BMA250 Bosch Sensortec, BMA250 Datasheet - Page 29

3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

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

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BMA250E
Manufacturer:
AME
Quantity:
12 000
Part Number:
BMA250E
Manufacturer:
ST
0
Part Number:
BMA250E(F)
Manufacturer:
ST
0
Part Number:
BMA250EF
Manufacturer:
TE
Quantity:
30 000
4.8.6.5 Tap sensing in low power mode
In low-power mode, a limited number of samples is processed after wake-up to decide whether
an interrupt condition is fulfilled. The number of samples is selected by bits (0x2B) tap_samp
according to table 16.
4.8.7 Orientation recognition
The orientation recognition feature informs on an orientation change of the sensor with respect
to the gravitational field vector ‘g’. The measured acceleration vector components with respect
to the gravitational field are defined as shown in figure 8.
Therefore, the magnitudes of the acceleration vectors are calculated as follows:
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.
Table 16: Meaning of (0x2B) tap_samp
Figure 8: Definition of vector components
acc_x = 1g·sin·cos
acc_y = −1g·sin·sin
acc_z = 1g·cos
→ acc_y/acc_x = −tan
tap_samp
(0x2B)
Page 29 / not for publishing
00b
01b
10b
11b
Data sheet
BMA250
Number of
Samples
16
2
4
8
Bosch Sensortec
03 March 2011

Related parts for BMA250