DS18B20 Description
The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 municates over a 1-Wire bus that by definition requires only one data line (and ground) for munication with a central microprocessor. In addition, the DS18B20 can derive power directly from the data line (“parasite power”),...
DS18B20 Key Features
- Unique 1-Wire® Interface Requires Only One Port Pin for munication
- Reduce ponent Count with Integrated Temperature Sensor and EEPROM
- Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C Accuracy from -10°C to +85°C
- Programmable Resolution from 9 Bits to 12 Bits
- No External ponents Required
- Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)
- Simplifies Distributed Temperature-Sensing