3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part NumberBMA250
Description3-AXIS ACCELEROMETER DIGITAL I/F
ManufacturerBosch Sensortec
Series-
BMA250 datasheets
 


Specifications of BMA250

Featured ProductBMA250 - Digital, Triaxial Acceleration SensorAxisX, Y, Z
Acceleration Range±2g, 4g, 8g, 16gSensitivity256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply1.62 V ~ 3.6 VOutput TypeI²C™, SPI™
Bandwidth8Hz ~ 1kHzInterfaceI²C, SPI
Mounting TypeSurface MountPackage / Case12-VQFN
Lead Free Status / Rohs StatusLead free / RoHS CompliantFor Use With828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names828-1023-2  
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| Bosch Sensortec | BMA250
Pin configuration (top view)
pin #12
pin #12
pin #1
pin #1
SDO
SDO
SCK
SCK
PS
PS
SDx
SDx
BMA222
BMA222
250
(top view)
(top view)
GND
GND
V
V
DDIO
DDIO
NC
NC
INT1
INT1
INT2
INT2
Pin
Name
Function
No.
1
SDO
SPI serial data output
2
SDA,
I
C / SPI serial data input/
2
SDI,
output
SDO
3
V
I/O supply voltage
DDIO
4
N.C.
Not connected
5
INT1
Interrupt output #1
6
INT2
Interrupt output #2
7
V
Supply voltage
DD
8
GND
Ground I/O
IO
9
GND
Ground
10
CSB
SPI chip select
11
PS
Protocol select pin (0=SPI,
1=I
C)
2
12
SCK
SCL (I
C serial clock)
2
SCK (SPI serial clock)
The BMA250 features I
C and SPI (3-wire/4-wire) dig-
2
tal serial interfaces. Sensor parameters, like g-ranges
or low-pass filter settings, and also all interrupt engi-
ne settings can be easily programmed via the digital
interfaces.
Integrated interrupt engine
One of the key elements of the BMA250 is the enhan-
ced intelligent interrupt engine that gives the hard-
and software designer full control. Various motion
detection scenarios can be identified by the BMA250
and signaled to the system via two interrupt pins. The
interrupt sources can be freely mapped to either of
the two interrupt pins.
Data & Specification subject to change without notice
© Bosch Sensortec GmbH reserves all rights in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third par-
ties. BOSCH and the symbols are registered trademarks of Robert Bosch GmbH, Germany.
Following motion detection use case scenarios are
supported by the BMA250 interrupt engine:
Data-ready (e.
f
Any-motion (slope) detection (e.
f
f
Tap sensing (e.
CSB
CSB
f
Orientation change recognition (e.
landscape & face-up/face-down switching)
GND
GND
Flat detection (e.
f
switching)
IO
IO
Low-g / high-g detection (e.
f
free-fall detection)
pin #7
pin #7
V
V
DDA
DDA
Interrupt parameters (e. g. switching angles and
hysteresis settings for orientation change) can be
configured by the designer and thus perfectly support
the integration of the BMA250 into the user’s system
environment.
System compatibility
The BMA250 has been designed for best possible fit
into modern mobile consumer electronics devices.
Besides the ultra-small footprint and lowest power
consumption, the BMA250 has very wide ranges for
and V
V
DD
feature facilitates overall system reliability.
g. for processor synchronization)
g. for wake-up)
g. for tap-sensitive UI control)
g. for portrait/
g. for position sensitive
g. for shock and
supply voltages. An integrated self-test
DDIO
Headquarters
Bosch Sensortec GmbH
Gerhard-Kindler-Strasse 8
72770 Reutlingen · Germany
Telephone +49 7121 3535 900
Fax +49 7121 3535 909
contact@bosch-sensortec.com
www.bosch-sensortec.com
Doc.-Number: BST-BMA250-FL000-01 / Version_1.1_012011