Bosch Sensortec | BMP280 Data sheet

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Modifications reserved | Data subject to change without notice

Document number: BST-BMP280-DS001-26 Revision_1.26_102021

4. Global memory map and register description............................................................................. 24

4.1 General remarks......................................................................................................................24

4.2 Memory map............................................................................................................................24

4.3 Register description.................................................................................................................24

4.3.1 Register 0xD0 “id”................................................................................................... 24

4.3.2 Register 0xE0 “reset”.............................................................................................. 24

4.3.3 Register 0xF3 “status” ............................................................................................ 25

4.3.4 Register 0xF4 “ctrl_meas” ...................................................................................... 25

4.3.5 Register 0xF5 “config” ............................................................................................ 26

4.3.6 Register 0xF7…0xF9 “press” (_msb, _lsb, _xlsb) .................................................. 26

4.3.7 Register 0xFA…0xFC “temp” (_msb, _lsb, _xlsb) .................................................. 26

5. Digital interfaces ............................................................................................................................ 27

5.1 Interface selection ...................................................................................................................27

5.2 I²C Interface.............................................................................................................................27

5.2.1 I²C write................................................................................................................... 28

5.2.2 I²C read................................................................................................................... 29

5.3 SPI interface ............................................................................................................................29

5.3.1 SPI write.................................................................................................................. 30

5.3.2 SPI read.................................................................................................................. 30

5.4 Interface parameter specification ............................................................................................31

5.4.1 General interface parameters................................................................................. 31

5.4.2 I²C timings............................................................................................................... 31

5.4.3 SPI timings.............................................................................................................. 33

6. Pin-out and connection diagram .................................................................................................. 34

6.1 Pin-out .....................................................................................................................................34

6.2 Connection diagram 3-wire SPI...............................................................................................36

6.3 Connection diagram I2C...........................................................................................................37

7. Package, reel and environment .................................................................................................... 38

7.1 Outline dimensions ..................................................................................................................38