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DS18B20

Programmable Resolution 1-Wire Digital Thermometer

Courtesy/Thanks to: Maxim Integrated

Description: The DS18B20 digital thermometer provides 9-bit
to 12-bit Celsius temperature measurements and
has an alarm function with nonvolatile userprogrammable upper and lower trigger points.
The DS18B20 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. In
addition, the DS18B20 can derive power directly
from the data line (“parasite power”), eliminating
the need for an external power supply.
Each DS18B20 has a unique 64-bit serial code,
which allows multiple DS18B20s to function on
the same 1-Wire bus. Thus, it is simple to use one
microprocessor to control many DS18B20s
distributed over a large area. Applications that
can benefit from this feature include HVAC
environmental controls, temperature monitoring
systems inside buildings, equipment, or
machinery, and process monitoring and control
systems.

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Files
ds18b20.pdf Datasheet for the DS18B20
Manufacturers
Maxim Maxim Integrated Products
Used in
Getting Temp from DS18B20 Here is episode 10 of Anything Arduino. In this episode we connect a DS18B20 to the Arduino. We down