Datasheet

Data Sheet
BMA456
Page 120
BST-BMA456-DS000-01 | Version 1.1 | October 2017 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
8.2. Sensing axis orientation
If the sensor is accelerated in the indicated directions, the corresponding channel will deliver a positive
acceleration signal (dynamic acceleration). If the sensor is at rest and the force of gravity is acting
along the indicated directions, the output of the corresponding channel will be negative (static
acceleration).
Example: If the sensor is at rest or at uniform motion in a gravity field according to the figure given
below, the output signals are:
• ± 0g for the X channel
• ± 0g for the Y channel
• + 1g for the Z channel
The following table lists all corresponding output signals on X, Y, and Z while the sensor is at rest or
at uniform motion in a gravity field under assumption of a ±4g range setting, a 16 bit resolution, and a
top down gravity vector as shown above.
Sensor Orientation
(gravity vector ↓)
Output Signal X
0g / 0 LSB
1g / 8192 LSB
0g / 0 LSB
-1g / -8292 LSB
0g / 0 LSB
0g / 0 LSB
Output Signal Y
-1g / -8192 LSB
0g / 0 LSB
1g / 8192 LSB
0g / 0 LSB
0g / 0 LSB
0g / 0 LSB
Output Signal Z
0g / 0 LSB
0g / 0 LSB
0g / 0 LSB
0g / 0 LSB
1g / 8192 LSB
-1g / -8192 LSB
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