Data Sheet

Final Datasheet
BME280 Environmental sensor
Page 2
BST-BME280-DS001-10 | Revision 1.1 | May 2015 Bosch Sensortec
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third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
BME280
DIGITAL HUMIDITY, PRESSURE AND TEMPERATURE SENSOR
Key features
 Package 2.5 mm x 2.5 mm x 0.93 mm metal lid LGA
 Digital interface I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)
 Supply voltage V
DD
main supply voltage range: 1.71 V to 3.6 V
V
DDIO
interface voltage range: 1.2 V to 3.6 V
 Current consumption 1.8 µA @ 1 Hz humidity and temperature
2.8 µA @ 1 Hz pressure and temperature
3.6 µA @ 1 Hz humidity, pressure and temperature
0.1 µA in sleep mode
 Operating range -
 Humidity sensor and pressure sensor can be independently enabled / disabled
 Register and performance compatible to Bosch Sensortec BMP280 digital pressure sensor
 RoHS compliant, halogen-free, MSL1
Key parameters for humidity sensor
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 Response time 

 1 s
 Accuracy tolerance ±3 % relative humidity
 Hysteresis ±1% relative humidity
Key parameters for pressure sensor
 RMS Noise 0.2 Pa, equiv. to 1.7 cm
 Offset temperature coefficient ±1.5 Pa/K, equiv. to ±12.6 cm at 1 °C temperature change
Typical application
 Context awareness, e.g. skin detection, room change detection
 Health monitoring / well-being
 Warning regarding dehydration or heat stroke
 Spirometry (measurement of lung volume and air flow)
 Home automation control
 control heating, venting, air conditioning (HVAC)
 Internet of things
 GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
 Indoor navigation (change of floor detection, elevator detection)
 Outdoor navigation, leisure and sports applications
 Weather forecast
 Vertical velocity indication (rise/sink speed)
Target devices
 Handsets such as mobile phones, tablet PCs, GPS devices
 Navigation systems
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Target values