LIS3DETR

LIS3DE MEMS digital output motion sensor: ultra-low-power high-performance 3-axisnan accelerometer Datasheet - production data Intelligent power saving for handheld devices Pedometers Display orientation Gaming and virtual reality input devices Impact recognition and logging LGA-16 (3x3x1 mm) Vibration monitoring and compensation Features Description Wide supply voltage, 1.71 V to 3.6 V The LIS3DE is an ultra-low-power high- performance 3-axis linear accelerometer Independent IO supply (1.8 V) and supply 2 belonging to the nano family, with digital I C/SPI voltage compatible serial interface standard output. The device Ultra-low-power mode consumption down to features ultra-low-power operational modes that 2 A allow advanced power saving and smart 2g/4g/8g/16g dynamically selectable full embedded functions. scales The LIS3DE has dynamically user-selectable full 2 I C/SPI digital output interface scales of 2g/4g/8g/16g and is capable of measuring accelerations with output data rates 8-bit data output from 1 Hz to 5 kHz. The self-test capability allows 2 independent programmable interrupt the user to check the functioning of the sensor in generators for free-fall and motion detection the final application. The device may be 6D/4D orientation detection configured to generate interrupt signals by two independent inertial wakeup/free-fall events as Sleep-to-wake and Return-to-sleep well as by the position of the device itself. functions Thresholds and the timing of interrupt generators Free-fall detection are programmable by the end user on the fly. The Motion detection LIS3DE has an integrated 32-level first-in, first-out (FIFO) buffer allowing the user to store data in Embedded temperature sensor order to limit intervention by the host processor. Embedded self-test The LIS3DE is available in a small thin plastic Embedded FIFO land grid array package (LGA) and it is guaranteed to operate over an extended 10000 g high shock survivability temperature range from -40 C to +85 C. ECOPACK , RoHS and Green compliant Table 1. Device summary Applications Temp. Order codes Package Packaging range C Motion-activated functions Free-fall detection LIS3DE -40 to +85 LGA-16 Tray Click/double-click recognition LIS3DETR -40 to +85 LGA-16 Tape and reel June 2014 DocID023719 Rev 3 1/46 This is information on a product in full production. www.st.comContents LIS3DE Contents 1 Block diagram and pin description . 8 1.1 Block diagram . 8 1.2 Pin description 8 2 Mechanical and electrical specifications . 10 2.1 Mechanical characteristics 10 2.2 Temperature sensor characteristics . 11 2.3 Electrical characteristics 11 2.4 Communication interface characteristics . 12 2.4.1 SPI - serial peripheral interface . 12 2 2.4.2 I C - inter-IC control interface 13 2.5 Absolute maximum ratings 14 3 Terminology and functionality 15 3.1 Terminology . 15 3.1.1 Sensitivity 15 3.1.2 Zero-g level 15 3.2 Functionality . 15 3.2.1 Normal mode, low-power mode . 15 3.2.2 Self-test . 15 3.2.3 6D / 4D orientation detection . 16 3.2.4 Sleep-to-wake and return-to-sleep functions . 16 3.3 Sensing element 16 3.4 IC interface 17 3.5 Factory calibration 17 3.6 FIFO . 17 3.7 Auxiliary ADC 17 3.8 Temperature sensor . 17 4 Application hints . 18 4.1 Soldering information 18 5 Digital main blocks . 19 2/46 DocID023719 Rev 3