1-wire thermal sensor

The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements. It communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C.

Lines used as 1-wire bus:

Aria pins Signals
S1 3V3
S2 1-wire data
S24 GND

DS18B20
EUR 5.00


1-wire Dallas DS18B20 thermal sensor

The Dallas/Maxim DS18B20 is a 1-wire digital thermometer:

  • 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
  • Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM

| How to use with the Acme boards | Product description |