BME280 datasheet(3/60 Pages) BOSCH

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Bosch Sensortec | BME280 Data sheet

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Modifications reserved | Data subject to change without notice

Document number: BST-BME280-DS001-23 Revision_1.23_012022

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, fitness 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 VDD and 1.2 to 3.6 V for the interface supply VDDIO. 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.

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