DS18B20数字温度计介毕业论文外文翻译.doc

外文翻译 DS18B20 brief introduction： FEATURES Unique 1-Wireinterface requires only one port pin for communication Each device has a unique 64-bit serial code stored in an onboard ROM Multidrop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Measures temperatures from –55°C to +125°C (–67°F to +257°F) 0.5C accuracy from –10°C to +85°C Thermometer resolution is user-selectable from 9 to 12 bits Converts temperature to 12-bit digital word in 750ms (max.) User-definable nonvolatile (NV) alarm settings Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) Available in 8-pin SO (150mil), 8-pin SOP, and 3-pin TO-92 packages Software compatible with the DS1822 Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive 特征： 独特的单线接口，只需 1 个接口引脚即可通信 每个设备都有一个唯一的64位串行代码存储在光盘片上 多点能力使分布式温度检测应用得以简化 不需要外部部件 可以从数据线供电，电源电压范围为3.0V至5.5V 测量范围从-55 ° C 至+125 ° C（-67 ° F至257 ° F），从-10℃至+85 ° C的精度为0.5 ° C温度计分辨率是用户可选择的9至12位 转换12位数字的最长时间是750ms 用户可定义的 非易失性的温度告警设置 告警有哪些信誉好的足球投注网站命令识别和寻址温度在编定的极限之外的器件 （温度告警情况） 采用8引脚SO（150mil），8引脚SOP和3引脚TO - 92封装 软件与DS1822兼容 应用范围包括恒温控制 工业系统 消费类产品 温度计或任何热敏系统 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 line (and ground) for communication with a central microprocessor. It has an operating temperature range of –55°C to +125°Cand is accurate to 0.5C over the range of –10°C to +85°C. In addition, the DS18B20 can derive powerdirectly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial code, which allows