NS18B20: 1-Wire Digital Thermometer Datasheet
■NS18B20 is a high precision 1-wire bus system temperature measurement chip. The temperature range of the temperature sensor is -55 °C to +125 °C. The digital conversion accuracy and temperature measurement speed can be set through the configuration register according to user needs. NS18B20 has a built-in 5byte non-volatile storage unit for users to use. 3byte is used for high and low temperature alarms and configuration accuracy. In addition, 2byte is used to save user-defined information. The nonvolatile storage write cycle takes 10ms. The maximum error of the device is ±1°C over the full temperature range. NS18B20 has two working modes: parasitic power supply and external power supply, in which the parasitic power supply can be powered through the data line without external power supply.
■Each NS18B20 has a unique 64-bit serial number. Using a single bus interface allows multiple devices to hang on the same bus. Therefore, this feature can use a processor to control multiple NS18B20 sensors. NS18B20 is widely used in distributed temperature environment monitoring, temperature control and other systems.
●FEATURES
■Unique 1-Wire interface requires only one port pin for communication
■Each Device has a Unique 64-Bit Serial Code Stored in an On-Board ROM
■Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
■Maintain high accuracy in the full temperature range
▲±0.5°C accuracy from -10°C to +85°C
▲±1°C accuracy from -55°C to -125°C
■Converts 12-bit temperature to digital word in 50 ms
■No extra pull-up required for temperature conversion
■Requires no external components
■Power supply range is 2.7V to 5.5V
■Thermometer resolution is programmable from 9 to 12 bits
■User-definable, nonvolatile temperature alarm settings
■Available in TO-92 Package
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Digital Thermometer 、 high precision 1-wire bus system temperature measurement chip 、 chip |
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[ Process monitoring and control system ][ Industrial Internet of Things ][ White goods ][ Temperature monitoring ] |
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Datasheet |
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Please see the document for details |
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TO-92 |
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English Chinese Chinese and English Japanese |
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2020/4/10 |
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REVISION 1.0 |
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2.2 MB |
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