BMA250 Bosch Sensortec, BMA250 Datasheet - Page 4

• Manufacturer Part Number: BMA250
• Description: 3-AXIS ACCELEROMETER DIGITAL I/F
• Manufacturer: Bosch Sensortec
• Series: -r

Specifications of BMA250

• Featured Product: BMA250 - Digital, Triaxial Acceleration Sensor
• Axis: X, Y, Z
• Acceleration Range: ±2g, 4g, 8g, 16g
• Sensitivity: 256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
• Voltage - Supply: 1.62 V ~ 3.6 V
• Output Type: I²C™, SPI™
• Bandwidth: 8Hz ~ 1kHz
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Package / Case: 12-VQFN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With: 828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
• Other names: 828-1023-2

1. SPECIFICATION...................................................................................................................................... 7
2. ABSOLUTE MAXIMUM RATINGS.......................................................................................................... 9
3. BLOCK DIAGRAM................................................................................................................................. 10
4. FUNCTIONAL DESCRIPTION............................................................................................................... 10
Rev. 1.0
© 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.
4.1 P
4.2 O
4.3 P
4.4 S
4.5 S
4.6 O
4.7 N
4.8 I
4.2.1 General mode............................................................................................................................. 12
4.2.2 Dedicated mode (μC-less or stand-alone mode)....................................................................... 12
4.4.1 Acceleration data ....................................................................................................................... 16
4.4.2 Temperature data....................................................................................................................... 17
4.6.1 Slow compensation .................................................................................................................... 20
4.6.2 Fast compensation..................................................................................................................... 21
4.6.3 Manual compensation ................................................................................................................ 21
4.6.4 Inline calibration ......................................................................................................................... 21
4.8.1 General features ........................................................................................................................ 23
4.8.2 Mapping (inttype to INT Pin#) .................................................................................................... 24
4.8.3 Electrical behaviour (INT pin# to open-drive or push-pull) ........................................................ 24
4.8.4 New data interrupt...................................................................................................................... 25
4.8.5 Any-motion (slope) detection ..................................................................................................... 25
4.8.5.1 Enabling (disabling) for each axis........................................................................................... 26
4.8.5.2 Axis and sign information of any motion interrupt................................................................... 26
4.8.5.3 Serial interface and dedicated wake-up mode........................................................................ 26
4.8.6 Tap sensing................................................................................................................................ 26
4.8.6.1 Single tap detection................................................................................................................. 28
4.8.6.2 Double tap detection ............................................................................................................... 28
4.8.6.3 Selecting the timing of tap detection ....................................................................................... 28
4.8.6.4 Axis and sign information of tap sensing ................................................................................ 28
4.8.6.5 Tap sensing in low power mode ............................................................................................. 29
4.8.7 Orientation recognition ............................................................................................................... 29
4.8.7.1 Orientation blocking ................................................................................................................ 32
4.8.8 Flat detection.............................................................................................................................. 33
4.8.9 Low-g interrupt ........................................................................................................................... 34
4.8.10 High-g interrupt ........................................................................................................................ 34
4.8.10.1 Axis and sign information of high-g interrupt ........................................................................ 35
NTERRUPT CONTROLLER
OWER MANAGEMENT
OWER MODES
ENSOR DATA
ELF
ON
PERATIONAL MODES
FFSET COMPENSATION
-
-
VOLATILE MEMORY
TEST
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..................................................................................................................................... 16
.................................................................................................................................... 14
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......................................................................................................................... 11
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Page 4 / not for publishing
Index of Contents
Data sheet
BMA250
Bosch Sensortec
03 March 2011