freefall distance is about 122.5 meters, which rarely happens to a handheld
• When the handheld device is at rest at any tilted position for longer
than 5 seconds, accelerometer INT1 pin will go high from low and stay
high as long as the device is still at rest, because after HPF, X/Y/Z axes acceleration are all within ±125mg THS simultaneously.
• The freefall of the handheld device will not make the INT1 pin go high
from low because the event of X/Y/Z axes acceleration within ±125mg
THS simultaneously doesn’t last longer than 5 seconds.
• Whenever any axis X or Y or Z acceleration goes beyond ±125mg THS
due to the motion, the INT1 pin will go low from high and stay low as
long as the device is still in motion.
• If the device is at rest for the time shorter than 5 seconds duration and
the motion happens again, then the INT1 pin will still stay low and the 5
seconds duration will start counting down from 50LSBs to 0LSB at 10Hz
ODR once the device is at rest again.
By using built-in HPF and freefall event detection scheme, the accelerometer delivers robust interrupt signal for wakeup and motionless to the
microprocessor from its one interrupt pin. The accelerometer works in
the background and doesn’t need the microprocessor involved. Users are
free to configure the accelerometer threshold and duration to meet their
needs. In terms of power saving, this is more effective than a handheld
device touch screen and button press and microprocessor timer to switch
off the screen.
Two Component EP21TCHT-1
ì Electrically insulative
ì Cures at room temperature
ì NASA low outgassing approved
ì Halogen free
ì High/low temperature resistant
154 Hobart Street, Hackensack, NJ 07601 USA
CONSISTENT AND RELIABLE
Uneven mating surfaces, floating height requirements, and
exposure to extreme vibration all challenge the integrity of
electrical connections. Field proven for performance and
reliability in harsh environments, Mill-Max spring-loaded
contacts ensure continuity across a wide variety of length
and stroke configurations, including new low and ultra-low
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and custom designs are our specialty.
Mill-Max Mfg. Corp.