LIS2DWTR STMicroelectronics

LIS2DW MEMS digital output motion sensor: high-performance, ultra-low-power 3-axisfemt accelerometer Datasheet - production data Hearing aids Portable healthcare devices /* PP Wireless sensor nodes Motion-enabled metering devices Features Description Ultra-low power consumption: 50 nA in power- The LIS2DW is an ultra-low-power, high down mode, below 1 A in active low-power performance three-axis linear accelerometer mode belonging to the femto family which leverages on the robust and mature manufacturing Very low noise: down to 1.3 mg RMS in low- processes already used for the production of power mode micromachined accelerometers. Multiple operating modes with multiple The LIS2DW has user-selectable full scales of bandwidths 2g/4g/8g/16g and is capable of measuring Android stationary detection, motion detection accelerations with output data rates from 1.6 Hz Supply voltage, 1.62 V to 3.6 V to 1600 Hz. Independent IO supply The LIS2DW has an integrated 32-level first-in, 2g/4g/8g/16g full scale first-out (FIFO) buffer allowing the user to store data in order to limit intervention by the host High-speed IC/SPI digital output interface processor. Single data conversion on demand The embedded self-test capability allows the user 16-bit data output to check the functioning of the sensor in the final Embedded temperature sensor application. Self-test The LIS2DW has a dedicated internal engine to 32-level FIFO process motion and acceleration detection including free-fall, wakeup, highly configurable 10000 g high shock survivability single/double-tap recognition, activity/inactivity, ECOPACK, RoHS and Green compliant stationary/motion detection, portrait/landscape detection and 6D/4D orientation. Applications The LIS2DW is available in a small thin plastic land grid array package (LGA) and it is Motion detection for wearables guaranteed to operate over an extended Gesture recognition and gaming temperature range from -40 C to +85 C. Motion-activated functions and user interfaces Table 1. Device summary Display orientation Order codes Temp. range C Package Packaging Tap/double-tap recognition LIS2DW -40 to +85 LGA-14 Tray Free-fall detection Smart power saving for handheld devices LIS2DWTR -40 to +85 LGA-14 Tape and reel April 2020 DocID029686 Rev 2 1/63 This is information on a product in full production. www.st.comContents LIS2DW Contents 1 Block diagram and pin description . 8 1.1 Block diagram . 8 1.2 Pin description 9 2 Mechanical and electrical specifications . 11 2.1 Mechanical characteristics .11 2.2 Electrical characteristics 13 2.3 Temperature sensor characteristics . 14 2.4 Communication interface characteristics . 15 2.4.1 SPI - serial peripheral interface . 15 2.4.2 IC - inter-IC control interface 16 2.5 Absolute maximum ratings 18 3 Terminology and functionality 19 3.1 Terminology . 19 3.1.1 Sensitivity 19 3.1.2 Zero-g level offset . 19 3.2 Functionality . 20 3.2.1 Operating modes 20 3.2.2 Single data conversion on demand mode . 21 3.2.3 Self-test . 22 3.2.4 Activity/Inactivity, Android stationary/motion detection functions 23 3.2.5 High tap/double-tap user configurability . 23 3.2.6 Offset management 23 3.3 Sensing element 24 3.4 IC interface 24 3.5 Factory calibration 24 3.6 Temperature sensor . 24 4 Application hints . 25 5 Digital main blocks . 27 5.1 Block diagram of filters . 27 2/63 DocID029686 Rev 2