Datasheet

BMM150 Geomagnetic Sensor

Page 4

BST-BMM150-DS001-01 | Revision 1.0 | April 2013

Bosch Sensortec

© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to

third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

Index of Contents

1. SPECIFICATION ........................................................................................................................6

1.1 ELECTRICAL OPERATION CONDITIONS................................................................................... 6

1.2 MAGNETOMETER OUTPUT SIGNAL SPECIFICATION ................................................................. 7

2. ABSOLUTE MAXIMUM RATINGS ............................................................................................9

3. BLOCK DIAGRAM ...................................................................................................................10

4. FUNCTIONAL DESCRIPTION.................................................................................................11

4.1 POWER MANAGEMENT....................................................................................................... 11

4.2 POWER MODES................................................................................................................. 11

4.2.1 POWER OFF MODE ....................................................................................................................... 11

4.2.2 SUSPEND MODE ........................................................................................................................... 11

4.2.3 SLEEP MODE................................................................................................................................ 12

4.2.4 ACTIVE MODE............................................................................................................................... 12

4.3 SENSOR OUTPUT DATA...................................................................................................... 14

4.3.1 MAGNETIC FIELD DATA.................................................................................................................. 14

4.3.2 MAGNETIC FIELD DATA TEMPERATURE COMPENSATION................................................................... 15

4.4 SELF-TEST ....................................................................................................................... 16

4.4.1 NORMAL SELF TEST...................................................................................................................... 16

4.4.2 ADVANCED SELF TEST .................................................................................................................. 16

4.5 NON-VOLATILE MEMORY .................................................................................................... 17

4.6 MAGNETOMETER INTERRUPT CONTROLLER ........................................................................ 17

4.6.1 GENERAL FEATURES .................................................................................................................... 18

4.6.2 ELECTRICAL BEHAVIOR OF MAGNETIC INTERRUPT PINS ................................................................... 18

4.6.3 DATA READY / DRDY INTERRUPT.................................................................................................. 19

4.6.4 LOW-THRESHOLD INTERRUPT........................................................................................................ 19

4.6.5 HIGH-THRESHOLD INTERRUPT....................................................................................................... 21

4.6.6 OVERFLOW.................................................................................................................................. 21

5. REGISTER DESCRIPTION......................................................................................................22

5.1 GENERAL REMARKS.......................................................................................................... 22

5.2 REGISTER MAP ................................................................................................................. 22

5.3 CHIP ID............................................................................................................................ 23

5.4 MAGNETIC FIELD DATA ...................................................................................................... 23

5.5 INTERRUPT STATUS REGISTER ........................................................................................... 26

5.6 POWER AND OPERATION MODES, SELF-TEST AND DATA OUTPUT RATE CONTROL REGISTERS.. 26

5.7 INTERRUPT AND AXIS ENABLE SETTINGS CONTROL REGISTERS............................................. 28

5.8 NUMBER OF REPETITIONS CONTROL REGISTERS ................................................................. 30