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1. Describe
The ADXL345BCCZ-RL is a small, thin, ultra-low power 3-axis accelerometer with high resolution (13-bit) measurements up to ±16 g. The digital output data is in 16-bit two's complement format and can be accessed via SPI (3-wire or 4-wire) or I2C digital interface. The ADXL345 is ideal for mobile device applications. it Measure static gravitational acceleration in tilt-sensing applications, as well as dynamic acceleration due to motion or shocked. Its high resolution (3.9 mg/LSB) enables measurement Inclination changes less than 1.0°. Several special sensing functions are provided. activities and Inactivity sensing detects the presence or absence of motion by Compare the acceleration on any axis to a user-set threshold. Click sensing detects single and double clicks in any direction. Free fall sensing detects if the device is falling. These functions can Mapped to either of the two interrupt output pins, respectively. With 32-level advanced integrated memory management system, A first-out (FIFO) buffer can be used to store data to minimize host processor activity and reduce overall system power consumption. Low-power modes enable motion-based smart power Managed with threshold sensing and active acceleration Measure with extremely low power consumption. The ADXL345 features a small, thin, 3 mm × 5 mm × 1 mm, 14-pin, plastic package.
2. FEATURES
1. 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
2. User-selectable resolution Fixed 10-bit resolution Full resolution, where resolution increases with g range, up to 13-bit resolution at ±16 g
3. Embedded memory management system with FIFO
4. technology minimizes host processor load
5. Single tap/double tap detection
6. Activity/inactivity monitoring
7. Free-fall detection
8. Supply voltage range: 2.0 V to 3.6 V
9. I/O voltage range: 1.7 V to VS
10. SPI (3- and 4-wire) and I2C digital interfaces
11. Flexible interrupt modes mappable to either interrupt pin
12. Measurement ranges selectable via serial command
13. Bandwidth selectable via serial command
14. Wide temperature range (−40°C to +85°C)
3. APPLICATIONS
1. Handsets
2. Medical instrumentation
3. Gaming and pointing devices
4. Industrial instrumentation
5. Personal navigation devices
6. Hard disk drive (HDD) protection
4. PIN CONFIGURATION
5. FUNCTION DESCRIPTIONS
