BMC150 datasheet(4/141 Pages) ETC2

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Datasheet

eCompass BMC150

Page 4

Confidential

BST-BMC150-DS000-03 | Revision 0.4 | February 2013

Bosch Sensortec

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. Not intended for publication.

Index of Contents

1. SPECIFICATION ........................................................................................................................7

1.1 COMPASS ELECTRICAL SPECIFICATION ................................................................................. 7

1.2 ACCELEROMETER SPECIFICATION ........................................................................................ 8

1.3 MAGNETOMETER SPECIFICATION ....................................................................................... 11

2. ABSOLUTE MAXIMUM RATINGS ..........................................................................................15

3. BLOCK DIAGRAM ...................................................................................................................16

4. FUNCTIONAL DESCRIPTION.................................................................................................17

4.1 SUPPLY VOLTAGE AND POWER MANAGEMENT ..................................................................... 17

4.2 POWER MODES................................................................................................................. 17

4.2.1 ACCELEROMETER POWER MODES ................................................................................................. 18

4.2.2 MAGNETOMETER POWER MODES .................................................................................................. 22

4.2.3 BMC150 OVERALL POWER CONSUMPTION .................................................................................... 25

4.3 SENSOR DATA .................................................................................................................. 26

4.3.1 ACCELERATION DATA ................................................................................................................... 26

4.3.2 TEMPERATURE SENSOR................................................................................................................ 27

4.3.3 MAGNETIC FIELD DATA.................................................................................................................. 27

4.3.4 MAGNETIC FIELD DATA TEMPERATURE COMPENSATION................................................................... 29

4.4 SELF-TEST ....................................................................................................................... 30

4.4.1 ACCELEROMETER SELF-TEST........................................................................................................ 30

4.4.2 MAGNETOMETER SELF-TEST......................................................................................................... 31

4.5 ACCELEROMETER OFFSET COMPENSATION......................................................................... 33

4.5.1 SLOW COMPENSATION.................................................................................................................. 35

4.5.2 FAST COMPENSATION................................................................................................................... 35

4.5.3 MANUAL COMPENSATION .............................................................................................................. 36

4.5.4 INLINE CALIBRATION ..................................................................................................................... 36

4.6 NON-VOLATILE MEMORY .................................................................................................... 37

4.6.1 ACCELEROMETER NON-VOLATILE MEMORY .................................................................................... 37

4.6.2 MAGNETOMETER NON-VOLATILE MEMORY ..................................................................................... 37

4.7 ACCELEROMETER INTERRUPT CONTROLLER ....................................................................... 38

4.7.1 GENERAL FEATURES .................................................................................................................... 38

4.7.2 MAPPING TO PHYSICAL INTERRUPT PINS (INTTYPE TO INT PIN#) ..................................................... 39

4.7.3 ELECTRICAL BEHAVIOR (INT PIN# TO OPEN-DRIVE OR PUSH-PULL).................................................. 40

4.7.4 NEW DATA INTERRUPT.................................................................................................................. 40

4.7.5 SLOPE / ANY-MOTION DETECTION.................................................................................................. 41

4.7.6 TAP SENSING ............................................................................................................................... 43

4.7.7 ORIENTATION RECOGNITION ......................................................................................................... 46

4.7.8 FLAT DETECTION.......................................................................................................................... 50

4.7.9 LOW-G INTERRUPT ....................................................................................................................... 51

4.7.10 HIGH-G INTERRUPT .................................................................................................................... 52

4.7.11 NO-MOTION / SLOW MOTION DETECTION ...................................................................................... 53

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