BMA020 Bosch Sensortec, BMA020 Datasheet - Page 29

• Manufacturer Part Number: BMA020
• Description: 3-AXIS ACCELEROMETER DIGITAL I/F
• Manufacturer: Bosch Sensortec

Specifications of BMA020

• Axis: X, Y, Z
• Acceleration Range: ± 2g, 4g, 8g
• Sensitivity: 256LSB/g, 128LSB/g, 64LSB/g
• Voltage - Supply: 2 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 3kHz
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Package / Case: 12-LGA
• For Use With: 828-1014 - BMA020 TRIBOX DEMO BOARD W/USB828-1008 - BMA020 DAUGHTERCARD FOR DEV KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 828-1000-2

Figure 9: The three wire SPI write protocol is identical to four wire bus
Figure 10: For three wire read protocol one extra clock between address byte and data out byte
is required. Output data are changed on SDI (SDI=SDA) by SCK rising edge and should be
latched by microprocessor during next SCK rising edge.
Rev. 1.2
© 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.
CSB
SCK
SDI
CSB
SCK
SDI
RW
RW
7
AD6
AD6
6
AD5
AD5
5
AD4
AD4
Digital, triaxial acceleration sensor
4
AD3
AD3
3
AD2
AD2
2
Data sheet
AD1
AD1
BMA020
Page 29
1
AD0
AD0
0
DI7
extra clock
*
DO7
DI6
7
DO6
DI5
6
DO5 DO4 DO3 DO2 DO1 DO0
DI4
5
DI3
4
DI2
3
Bosch Sensortec
DI1
2
DI0
30 May 2008
1
0