MC3253 Datasheet, PDF (24/72 Pages) List of Unclassifed Manufacturers – Axis Accelerometer

MC3253 3-Axis Accelerometer
Preliminary Datasheet
Default UD_Z_TH ≈ 33º
(Up/Down Arc radius)
Default UD_X_TH ≈ 45º
POLA =
UP
-X
Default RL_Y_TH ≈ 45º
Default UD_Z_TH ≈ 33º
(Up/Down Arc radius)
UD_X_TH ≈ 40º
POLA =
UP
Hysteresis ≈ 10º
-X
RL_Y_TH ≈ 40º
POLA = +Y
LEFT
POLA = UNKNOWN
in shaded region
-Y POLA =
RIGHT
POLA = +Y
LEFT
POLA = UNKNOWN
in shaded regions
-Y POLA =
RIGHT
Default RL_Z_TH ≈ 33º
(Left/Right Arc radius)
+X
POLA =
DOWN
Default RL_Z_TH ≈ 33º
(Left/Right Arc radius)
+X
POLA =
DOWN
Figure 6. Default Orientation Settings
Figure 7. Example Simple Orientation Hysteresis =
10 degrees
The Z threshold for each direction can also be adjusted, as shown in Figure 8. This has the
effect of altering the angle relative to the Z axis which causes the orientation state to change.
Figure 9 shows an example of setting the UD_Z_TH and RL_Z_TH registers to different
values, as well as setting the UD_X_TH and RL_Y_TH registers to different values. However
for most applications the same value should be written to both registers in both cases.
mCube Proprietary.
APS-048-0026v1.2
© 2014 mCube Inc. All rights reserved.
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