FXLS8471Q Datasheet, PDF (24/75 Pages) Freescale Semiconductor, Inc – Linear Accelerometer

8.8 Orientation detection
FXLS8471Q has an embedded orientation detection algorithm with the ability to detect all six orientations. The transition angles
and hysteresis are programmable, allowing for a smooth transition between portrait and landscape orientations.
The angle at which the device no longer detects the orientation change is referred to as the “Z-lockout angle”. The device operates
down to 29° from the flat position. All angles are accurate to ±2°.
For further information on the orientation detection function refer to Freescale application note, AN4068.
8.9 Acceleration Vector-Magnitude detection
FXLS8471Q incorporates an acceleration vector-magnitude change detection block that can be configured to generate an
interrupt when the acceleration magnitude exceeds a preset threshold for a programmed debounce time. The function can be
configured to operate in absolute or relative modes, and can also act as a wake to sleep/sleep to wake source. This function is
useful for detecting acceleration transients when operated in absolute mode, or for detecting changes in orientation when
operated in relative mode, refer to Freescale application note AN4692.
FXLS8471Q
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Sensors
Freescale Semiconductor, Inc.