bmp280 datasheet

Bosch
Sensortec | BMP280 Data sheet
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48
Modifications reserved | Data subject to change without notice
Document number: BST-BMP280-DS001-23 Revision_1.23_11202
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Index of Contents
1.
Specification ......................................................................................................................................7
2. Absolute maximum ratings ..............................................................................................................9
3. Functional description ................................................................................................................... 10
3.1 Block Diagram ......................................................................................................................... 11
3.2 Power management ................................................................................................................ 11
3.3 Measurement flow ................................................................................................................... 11
3.3.1 Pressure measurement .......................................................................................... 12
3.3.2 Temperature measurement .................................................................................... 13
3.3.3 IIR filter.................................................................................................................... 13
3.4 Filter selection.......................................................................................................................... 14
3.5 Noise ........................................................................................................................................ 15
3.6 Power modes ........................................................................................................................... 15
3.6.1 Sleep mode ............................................................................................................. 16
3.6.2 Forced mode ........................................................................................................... 16
3.6.3 Normal mode .......................................................................................................... 16
3.6.4 Mode transition diagram ......................................................................................... 17
3.7 Current consumption ............................................................................................................... 18
3.8 Measurement timings .............................................................................................................. 18
3.8.1 Measurement time .................................................................................................. 18
3.8.2 Measurement rate in normal mode ......................................................................... 19
3.9 Data readout ............................................................................................................................ 20
3.10 Data register shadowing .......................................................................................................... 20
3.11 Output compensation .............................................................................................................. 20
3.11.1 Computational requirements .................................................................................. 20
3.11.2 Trimming parameter readout .................................................................................. 21
3.11.3 Compensation formula ............................................................................................ 21
3.12 Calculating pressure and temperature .................................................................................... 22