BMA150 Bosch Sensortec, BMA150 Datasheet - Page 37

• Manufacturer Part Number: BMA150
• Description: 3-AXIS ACCELEROMETER DIGITAL I/F
• Manufacturer: Bosch Sensortec

Specifications of BMA150

• Axis: X, Y, Z
• Acceleration Range: ± 2g, 4g, 8g
• Sensitivity: 256LSB/g, 128LSB/g, 64LSB/g
• Voltage - Supply: 2.4 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 3kHz
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Package / Case: 12-LGA
• For Use With: DM180021 - KIT STARTER MPLAB FOR PIC18F MCU828-1013 - BMA150 TRIBOX DEMO BOARD W/USB828-1009 - BMA150 DAUGHTERCARD FOR DEV KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 0273 141 043; 828-1003-2

To be able to access registers in read mode, first address has to be send in write mode. Then a
stop and a start conditions are issued and data bytes are transferred with automatic address
increment:
Figure 16: I²C multiple read protocol. Address register is first written to BMA150, the RW=0
(lowest acceleration data located at address 02h). I²C transfer is stopped and restarted with
RW=1, address is automatically incremented and the 6 bytes can be sequentially read out.
Rev. 1.6
© 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.
Start
Start
S
S
0
0
1
1
Slave Adress
Slave Adress
1
1
1
1
0
0
0
0
0
0
RW ACK
RW ACK
0
1
Triaxial, digital acceleration sensor
…
…
X
X
X
X
X
X
X
0
Register data - adress 02h
Register data - adress 04h
Register data - adress 06h
0
X
X
X
Data sheet
BMA150
Register adress (02h)
Page 37
Control byte
Data byte
Data byte
Data byte
0
X
X
X
0
X
X
X
X
X
X
0
X
X
X
1
X
X
X
0
ACK
ACK
ACK
ACK
Stop
P
X
X
X
X
X
X
Register data - adress 03h
Register data - adress 05h
Register data - adress 07h
X
X
X
Data byte
Data byte
Data byte
X
X
X
Bosch Sensortec
X
X
X
30 October 2008
X
X
X
X
X
X
X
X
X
ACK
ACK
NACK
Stop
…
…
P