18B20

 DALLAS latest DS18B20 single digital temperature sensor is a new "frontline devices," will be smaller and applied voltage wider and more economical. DALLAS DS18B20 is after the company following the DS1820 launched an enhanced version of single digital temperature sensor. In the temperature measurement accuracy, conversion, transmission distance, DS1820 resolution, and other than a big improvement to the user and a more easy-to-use and more satisfactory results. Adapter is a new generation of microprocessor smart temperature sensors, which can be widely used for industrial, civil and military fields temperature measurement and control equipment, monitoring and control systems and large-scale equipment.
DS18B20 performance characteristics:
① single bus proprietary technologies, both through the serial port lines, but also through other i / o mouth line and the computer interface, without going through other transform circuit, the output directly measured temperature.
② temperature range of -55 ℃ to +125 ℃, the measurement resolution of 0.0625 ℃ in the -10 to +85 ℃, the accuracy of ± 0.5 ℃.
③ data available line power supply, voltage range: 3.0 to 5.5 V.
④ negative characteristics: Power to anti-polarity, and the fever thermometer will not burned, but not normal work.
⑤ programmable resolution of 9 ~ 12, the corresponding temperature can be resolved for 0.5 ℃, 0.25 ℃, 0.125 ℃ and 0.0625 ℃.
⑥ laser containing 64 amendments to the CD-rom memory.
⑦ adaptation of SCM system or machine.
⑧ Various users can be set temperature, the lower limit.
⑨ includes parasitic power.
⑩ each chip only coding, support network addressing, zero-power wait.