 3 Details DHT12 The electrical characteristics,

without marking, it means that the power supply voltage is 12V。

表 3： DHT12 DC characteristics.

Seven, interface definition

7.1 DHT12 Pin assignments

表 4

： DHT12 Pin assignments

图 4：DHT12Wiring diagram

7.2 Power supply pins (VDD GND）

DHT12 The supply voltage range 2.7V - 5.5V。

7.3

Serial clock input (SCL）

SCL Pins are used for selection of the means of communication and I2C Communication

clock line. Dang SCL After power remained low, indicating that the user select a single bus

低电平输出电流。

表示上接电阻。

The

name

描述

VDD

Power supply (2.7V-5.5V)

SDA

Serial data, bi-directional

GND

地

SCL

Serial clock input(Single bus grounding)

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