BMA250 Bosch Sensortec, BMA250 Datasheet - Page 23
Manufacturer Part Number
3-AXIS ACCELEROMETER DIGITAL I/F
Specifications of BMA250
BMA250 - Digital, Triaxial Acceleration Sensor
X, Y, Z
±2g, 4g, 8g, 16g
256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply
1.62 V ~ 3.6 V
8Hz ~ 1kHz
Package / Case
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With
828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
All time constants are based upon the typical frequency of the internal oscillator. This is
reflected by the bandwidths (bw) as specified in table 1.
4.8.1 General features
An interrupt is cleared depending on the selected interrupt mode, which is common to all
interrupts. There are three different interrupt modes: non-latched, latched, and temporary. The
mode is selected by the (0x21) latch_int bits according to table 14
An interrupt is generated if its activation condition is met. It can not be cleared as long as the
activation condition is fulfilled. In the non-latched mode the interrupt status bit and the selected
pin (the contribution to the ´or´ condition for INT1 and/or INT2) are cleared as soon as the
activation condition is no more valid. Exceptions to this behaviour are the new data, orientation,
and flat interrupts, which are automatically reset after a fixed time.
In the latched mode an asserted interrupt status and the selected pin are cleared by writing ´1´
to bit (0x21) reset_int. If the activation condition still holds when it is cleared, the interrupt status
is asserted again with the next change of the acceleration registers.
In the temporary mode an asserted interrupt and selected pin are cleared after a defined period
of time. The behaviour of the different interrupt modes is shown graphically in figure 5:
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Note: Specifications within this document are subject to change without notice.
Table 14: Interrupt mode selection
Page 23 / not for publishing
03 March 2011