Bosch Sensortec | BMP388 Datasheet

5 | 59

Modifications reserved |Data subject to change without notice | Printed in Germany

Document number: BST-BMP388-DS001-07 Revision_1.7_112020

4.3.9.

Register 0x12 .. 0x13 “FIFO_LENGTH” ............................................................................................................33

4.3.10. Register 0x14 “FIFO_DATA” .............................................................................................................................34

4.3.11. Register 0x15 .. 0x16 FIFO Watermark.............................................................................................................34

4.3.12. Register 0x17 “FIFO_CONFIG_1”.....................................................................................................................34

4.3.13. Register 0x18 “FIFO_CONFIG_2”.....................................................................................................................35

4.3.14. Register 0x19 “INT_CTRL”................................................................................................................................35

4.3.15. Register 0x1A “IF_CONF” .................................................................................................................................36

4.3.16. Register 0x1B “PWR_CTRL”.............................................................................................................................36

4.3.17. Register 0x1C “OSR” ........................................................................................................................................37

4.3.18. Register 0x1D “ODR” ........................................................................................................................................37

4.3.19. Control settings for odr_sel ...............................................................................................................................38

4.3.20. Register 0x1F “CONFIG”...................................................................................................................................39

4.3.21. Register 0x30 .. 0x57 “calibration data” ............................................................................................................39

4.3.22. Register 0x7E “CMD” ........................................................................................................................................39

5. Digital interfaces............................................................................................................................................................40

5.1. Interface selection ..................................................................................................................................................40

5.2. I²C Interface.............................................................................................................................................................40

5.2.1.

I²C write .............................................................................................................................................................41

5.2.2.

I²C read..............................................................................................................................................................41

5.3. SPI interface............................................................................................................................................................42

5.3.1.

SPI write ............................................................................................................................................................42

5.3.2.

SPI read.............................................................................................................................................................43

5.4. Interface parameter specification .........................................................................................................................43

5.4.1.

General interface parameters............................................................................................................................43

5.4.2.

I²C timings .........................................................................................................................................................43

5.4.3.

SPI timings ........................................................................................................................................................45

6. Pin-out and connection diagram..................................................................................................................................46

6.1. Pin-out .....................................................................................................................................................................46

6.2. Connection diagram ¾-wire SPI............................................................................................................................47

6.3. Connection diagram I²C .........................................................................................................................................48

7. Package, reel and environment....................................................................................................................................49

7.1. Outline dimensions ................................................................................................................................................49

7.2. Landing pattern.......................................................................................................................................................49

7.3. Marking....................................................................................................................................................................50

7.3.1.

Mass production samples..................................................................................................................................50

7.3.2.

Engineering samples.........................................................................................................................................50

7.4. Soldering guidelines ..............................................................................................................................................51

7.5. Tape and reel specification....................................................................................................................................52

7.5.1.

Dimensions........................................................................................................................................................52

7.5.2.

Orientation within the reel..................................................................................................................................52

7.6. Mounting and assembly recommendations ........................................................................................................52

7.7. Environmental safety .............................................................................................................................................53

7.7.1.

RoHS.................................................................................................................................................................53

7.7.2.

Halogen content ................................................................................................................................................53

7.7.3.

Internal package structure.................................................................................................................................53

8. Legal disclaimer.............................................................................................................................................................54

8.1. Engineering samples .............................................................................................................................................54

8.2. Product use.............................................................................................................................................................54

8.3. Application examples and hints............................................................................................................................54

9. Appendix: Computation formulae reference implementation...................................................................................55