LIS3LV02DL STMicroelectronics

LIS3LV02DL MEMS inertial sensor 3-axis - 2g/6g digital output low voltage linear accelerometer Features 2.16 V to 3.6 V single supply operation 1.8 V compatible IOs 2 I C/SPI digital output interfaces Programmable 12 or 16 bit data representation LGA-16 Interrupt activated by motion Programmable interrupt threshold The LIS3LV02DL has a user selectable full scale of 2g, 6g and it is capable of measuring Embedded self test acceleration over a bandwidth of 640 Hz for all High shock survivability axes. The device bandwidth may be selected ECOPACK compliant (see Section 9) accordingly to the application requirements. The self-test capability allows the user to check Description the functioning of the device. The device may be also configured to generate an The LIS3LV02DL is a three axes digital output inertial wake-up/free-fall interrupt signal when a linear accelerometer that includes a sensing programmable acceleration threshold is crossed element and an IC interface able to take the at least in one of the three axes. information from the sensing element and to provide the measured acceleration signals to the The LIS3LV02DL is available in plastic SMD 2 external world through an I C/SPI serial interface. package and it is specified over a temperature range extending from -40C to +85C. The sensing element, capable of detecting the acceleration, is manufactured using a dedicated The LIS3LV02DL belongs to a family of products process developed by ST to produce inertial suitable for a variety of applications: sensors and actuators in silicon. Free-Fall detection The IC interface instead is manufactured using a Motion activated functions in portable CMOS process that allows high level of terminals integration to design a dedicated circuit which is Antitheft systems and Inertial navigation factory trimmed to better match the sensing Gaming and virtual reality input devices element characteristics. Vibration monitoring and compensation Table 1. Device summary Operating temperature Order code Package Packing range C LIS3LV02DL -40 to +85 LGA-16 Tray LIS3LV02DLTR -40 to +85 LGA-16 Tape and reel January 2008 Rev 2 1/48 www.st.com 48Content LIS3LV02DL Content 1 Block diagram and pin description . 8 1.1 Block diagram . 8 1.2 LGA-16 pin description 8 2 Mechanical and electrical specifications . 10 2.1 Mechanical characteristics 10 2.2 Electrical characteristics 14 2.3 Communication interface characteristics . 15 2.3.1 SPI - serial peripheral interface . 15 2.3.2 I2C - Inter IC control interface 16 2.4 Absolute maximum ratings 17 2.5 Terminology . 18 2.5.1 Sensitivity 18 2.5.2 Zero-g level 18 2.5.3 Self test . 18 3 Functionality 19 3.1 Sensing element 19 3.2 IC interface 19 3.3 Factory calibration 20 4 Application hints . 21 4.1 Soldering Information 21 5 Digital interfaces . 22 5.1 I2C serial interface 22 5.1.1 I2C operation . 23 5.2 SPI bus interface . 24 5.2.1 SPI read . 25 5.2.2 SPI write 26 5.2.3 SPI Read in 3-wires mode . 27 6 Register mapping 28 2/48