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