The inertial measurement unit (IMU), supporting a new level of automation for smart driving, enables high-speed real-time response and sophisticated functions through a machine learning core at low system power requirements.

STMicroelectronics (hereinafter ST) announced on the 7th that it has released the ASM330LHHX inertial IMU with a built-in machine learning core.

The ASM330LHHX, which has received automotive component quality certification, utilizes ST's MEMS (Micro-Electro-Mechanical System) technology. Measuring 2.5mm x 3mm x 0.83mm, it incorporates a 3-axis accelerometer and a 3-axis gyroscope. This 6-axis module provides motion and attitude detection for functions such as vehicle positioning and digital attitude control.

ST explained that the machine learning core, a hardware-embedded processing engine, significantly reduces the latency between event detection and the vehicle's response by executing AI algorithms directly on the sensors. This enables sophisticated real-time performance with significantly lower system energy and computing power than solutions embedded in application processors or cloud-based AI.

Application development can be simplified through demo boards and free software example libraries. Supported features include vehicle stationary detection, attitude and direction of travel reference, altitude prediction, vehicle traction detection, and collision detection.

The ASM330LHHX has two operating modes, including a low-power mode that runs always-on applications such as telematics, anti-theft systems, motion activation functions, vibration monitoring, and control.

ST emphasized that when operating in low-power mode, current consumption is less than 800µA even when both the accelerometer and gyroscope are running. It also features support for a high-performance mode for applications requiring high accuracy and low latency, such as precision positioning, V2X (Vehicle-to-Everything) communication, impact detection, and collision reconstruction.

ST stated that the MEMS manufacturing process ensures sensor stability and low noise with low Allan Variance for both the gyroscope and accelerometer sensors, and that the module maintains consistently high accuracy over an extended operating temperature range of -40°C to 105°C.

ST announced that the ASM330LHHX has obtained AEC-Q100 certification and is currently in production as a 14-lead LGA-14L (14-Lead Land-Grid Array) package.