BMA150 datasheet(4/55 Pages) ETC2

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Data sheet

BMA150

Triaxial, digital acceleration sensor

Bosch Sensortec

Rev. 1.5

Page 4

30 May 2008

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.

4. DIGITAL INTERFACE............................................................................................................................ 25

4.1 SPI..................................................................................................................................................... 25

4.1.1 Four-wire SPI interface .............................................................................................................. 25

4.1.2 Three-wire SPI interface ............................................................................................................ 29

4.2 I²C INTERFACE .................................................................................................................................... 32

4.2.1 I²C protocol:................................................................................................................................ 36

5. PACKAGE.............................................................................................................................................. 38

5.1 OUTLINE DIMENSIONS .......................................................................................................................... 38

5.2 AXES ORIENTATION ............................................................................................................................. 39

5.3 LANDING PATTERN RECOMMENDATIONS ............................................................................................... 40

5.4 MOISTURE SENSITIVITY LEVEL AND SOLDERING..................................................................................... 41

5.5 ROHS COMPLIANCY ............................................................................................................................ 41

5.6 NOTE ON INTERNAL PACKAGE STRUCTURE ........................................................................................... 41

6. PIN-OUT OUT AND CONNECTION DIAGRAMS ................................................................................. 42

7. OPERATION MODES ............................................................................................................................ 45

7.1 NORMAL OPERATIONAL MODE.............................................................................................................. 45

7.2 SLEEP MODE....................................................................................................................................... 45

7.3 WAKE-UP MODE .................................................................................................................................. 45

8. DATA CONVERSION ............................................................................................................................ 50

8.1 ACCELERATION DATA .......................................................................................................................... 50

8.2 TEMPERATURE MEASUREMENT ............................................................................................................ 50

9. INTERNAL LOGIC FUNCTIONS........................................................................................................... 51

9.1 FREEFALL LOGIC................................................................................................................................. 51

9.2 HIGH-G LOGIC ..................................................................................................................................... 51

9.3 ANY MOTION DETECTION...................................................................................................................... 52

9.4 ALERT MODE ...................................................................................................................................... 52

10. LEGAL DISCLAIMER.......................................................................................................................... 53

10.1 ENGINEERING SAMPLES..................................................................................................................... 53

10.2 PRODUCT USE................................................................................................................................... 53

10.3 APPLICATION EXAMPLES AND HINTS ................................................................................................... 53

11. DOCUMENT HISTORY AND MODIFICATION ................................................................................... 54

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