DS18B20U+..

The DS18B20U+ is a 1-Wire® programmable resolution Digital Thermometer. The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with non-volatile 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. In addition, the DS18B20 can derive power directly 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 multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area.

• Unique 1-Wire® interface requires only one port pin for communication
• Each device has a unique 64-bit serial code stored in an on-board ROM
• Multidrop capability simplifies distributed temperature-sensing applications
• Requires no external components
• Convert temperature to 12-bit digital word in 750ms (maximum)

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