DS18B20 Datasheet and Product Info | Analog Devices 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
Programmable Resolution 1-Wire Digital Thermometer 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