BMA250 Bosch Sensortec, BMA250 Datasheet - Page 42

• Manufacturer Part Number: BMA250
• Description: 3-AXIS ACCELEROMETER DIGITAL I/F
• Manufacturer: Bosch Sensortec
• Series: -r

Specifications of BMA250

• Featured Product: BMA250 - Digital, Triaxial Acceleration Sensor
• 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

5.10 Special control settings
Register (0x12) is reserved.
Register (0x13) contains settings for the configuration of the acceleration data acquisition and
the data output format.
(0x13) data_high_bw = ´0´ (´1´) selects filtered (unfiltered) acceleration data to be written into
the data registers (0x02) to (0x07). Default value of (0x13) data_high_bw is ´0´.
(0x13) shadow_dis = ´0´ (´1´) enables (disables) the shadowing procedure. Shadowing means
that the MSB register is updated by reading the corresponding LSB register. Default value of
(0x13) shadow_dis is ´0´.
Register (0x14) is the softreset register. A user-triggered reset (softreset) of the sensor is
performed after writing ´0xB6´ to the softreset register. After that reset all registers return to their
default values. Reading (0x14) softreset returns 0x00.
Register (0x15) is reserved.
5.11 Interrupt settings
Registers (0x16) and (0x17) contain the enable bits for the interrupts. Default value of each
enable bit is ´0´.
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.
Table 38: Acceleration data acquisition & data output format, register (0x13)
Table 39: Interrupt setting, register (0x16)
Bit 7
(0x16) Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
data_high
_bw
Bit 6
shadow
Name
flat_en
orient_en
s_tap_en
d_tap_en
- reserved -
slope_en_z
slope_en_y
slope_en_x
_dis
Bit 5
reserved
Description
´1´ (´0´) enables (disables) flat interrupt
´1´ (´0´) enables (disables) orientation interrupt
´1´ (´0´) enables (disables) single tap interrupt
´1´ (´0´) enables (disables) double tap interrupt
reserved
´1´ (´0´) enables (disables) slope interrupt for z-axis
´1´ (´0´) enables (disables) slope interrupt for y-axis
´1´ (´0´) enables (disables) slope interrupt for x-axis
Page 42 / not for publishing
Bit 4
reserved
Data sheet
BMA250
Bit 3
reserved
Bit 2
reserved
Bit 1
reserved
Bosch Sensortec
03 March 2011
Bit 0
reserved