The ASM330LHH is an automotive-grade 6-axis MEMS Inertial Measurement Unit (IMU) developed by STMicroelectronics (ST).

1) Basic Information

Part Number: ASM330LHH (Common variant: ASM330LHHTR, tape & reel package)

Configuration: 6-axis device integrating 3D accelerometer and 3D gyroscope, adopted with SiP (System in Package) technology by STMicroelectronics.

Package: LGA-14L, 14-lead leadless surface-mount package.

2) Core Parameters for Selection

Accelerometer Full Scale: ±2/±4/±8/±16 g (programmable)

Gyroscope Full Scale: ±125/±250/±500/±1000/±2000/±4000 dps (programmable)

Operating Temperature Range: -40℃ ~ +105℃ (automotive grade)

Interfaces: High-speed I²C and SPI

Current Consumption: Approximately 1.3 mA in high-performance mode; lower current in low-power mode.

Features: 3 KB FIFO, temperature compensation, low noise, 6-channel simultaneous output.

III. Core Functions

• Motion state measurement: Real-time output of 3-axis linear acceleration and 3-axis angular velocity of the vehicle to calculate attitude (pitch / roll / yaw).

• Dead Reckoning: Maintains high-precision positioning independently when GNSS signal is lost (in tunnels, underground parking lots, urban canyons). It serves as a core sensor for in-vehicle navigation and telematics.

• Attitude & motion detection: Supports interrupt functions such as free fall, 6D orientation, activity/inactivity detection and wake-up. Applied to vehicle anti-theft, vibration monitoring and low-power wake-up.

• Sensor fusion: Combines data from GNSS, wheel speed sensors, magnetometers and other devices to improve positioning and dynamic control accuracy.

IV. Application Scope

1) Automotive Sector (Main Market)

• In-vehicle Navigation & Telematics: Continuous positioning in GNSS-denied environments.

• Advanced Driver Assistance Systems (ADAS): Provides attitude and motion data to assist lane keeping and automatic parking.

• V2X (Vehicle-to-Everything): Transmits vehicle motion data to support intelligent transportation communication.

• Electronic Toll Collection (ETC), Remote Diagnostics & Emergency Assistance: Ensures stable operation with reliable motion data.

• Vehicle body attitude monitoring: Used for chassis control, suspension adjustment and rollover warning.

2) Other Industrial & High-end Fields

• Industrial inertial navigation: Attitude and positioning for AGVs, drones and construction machinery.

• Precision motion control: Motion tracking for robots, medical equipment and smart agricultural machinery.

V. Summary

The ASM330LHH is an automotive-grade 6-axis IMU featuring high precision, wide temperature range and low power consumption. It is mainly used for motion detection and positioning compensation when navigation signals are interrupted, and primarily applied to non-safety-related scenarios including in-vehicle navigation, telematics and ADAS.