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adxl344三轴超低功率数字式MEMS加速度计数据表
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The ADXL344 is a versatile 3-axis， digital-output， low g MEMS accelerometer. Selectable measurement range and bandwidth and configurable， built-in motion detection make it suitable for sensing acceleration in a wide variety of applications. Robustness to 10，000 g of shock and a wide temperature range （−40°C to +85°C） enable use of the accelerometer even in harsh environments. The ADXL344 measures acceleration 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 I2 C digital interface. The ADXL344 can measure 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°。 Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. Orientation detection reports four- and six-position orientation and can trigger an interrupt upon change in orientation. These functions can be mapped individually to either of two interrupt output pins. An integrated memory management system with a 32-level first in， first out （FIFO） buffer can be used to store data to minimize host processor activity and lower overall system power consumption. The ADXL344 is supplied in a small， thin， 3 mm × 3 mm × 0.95 mm， 16-terminal， plastic package.
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