DescriptionThe BME280 is as combined digital humidity, pressure and temperature sensor based on proven sensing principles. The sensor module is housed in an extremely compact metal-lid LGA package with a footprint of only 2.5 × 2.5 mm² with a height of 0.93 mm. Its small dimensions and its low power consumption allow the implementation in battery driven devices such as handsets, GPS modules or watches. The BME280 is register and performance compatible to the Bosch Sensortec BMP280 digital pressure sensorKey Features:Package- 2.5 mm x 2.5 mm x 0.93 mm metal lid LGADigital interface- I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)Supply voltageVDD main supply voltage range: 1.71 V to 3.6 VVDDIO interface voltage range: 1.2 V to 3.6 VCurrent consumption 1.8 µA @ 1 Hz humidity and temperature2.8 µA @ 1 Hz pressure and temperature3.6 µA @ 1 Hz humidity, pressure and temperature0.1 µA in sleep modeOperating range: -40… 85 °C, 0…100 % rel. humidity, 300…1100 hPaHumidity sensor and pressure sensor can be independently enabled / disabledRegister and performance compatible to Bosch Sensortec BMP280 digital pressure sensorRoHS compliant, halogen-free, MSLKey parameters for humidity sensor:Response time: 1 sAccuracy tolerance: ±3 % relative humidityHysteresis: ±1% relative humidityKey parameters for pressure sensor:RMS Noise: 0.2 Pa, equiv. to 1.7 cmOffset temperature coefficient: ±1.5 Pa/K, equiv. to ±12.6 cm at 1 °C temperature changeTypical applications:Context awareness, e.g. skin detection, room change detectionHealth monitoring / well-beingWarning regarding dehydration or heat strokeSpirometry (measurement of lung volume and air flow)Home automation controlcontrol heating, venting, air conditioning (HVAC)Internet of thingsGPS 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 applicationsWeather forecastVertical velocity indication (rise/sink speed)BME280 Datasheet
