3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part NumberBMA250
Description3-AXIS ACCELEROMETER DIGITAL I/F
ManufacturerBosch Sensortec
Series-
BMA250 datasheets
 

Specifications of BMA250

Featured ProductBMA250 - Digital, Triaxial Acceleration SensorAxisX, Y, Z
Acceleration Range±2g, 4g, 8g, 16gSensitivity256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply1.62 V ~ 3.6 VOutput TypeI²C™, SPI™
Bandwidth8Hz ~ 1kHzInterfaceI²C, SPI
Mounting TypeSurface MountPackage / Case12-VQFN
Lead Free Status / Rohs StatusLead free / RoHS CompliantFor Use With828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names828-1023-2  
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Page 42/74

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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´.
Table 38: Acceleration data acquisition & data output format, register (0x13)
Bit 7
Bit 6
Bit 5
data_high
shadow
reserved
_bw
_dis
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´.
Table 39: Interrupt setting, register (0x16)
(0x16) Bit
Name
Bit 7
flat_en
Bit 6
orient_en
Bit 5
s_tap_en
Bit 4
d_tap_en
Bit 3
- reserved -
Bit 2
slope_en_z
Bit 1
slope_en_y
Bit 0
slope_en_x
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.
BMA250
Data sheet
Bit 4
Bit 3
Bit 2
reserved
reserved
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
Bosch Sensortec
Bit 1
Bit 0
reserved
reserved
03 March 2011