ADXL345 Application Note

●The ADXL345 is a small, thin, ultralow 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 (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°.

● Power consumption scales automatically with bandwidth

● User-selectable resolution

● Patent pending, embedded memory management system with FIFO technology minimises host processor load

● Single tap/double tap detection

● Activity/inactivity monitoring

● Free-fall detection

● SPI (3- and 4-wire) and I2C digital interfaces

● Flexible interrupt modes map able to either interrupt pin

● Measurement ranges selectable via serial command

● 10,000 g shock survival

● Bandwidth selectable via serial command