The DS18B20 Digital Thermometer provides 9 to 12-bit (configurable) temperature readings, which indicate the temperature of the device. Information is sent to/from the DS18B20 over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source.

• Manufacturer: Dallas Semiconductor (Maxim).
• Manufacturer P/N: DS18B20.
• 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.
• Requires NO external components.
• Can be powered from data line from 3V to 5.5V.