Ultra-compact 3-axis accelerometer with embedded microcontroller: Advanced motion-recognition capabilities, sensor hub

January 23, 2013

STMicroelectronics, a global semiconductor leader serving customers across the spectrum of electronics applications and the world's top manufacturer of MEMS (Micro-Electro-Mechanical Systems), today announced details of a miniature smart sensor that combines a 3-axis accelerometer with an embedded microcontroller together in an ultra-compact 3x3x1mm LGA package for advanced custom motion-recognition capabilities.

ST has combined the microcontroller, operating as a sensor hub that runs sensor-fusion algorithms, and a high-precision 3-axis digital accelerometer into a single package it calls iNEMO-A. The device reduces the demand on the host controller and and decreases in portable devices. Both benefits deliver greater freedom and flexibility to the design of motion-enabled consumer electronics. The integration of high-resolution linear-motion sensing and the sensor hub in a single package increases system robustness and is ideally suited for board-layout optimization.

"Customers want smarter that integrate both sensing and intelligent decision making in a single package," said Fabio Pasolini, STMicroelectronics General Manager, Motion MEMS Division, Analog, MEMS and Sensors Group, Industrial and Multisegment Sector. "The iNEMO family gives ST an unrivalled ability to integrate any combination of accelerometers, gyroscopes, magnetometers and other sensors with a powerful ARM-based sensor-hub microcontroller to give our customers the maximum flexibility and scalability in system partitioning."

The LIS331EB iNEMO-A smart sensor targets a wide range of applications that include wearable sensor applications, motion-activated user interfaces in phones and tablets, and augmented reality. The device embeds an ultra-low-power ARM Cortex-M0 with functional capability, power consumption and memory size that is perfectly suited for sensor-hub applications and iNEMO sensor fusion on mobile applications. The sensor hub supports the connection of a 3-axis gyroscope, 3-axis magnetometer and a pressure sensor to deliver a full sensor-fusion solution. Additional sensors, such as temperature and humidity , may also be connected.

Addressing power constraints in battery-operated portable devices, the LIS331EB iNEMO-A 3-axis digital accelerometer also contains two embedded finite state machines (FSM) and an embedded FIFO (first-in first-out). The FSM and FIFO enable custom motion-recognition detection, including specific gesture detection, and a pedometer that can run without using the embedded microcontroller, further reducing the overall power consumption. The FSM can also be used to wake up the microcontroller, enabling advanced power management techniques.

The high performance 3-axis accelerometer in the LIS331EB iNEMO-A features a selectable full-scale range of ±2g/±4g/±8g/±16g and houses an ultra-low-power ARM Cortex-M0 core with 64KB Flash Memory and 128KB RAM memory, as well as multiple timers and I/O ports (GPIOs/SPI/I2C/UART).

The LIS331EB smart motion sensor will start sampling in Q2 2013. Unit pricing is US$2.4 for volumes in the range of 1,000 pieces. If your company has a high-volume need, please contact your ST sales office.

Explore further: HP Enables Better, Faster Decision Making with Breakthrough Sensing Technology

More information: For further information on ST's complete MEMS portfolio see www.st.com/mems .

Related Stories

Omron sensor can do security and hot-soup checks (w/ Video)

July 15, 2012

(Phys.org) -- Japan-based Omron is promoting its small-sized thermal area sensor with a flexible future of use as a security system check, energy-saver or smartphone companion, to warn you that your turkey broth is still ...

Recommended for you

Robo-whiskers mimic animals exploring their surroundings

August 4, 2015

Many mammals, including seals and rats, rely on their whiskers to sense their way through dark environments. Inspired by these animals, scientists working at the University of Illinois at Urbana-Champaign and Illinois' Advanced ...

Thunderstrike 2: Proof-of-concept worm could infect Macs

August 4, 2015

Two researchers, Xeno Kovah co-founder of LegbaCore and Trammell Hudson, a security engineer with Two Sigma Investments, have created a proof of concept worm capable of attacking Mac computers. The worm which they designed ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.