BMA250 Bosch Sensortec, BMA250 Datasheet - Page 62

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

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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

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7. Pin-out and connection diagram
7.1 Pin-out
Table 75: Pin description
Pin#
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.
10
11
12
1
2
3
4
5
6
7
8
9
GNDIO
Name
VDDIO
GND
SDO
INT1
INT2
VDD
CSB
SDx
SCx
NC
PS
Figure 18: Pin-out top view
I/O Type
Digital out
Digital out
Digital I/O
Digital out
Digital in
Digital in
Digital in
Ground
Ground
Supply
Supply
Pads not visible!
--
Top View
Description
Serial data output in SPI
Address select in I²C mode
see chapter 6.2
SDA serial data I/O in I²C
SDI serial data input in SPI 4W
SDA serial data I/O in SPI 3W
Digital I/O supply voltage (1.2V
… 3.6V)
Interrupt output 1
Interrupt output 2
Power supply for analog & digital
domain (1.62V … 3.6V)
Ground for I/O
Ground for digital & analog
Chip select for SPI mode
Protocol select (GND = SPI,
V
must not float unless dedicated
mode is used, see chapter 4.2.2
SCK for SPI serial clock
SCL for I²C serial clock
DDIO
= I²C, float = μC-less). Pin
Page 62 / not for publishing
Data sheet
BMA250
Figure 19 Pin-out bottom view
GND
in SPI 4W
SDO
SDI
V
GND
INT1
INT2
V
GND
CSB
GND
SCK
DDIO
DD
Bottom View
Pads visible!
Connect to
In SPI 3W
DNC (float)
SDA
V
GND
INT1
INT2
V
GND
GND
CSB
GND
SCK
DDIO
DD
Bosch Sensortec
03 March 2011
in I²C
GND for
default addr.
SDA
V
GND
INT1
INT2
V
GND
GND
DNC (float)
V
SCL
DDIO
DD
DDIO

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