3-axis accelerometer, ±2g to ±16g. I2C/SPI, tap and freefall detection.
| Pin | Name | Function | Type |
|---|---|---|---|
| VCC | VCC | 2V–3.6V supply | PWR |
| GND | GND | Ground | GND |
| CS | CS | SPI chip select, high for I2C | I/O |
| INT1 | INT1 | Interrupt 1 output | I/O |
| INT2 | INT2 | Interrupt 2 output | I/O |
| SDO/ALT | SDO | SPI MISO, I2C address select | BUS |
| SDA/SDI | SDA | I2C data, SPI MOSI | BUS |
| SCL/SCLK | SCL | I2C/SPI clock | BUS |
The ADXL345 is a 3-axis MEMS accelerometer with selectable measurement ranges of ±2g to ±16g, 13-bit resolution, and both I2C and SPI interfaces. Features tap, double-tap, and free-fall detection interrupts.