BMA150 Bosch Sensortec, BMA150 Datasheet - Page 34

• 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

Start and stop conditions:
Data transfer begins by a falling edge on SDA when SCK is high (start condition (S) indicated by
I²C bus master). Stop condition (P) is a rising edge on SDA when SCK is high (see figure 12).
Bit transfer:
One data bit is transferred during each SCK pulse. Data on SDA line must remain stable during
high period of SCK pulse (see figure 13).
Acknowledge:
After start condition each byte of data transfer is followed by an acknowledge bit. The
transmitter let the SDA line high (no pull down) and generates a high SCK pulse. If BMA150 has
been addressed and data transfer has performed correctly it generates a low SDA level (active
pull down). Then SDA line is let free enabling the next transfer (see figure 14).
Figure 12: Timing diagram for I²C start and stop condition (SDI=SDA)
Rev. 1.6
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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.
SDI
SCK
Start condition
S
Triaxial, digital acceleration sensor
Data sheet
BMA150
Page 34
Bosch Sensortec
Stop condition
30 October 2008
P