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  3. DS18B20

Eldes DS18B20 User manual

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1 . GENERAL OPERATIONAL DESCRIPTION
The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm funcion with nonvolaile
user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by deiniion requires only one
data line (and ground) for communicaion with a central microprocessor. It has an operaing temperature range of -55°C to +125°C (-67°F to
+257°F) and is accurate to ±0.5°C over the range of -10°C to +85°C (14°F to 185°F). In addiion, the DS18B20 can derive power directly from
the data line (“parasite power”), eliminaing the need for an external power supply.
Each DS18B20 has a unique 64-bit serial code, which allows muliple DS18B20s to funcion on the same 1-Wire bus. Thus, it is simple to
use one microprocessor to control many DS18B20s distributed over a large area. Applicaions that can beneit from this feature include
HVAC (heaing, venilaion, and air condiioning) environmental controls, temperature monitoring systems inside buildings, equipment, or
machinery, and process monitoring and control system.
TECHNICAL SPECIFICATIONS:
• Power supply range: 3.0... 5.5V
• Measures tmperatures from -55°C to +125°C (-67°F to +257°F)
• ± 0.5°C accuracy from -10°C to +85°C (14°F to 185°F)
• Cable length: 3m (9.84t)
2. WIRING DIAGRAMS
DIGITAL THERMOMETER
USER GUIDEV1.0
VINSON DS18B20
Contents of Pack
1 x 1 x
BLACK
YELLOW
RED
COM
DATA
+ 5V
RED
BLACK
YELLOW
C1
COM
Z2
BLACK
YELLOW
RED
COM
Z2
C1
ESIM364/ESIM264
ESIM4/ESIM4Q
ESIM022
REDV+
COM
DATA
BLACK
YELLOW
1 2
4
3
BLACK
YELLOW
RED
COM
DATA
+5V
RED
BLACK
YELLOW
C1
COM
Z2
BLACK
YELLOW
RED
COM
Z2
C1
ESIM364/ESIM264
ESIM4/ESIM4Q
ESIM022
REDV+
COM
DATA
BLACK
YELLOW
BLACK
YELLOW
RED
COM
DATA
+5V
RED
BLACK
YELLOW
C1
COM
Z2
BLACK
YELLOW
RED
COM
Z2
C1
ESIM364/ESIM264
ESIM4/ESIM4Q
ESIM022
REDV+
COM
DATA
BLACK
YELLOW
BLACK
YELLOW
RED
COM
DATA
+5V
RED
BLACK
YELLOW
C1
COM
Z2
BLACK
YELLOW
RED
COM
Z2
C1
ESIM364/ESIM264
ESIM4/ESIM4Q
ESIM022
REDV+
COM
DATA
BLACK
YELLOW
/