Bosch Sensortec | BMP388 Datasheet

4 | 59

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

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

Table of Contents

1. Specification.....................................................................................................................................................................7

2. Absolute maximum ratings.............................................................................................................................................9

3. Functional description ....................................................................................................................................................9

3.1. Block diagram.........................................................................................................................................................10

3.2. Power management................................................................................................................................................ 11

3.3. Power modes .......................................................................................................................................................... 11

3.3.1.

Sleep mode ...................................................................................................................................................... 11

3.3.2.

Forced mode ..................................................................................................................................................... 11

3.3.3.

Normal mode.....................................................................................................................................................12

3.3.4.

Mode transition diagram....................................................................................................................................13

3.4. Measurement flow ..................................................................................................................................................13

3.4.1.

Pressure measurement.....................................................................................................................................14

3.4.2.

Temperature measurement ...............................................................................................................................14

3.4.3.

IIR filter ..............................................................................................................................................................15

3.4.4.

Oversampling ....................................................................................................................................................15

3.5. Filter selection ........................................................................................................................................................17

3.6. FIFO Description.....................................................................................................................................................18

3.6.1.

FIFO input data .................................................................................................................................................18

3.6.2.

FIFO data sampling selection............................................................................................................................18

3.6.3.

FIFO read out ....................................................................................................................................................18

3.6.4.

FIFO overflow behavior .....................................................................................................................................19

3.6.5.

FIFO Frames .....................................................................................................................................................19

3.6.7.

FIFO flush conditions ........................................................................................................................................21

3.7. Interrupts.................................................................................................................................................................22

3.7.1.

Interrupt default mode .......................................................................................................................................22

3.7.2.

Interrupt pin latching..........................................................................................................................................22

3.7.3.

Monitoring..........................................................................................................................................................22

3.7.4.

Interrupt Pin Configuration ................................................................................................................................22

3.7.5.

Interrupt functions..............................................................................................................................................23

3.8. Current consumption .............................................................................................................................................26

3.9. Measurement timings.............................................................................................................................................26

3.9.1.

Measurement time.............................................................................................................................................26

3.9.2.

Measurement rate in forced mode and normal mode .......................................................................................27

3.10.

Data readout from data registers ......................................................................................................................27

3.10.1. Data register shadowing....................................................................................................................................27

3.11.

Output compensation.........................................................................................................................................28

3.11.1. Memory Map Trimming Coefficients..................................................................................................................28

4. Global memory map and register description............................................................................................................29

4.1. General remarks .....................................................................................................................................................29

4.2. Datasheet Memory Map .........................................................................................................................................29

4.3. Register description...............................................................................................................................................31

4.3.1.

Register 0x00 “CHIP_ID”...................................................................................................................................31

4.3.2.

Register 0x02 “ERR_REG” ...............................................................................................................................31

4.3.3.

Register 0x03 “STATUS” ...................................................................................................................................31

4.3.4.

Register 0x04 .. 0x06 Pressure Data ................................................................................................................32

4.3.5.

Register 0x07 .. 0x09 Temperature Data ..........................................................................................................32

4.3.6.

Register 0x0C .. 0x0E Sensor Time ..................................................................................................................33

4.3.7.

Register 0x10 “EVENT”.....................................................................................................................................33

4.3.8.

Register 0x11 “INT_STATUS”............................................................................................................................33