BMA150 Bosch Sensortec, BMA150 Datasheet - Page 29
BMA150
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
828-1003-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BMA150
Manufacturer:
BOSCH
Quantity:
5 888
Part Number:
BMA150
Manufacturer:
BOSCH/博世
Quantity:
20 000
4.1.2 Three-wire SPI interface
3-wire SPI is not the default serial interface. The customer can easily activate the 3-wire SPI by
setting a control bit (SPI4=0). The 3-wire SPI interface uses SCK (serial clock), CSB (chip
select, active low) and SDA (serial data in/out). A maximum clock frequency up to 70MHz can
be handled.
The protocol data acquisition by the sensor IC occurs at the rising edge of SCK. The output data
provided by the sensor IC is synchronized also on the rising edges of SCK. The 3-wire read
protocol needs one extra clock cycle between address byte and data output byte.
Figure 8: Timing diagram for three-wire SPI interface (SDI = SDA)
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.
CSB
SCK
SDI
T_setup_csb_3
7
r
T_high_sck_3
6
A6
5
A5
4
A4
T_low_sck_3
Triaxial, digital acceleration sensor
3
A3
A2
2
1
A1
Data sheet
BMA150
T_delay_sdi_3
Page 29
A0
0
T_delay_sdi_3
Xtra
7
D7
T_setup_sdi_3
6
D6
T_hold_sdi_3
5
D5
4
D4
3
D3
Bosch Sensortec
2
D2
30 October 2008
1
D1
T_hold_csb_3
D0
0