ADXL345 9DOF 3-Axis Accelerometer Module

Description

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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 for mobile device applications. It 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. Other features include:

• Ultralow power: as low as 40 μA in measurement mode and 0.1 μA in standby mode at V_S = 2.5 V (typical)
• Power consumption scales automatically with bandwidth
• User-selectable resolution
  Fixed 10-bit resolution
  Full resolution, where resolution increases with g range, up to 13-bit resolution at ±16 g(maintaining 4 mg/LSB scale factor in all g ranges)
• Embedded, patent pending FIFO technology minimizes host processor load
• Tap/double tap detection
• Activity/inactivity monitoring

For the datasheet, please follow this link: ADXL345

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Package Includes:

1 x ADXL345 3-Axis Accelerometer Module