Members of STMicroelectronics’ LIS331 generation of three-axis linear accelerometers are MEMS devices that provide complete output flexibility and embedded smart features. Housed in a 3 mm x 3 mm x 0.9 mm plastic package, the accelerometers deliver high performance at low power consumption. They also feature vibration and shock survivability up to 10,000 g. Click and double-click recognition allows designers to associate simple tapping gestures with user commands, such as turning a portable device on or off, opening a document, browsing an application menu, or muting a ringing mobile phone without taking it from the pocket.

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ST’s LIS331DL integrates a standard SPI/I²C digital interface, as well as high-pass filters, and two dedicated highly programmable interrupt lines. The analog-output LIS331AL provides individual acceleration values for all three axes. This version also provides a full-scale output range of ±2.0 g, high temperature stability and tight offset tolerances. Furthermore, it incorporates built-in self-test capability that allows the customer to verify the functioning of the sensor after the host application has been assembled. Samples of both devices are available now, with volume production starting in the fourth quarter. Unit pricing for both devices is below $1.50 in OEM quantities.