CMA3000-D0X Datasheet, PDF (7/35 Pages) VTI technologies – 3-axis accelerometer

1.2.7 Operational flow chart
CMA3000 power down mode can
be activated via SPI/I²C bus
CMA3000 operation mode can be
changed via SPI/I²C bus
CMA3000 power up
CMA3000 in
power down mode
Activate CMA3000 operation
mode via SPI/I²C bus
CMA3000-D0X Series
Measurement mode
Low pass filtered XYZ acceleration
data available
Ranges and data rates:
2g: 400Hz, 100Hz
8g: 400Hz, 100Hz, 40Hz
INT-pin gives interrupt when
new data is available
Additional configuration option:
• INT-pin data ready functionality can
be disabled
Free fall mode
Low pass filtered XYZ acceleration
data available
Ranges and data rates:
2g: 400Hz, 100Hz
8g: 400Hz, 100Hz
INT-pin gives interrupt when
free fall is detected
Additional configuration option:
• Free fall trigger conditions can be
configured (time & acceleration)
Motion detection mode
Band pass filtered XYZ acceleration
data available
Ranges and data rates:
8g: 10Hz
INT-pin gives interrupt when
motion is detected
Additional configuration option:
• Motion detection trigger conditions
can be configured (time &
acceleration)
• CMA3000 can be configured to
switch to measurement mode with
400Hz output data rate after motion
is detected
CMA3000 operation in application
Figure 2. CMA3000 operational flow chart.
VTI Technologies Oy
www.vti.fi
Doc.Nr. 8281000.12
7/ 35
Rev. 0.12