One Wire Digital Temperature Sensor - DS18B20
One Wire Digital Temperature Sensor - DS18B20
This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it - allows for a huge number of sensors to be used on one data bus. This is a wonderful part that is the corner stone of many data-logging and temperature control projects.
**Features:**
* Unique 1-Wire® interface requires only one port pin for communication
* Each device has a unique 64-bit serial code stored in an onboard ROM
* Multidrop capability simplifies distributed temperature sensing applications
* Requires no external components
* Can be powered from data line. Power supply range is 3.0V to 5.5V
* Measures temperatures from “55°C to +125°C (“67°F to +257°F)
* ±0.5°C accuracy from “10°C to +85°C
* Thermometer resolution is user-selectable from 9 to 12 bits
* Converts temperature to 12-bit digital word in 750ms (max.)
* User-definable nonvolatile (NV) alarm settings
* Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
* Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
**Documents:**
* [Datasheet](https://cdn.sparkfun.com/assets/4/a/8/8/8/DS18B20.pdf)
* [mbed Example](http://mbed.org/users/snatch59/notebook/onewirecrc/)
* [Bildr Tutorial](http://bildr.org/2011/07/ds18b20-arduino/)
**Videos**
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