FXOS8700CQ datasheet(42/86 Pages) FREESCALE

42 / 86 page

Sensors

Freescale Semiconductor, Inc.

Please note that when the part is operated in hybrid mode, the ODR is reduced by a factor of two, which also affects the filter

cutoff frequency. For example, an ODR setting of 400 Hz in accelerometer only mode with HP_FILTER_CUTOFF[sel] = 0b10

sets the cutoff frequency at 4 Hz. If the part is operated in Hybrid mode, the effective ODR becomes 200 Hz and the cutoff

frequency is now 2 Hz for the same ODR and HP_FILTER_CUTOFF[sel] settings.

9.8

Portrait/Landscape Detection

The FXOS8700CQ is capable of detecting six orientations: Landscape Left, Landscape Right, Portrait Up, and Portrait Down with

Z-lockout feature as well as Face Up and Face Down orientation as shown in Figures 36, 37 and 38. For more details on the

meaning of the different user configurable settings and for example code, please refer to Freescale application note AN4068.

Figure 36. Illustration of Z-tilt angle lockout transition

Figure 37. Illustration of landscape to portrait transition

12.5

0.5

0.125

0.063

0.25

0.063

0.031

6.25

0.5

0.063

0.031

0.25

0.031

0.016

1.56

0.5

0.016

0.008

0.25

0.008

0.004

Table 38. HP_FILTER_CUTOFF

NORMAL

Z-LOCK = 32.142°

0°

DETECTION

LOCKOUT

REGION

Portrait

Landscape to Portrait

Trip Angle = 60

0° Landscape

FXOS8700CQ Datasheet(PDF) 42 Page - Freescale Semiconductor, Inc

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