Data Sheet

Bosch Sensortec | BME280 Data sheet
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Modifications reserved | Data subject to change without notice
Document number: BST-BME280-DS002-15
Revision_1.6_092018
Index of Contents
1. Specification ......................................................................................................................................8
1.1 General electrical specification .................................................................................................. 8
1.2 Humidity parameter specification .............................................................................................. 9
1.3 Pressure sensor specification.................................................................................................. 10
1.4 Temperature sensor specification ............................................................................................ 11
2. Absolute maximum ratings ........................................................................................................... 13
3. Functional description ................................................................................................................... 14
3.1 Block diagram .......................................................................................................................... 14
3.2 Power management ................................................................................................................ 14
3.3 Sensor modes.......................................................................................................................... 14
3.3.1 Sensor mode transitions ......................................................................................... 15
3.3.2 Sleep mode ............................................................................................................. 15
3.3.3 Forced mode ........................................................................................................... 15
3.3.4 Normal mode .......................................................................................................... 16
3.4 Measurement flow ................................................................................................................... 17
3.4.1 Humidity measurement ........................................................................................... 17
3.4.2 Pressure measurement .......................................................................................... 17
3.4.3 Temperature measurement .................................................................................... 17
3.4.4 IIR filter.................................................................................................................... 18
3.5 Recommended modes of operation ........................................................................................ 19
3.5.1 Weather monitoring ................................................................................................ 19
3.5.2 Humidity sensing .................................................................................................... 19
3.5.3 Indoor navigation .................................................................................................... 20
3.5.4 Gaming ................................................................................................................... 20
3.6 Noise ........................................................................................................................................ 21
4. Data readout .................................................................................................................................... 23
4.1 Data register shadowing .......................................................................................................... 23