LIS2DW12TR Motion Sensor: Datasheet, Pinout, Application Hint

LIS2DW12TR Pinout

Symbol

LIS2DW12TR Symbol

Footprint

LIS2DW12TR Footprint

3D Model

LIS2DW12TR 3D Model

The LIS2DW12TR  is an ultra-low-power high-performance three-axis linear accelerometer belonging to the “femto” family which leverages the robust and mature manufacturing processes already used for the production of micromachined accelerometers. The LIS2DW12TR  has user-selectable full scales of ±2g/±4g/±8g/±16g and is capable of measuring accelerations with output data rates from 1.6 Hz to 1600 Hz.
The LIS2DW12TR  has an integrated 32-level first-in, first-out (FIFO) buffer allowing the user to store data in order to limit intervention by the host processor.
The embedded self-test capability allows the user to check the functioning of the sensor in the final application.
The LIS2DW12TR  has a dedicated internal engine to process motion and acceleration detection including free-fall, wakeup, highly configurable single/double-tap recognition, activity/inactivity, stationary/motion detection, portrait/landscape detection and 6D/4D orientation.
The LIS2DW12TR  is available in a small thin plastic land grid array package (LGA) and it is guaranteed to operate over an extended temperature range from -40°C to +85°C.

• Ultra-low power consumption: 50 nA in power-down mode, below 1 µA in active low-power mode
• Very low noise: down to 1.3 mg RMS in low-power mode
• Multiple operating modes with multiple bandwidths
•  Android  stationary detection, motion detection
• Supply voltage, 1.62 V to 3.6 V
• Independent IO supply
• ±2g/±4g/±8g/±16g full scale
• High-speed I²C/SPI digital output interface
• Single data conversion on demand
• 16-bit data output
• Embedded temperature sensor
• Self-test
• 32-level FIFO
• 10000 g high shock survivability
• ECOPACK,  RoHS  and “Green” compliant

• Motion detection for wearables 

• Gesture recognition and gaming 

• Motion-activated functions and user interfaces 

• Display orientation 

• Tap/double-tap recognition 

• Free-fall detection 

• Smart power saving for handheld devices 

• Hearing aids 

• Portable healthcare devices 

• Wireless sensor nodes 

• Motion-enabled metering devices

The following figure shows the block diagram of LIS2DW12TR

LIS2DW12TR Block Diagram

The Vdd line provides power to the device core, while the Vdd IO line provides power to the I/O pads. Decoupling capacitors for the power supply (100 nF ceramic, 10 fF aluminium) should be put as close to pin 9 of the device as practicable (common design practice).

To ensure optimal IC behaviour, all voltage and ground supplies must be present at the same time (see the LIS2DW12TR electrical connections (top view) diagram below). Without stopping the communication bus, it is feasible to delete Vdd while keeping Vdd IO; in this case, the measurement chain is turned off.

LIS2DW12 electrical connections (top view)

The device's functionality as well as the measured acceleration data can be selected and accessed via the I2C or SPI interfaces. CS must be tied high (i.e. attached to Vdd IO) while utilizing I2C.

The user can entirely configure the functions, threshold, and timing of the two interrupt pins (INT1 and INT2) using the I2C/SPI interface.

STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of  System-on-Chip  (SoC) technology and its products play a key role in enabling today's convergence trends.

STMicroelectronics LIS2DW12TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LIS2DW12TR.