Data Sheet

Final Datasheet

BME280 Environmental sensor

Page 3

BST-BME280-DS001-10 | Revision 1.1 | May 2015 Bosch Sensortec

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.

 Gaming, e.g flying toys

 Camera (DSC, video)

 Portable health care devices

 Home weather stations

 Flying toys

 Watches

General Description

The 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 sensor (see chapter 5.2 for details).

The BME280 achieves high performance in all applications requiring humidity and pressure

measurement. These emerging applications of home automation control, in-door navigation,

health care as well as GPS refinement require a high accuracy and a low TCO at the same

time.

The humidity sensor provides an extremely fast response time for fast context awareness

applications and high overall accuracy over a wide temperature range.

The pressure sensor is an absolute barometric pressure sensor with extremely high accuracy

and resolution and drastically lower noise than the Bosch Sensortec BMP180.

The integrated temperature sensor has been optimized for lowest noise and highest resolution.

Its output is used for temperature compensation of the pressure and humidity sensors and can

also be used for estimation of the ambient temperature.

The sensor provides both SPI and I²C interfaces and can be supplied using 1.71 to 3.6 V for the

sensor supply V

and 1.2 to 3.6 V for the interface supply V

DDIO

. Measurements can be

triggered by the host or performed in regular intervals. When the sensor is disabled, current

consumption drops to 0.1 µA.

BME280 can be operated in three power modes (see chapter 3.3):

 sleep mode

 normal mode

 forced mode

In order to tailor data rate, noise, response time and current consumption to the needs of the

user, a variety of oversampling modes, filter modes and data rates can be selected.

Please contact your regional Bosch Sensortec partner for more information about software

packages.