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 44/74

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Table 43: Interrupt mapping, register (0x1B)
(0x1B) Bit
Name
Bit 7
int2_flat
Bit 6
int2_orient
Bit 5
int2_s_tap
Bit 4
int2_d_tap
Bit 3
- reserved -
Bit 2
int2_slope
Bit 1
int2_high
Bit 0
int2_low
Registers (0x1C) and (0x1D) are reserved.
Register (0x1E) contains the data source definition for those interrupts with selectable data
source. Default value of each data source selection bit is ´0´.
Table 44: Interrupt data source definition, register (0x1E)
(0x1E) Bit
Name
Bit 7
- reserved -
Bit 6
- reserved -
Bit 5
int_src_data
Bit 4
int_src_tap
Bit 3
- reserved -
Bit 2
int_src_slope
Bit 1
int_src_high
Bit 0
int_src_low
Register (0x1F) is reserved.
Register (0x20) contains the behavioural configuration (electrical behaviour) of the interrupt
pins. Default value of (0x20) int1_od and (0x20) int2_od is ´0´. Default value of (0x20) int1_lvl
and (0x20) int2_lvl is ´1´.
Table 45: Electrical behaviour of interrupt pin, register (0x20)
(0x20) Bit
Name
Bit 7
- reserved -
Bit 6
- reserved -
Bit 5
- reserved -
Bit 4
- reserved -
Bit 3
int2_od
Bit 2
int2_lvl
Bit 1
int1_od
Bit 0
int1_lvl
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
Description
´1´ (´0´) maps (unmaps) flat interrupt to INT2 pin
´1´ (´0´) maps (unmaps) orientation interrupt to INT2 pin
´1´ (´0´) maps (unmaps) single tap interrupt to INT2 pin
´1´ (´0´) maps (unmaps) double tap interrupt to INT2 pin
reserved
´1´ (´0´) maps (unmaps) slope interrupt to INT2 pin
´1´ (´0´) maps (unmaps) high-g interrupt to INT2 pin
´1´ (´0´) maps (unmaps) low-g interrupt to INT2 pin
Description
reserved
reserved
´1´ (´0´) selects unfiltered (filtered) data for the new data
interrupt
´1´ (´0´) selects unfiltered (filtered) data for the single tap and
double tap interrupts
reserved
´1´ (´0´) selects unfiltered (filtered) data for the slope interrupt
´1´ (´0´) selects unfiltered (filtered) data for the high-g interrupt
´1´ (´0´) selects unfiltered (filtered) data for the low-g interrupt
Description
reserved
reserved
reserved
reserved
´0´ selects push-pull, ´1´ selects open drive for INT2 pin
´0´ (´1´) selects active level ´0´ (´1´) for INT2 pin
´0´ selects push-pull, ´1´ selects open drive for INT1
´0´ (´1´) selects active level ´0´ (´1´) for INT1 pin
Page 44 / not for publishing
Bosch Sensortec
03 March 2011