1,On-board ADXL345 digital output (support I2C/SPI), low power consumption, compact accelerometer;
2,Support 5V/3.3V voltage input, onboard RT9161 power supply chip, lower voltage drop than 1117, faster load response speed, ideal for high noise power environment.
Faster load corresponding speed, very suitable for high noise power supply environment;
3, commonly used pins have been pinned out, the pin for the standard 100mil (2.54mm), easy to use for dot-matrix boards;
4, PCB board double-sided gold-plated, size: 28 (mm) x 14 (mm)

FEATURES:
Ultralow power: as low as 23 μA in measurement mode and 0.1 μA in standby mode at VS = 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)
with FIFO technology minimizes host processor load
Single tap/double tap detection
Activity/inactivity monitoring
Free-fall detection

Supply voltage range: 2.0 V to 3.6 V
I/O voltage range: 1.7 V to VS SPI (3- and 4-wire) and I2C digital interfaces
Flexible interrupt modes mappable to either interrupt pin
Measurement ranges selectable via serial command
Bandwidth selectable via serial command
Wide temperature range (−40°C to +85°C)
10,000 g shock survival

GENERAL DESCRIPTION
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.