Triple Axis Accelerometer Breakout - ADXL345
Description: This new version adds 2 standoff holes as well as
an extra decoupling capacitor. The ADXL345 is a small, thin, low power,
3-axis accelerometer with high resolution (13-bit) measurement at up to
±16 g. Digital output data is formatted as 16-bit twos complement and is
accessible through either a SPI (3- or 4-wire) or I2C digital
interface.
The ADXL345 is well suited to measures the static acceleration of
gravity in tilt-sensing applications, as well as dynamic acceleration
resulting from motion or shock. Its high resolution (4 mg/LSB) enables
measurement of inclination changes less than 1.0°.
Several special sensing functions are provided. Activity and inactivity
sensing detect the presence or lack of motion and if the acceleration
on any axis exceeds a user-set level. Tap sensing detects single and
double taps. Free-fall sensing detects if the device is falling. These
functions can be mapped to one of two interrupt output pins. An
integrated, patent pending 32-level first in, first out (FIFO) buffer
can be used to store data to minimize host processor intervention. Low
power modes enable intelligent motion-based power management with
threshold sensing and active acceleration measurement at extremely low
power dissipation.
Features:
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2.0-3.6VDC Supply Voltage
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Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
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Tap/Double Tap Detection
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Free-Fall Detection
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SPI and I2C interfaces
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