ADI ADXL344ACCZ-RL

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 10,000g of shock and a wide temperature range (- 40℃ to +85℃) enable use of the accelerometer even in harsh environments. The ADXL344 measures acceleration with high resolution (13- bit) measurement at up to ±16g 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 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 (3.9mg / 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, 3mm×3mm×0.95mm 16- terminal, plastic package.

• Multipurpose accelerometer with 10- to 13- bit resolution for use in a wide variety of applications
• Digital output accessible via SPI (3- and 4- wire) and I2C
• Built- in motion detection features make tap, double- tap, activity, inactivity, orientation, and free- fall detection trivial
• User- adjustable thresholds
• Interrupts independently mappable to two interrupt pins
• Low power operation down to 23μA and embedded FIFO for reducing overall system power
• Wide supply and I/O voltage range: 1.7V to 2.75V
• Wide operating temperature range (- 40℃ to +85℃)
• 10,000 g shock survival
• Small, thin Pb free, RoHS compliant 3mm×3mm×0.95mm LGA package

• Handsets
• Gaming and pointing devices
• Hard disk drive (HDD) protection