DS18B20温度传感器

中文字数:3793,中文页数:6  英文字数:2679页数:8

DS18B20 TEMPERATURE SENSOR
 FEATURES
 1．Unique 1-Wire® interface requires only one port pin for communication
 2. Each device has a unique 64-bit serial code stored in an onboard ROM
 3. Requires no external components
 4.Can be powered from data line. Power supply range is 3.0V to 5.5V
 5.Measures temperatures from –55°C to +125°C (–67°F to +257°F)
 6.Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
 7.Software compatible with the DS1822.
 8.Applications include thermostatic controls,industrial systems, consumer products,thermometers, or any thermally sensitive system
 PIN DESCRIPTION
 GND - Ground
 DQ - Data In/Out
 VDD - Power Supply Voltage
 DESCRIPTION
The DS18B20 Digital Thermometer provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data lin

DS18B20温度传感器
 特点:
 1 一线总线接口。
 2. 独特的64位ROM。
 3. 不要求外部组分。
 4.有寄生电源。要求电压范围是3.0V 到5.5V。
 5.测量温度从-55.C 到+125.C (热力学温度为-67.F 到+257.F)。
 6. 用户自定义 警报设置。
 7.软件与DS1822 兼容。
 8.应用于工业系统、温度计或任何热量测量系统。
 引脚说明:
 GND - 地面
 DQ - 数据外面
 VDD - 电源电压
 DS18B20智能温概述
 DS18B20数字温度传感器可以程序设定9-12位分辨率并有低触发报警功能。DS18B20持“一线总线”接口，测量温度范围为 -55°C～+125°C，在-10～+85°C范围内,精度为±0.5°C。DS18B20可以在信息线上直接获取电源从而省略了外加电源。DS18B20有独特的64位序列码，这使每一条总线上的DS18B20各不相同。