STMicroelectronics LIS331HH

Overview

LIS331HH from STMicroelectronics is a MEMS digital-output 3-axis accelerometer with ultra-low-power operation, ±6g/±12g/±24g dynamically selectable full-scale range, 16-bit output resolution, and dual I²C/SPI serial interface. It delivers 10 µA current consumption in low-power mode, supports 6D orientation detection and two independent programmable interrupt engines, and is deployed in motion-activated power management for handheld consumer electronics.

For engineers reviewing the LIS331HH datasheet, LIS331HH pinout, LIS331HH application, or LIS331HH equivalent, key selection criteria include shock survivability (10,000 g), extended temperature operation (–40 °C to +85 °C), self-test capability, sleep-to-wake latency, and interrupt configuration flexibility for impact logging and pedometer algorithms.

Technical Context

The LIS331HH integrates a capacitive MEMS sensing element with a low-noise charge amplifier, 16-bit sigma-delta ADC, and digital signal conditioning logic. Its dual interrupt engines operate independently, each configurable for threshold-based motion detection, free-fall, or 6D orientation change with user-defined duration and latch behavior.

It supports two operational modes: normal mode (ODR up to 1 kHz) and low-power mode (ODR down to 0.5 Hz), with programmable high-pass filtering for zero-g offset compensation and self-test activation via CTRL_REG4. The device uses factory-trimmed reference circuits to maintain sensitivity stability across temperature (±0.01 %/°C).

Key Specifications

Pinout & Package

The LIS331HH is housed in a 3 mm × 3 mm × 1 mm LGA16 (Land Grid Array) package with exposed pad for thermal and mechanical stability. Pin 1 is marked by a dot on the top surface; the bottom view shows Y-axis direction alignment.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-axis MEMS accelerometer applications.

Compared with LSM303AHTR and ADXL345BCCZ-RL7, the LIS331HH uniquely combines ultra-low 10 µA power draw, 6D orientation logic, and 10,000 g ruggedness - making it optimal for battery-constrained, high-reliability motion logging where independent interrupt handling and self-validation are essential.

Availability

LIS331HH is available at Aetrix Electronics and suitable for pedometer systems, gaming motion input devices, impact recognition loggers, and vibration monitoring units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LIS331HH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for industrial, automotive, and consumer markets.

The LIS331HH belongs to ST's "nano" family of ultra-low-power MEMS accelerometers, engineered specifically for motion-activated power savings and intelligent wake-up in space- and energy-constrained portable electronics.

FAQ

What communication protocols does the LIS331HH support?

The LIS331HH supports both I²C (standard and fast mode up to 400 kHz) and SPI (3- or 4-wire, up to 10 MHz). Interface selection is controlled by the CS pin: high for I²C, low for SPI. SDO/SA0 serves dual roles - SPI data output or I²C address LSB - enabling flexible bus topology without additional address pins.

How does the LIS331HH achieve ultra-low power consumption?

The LIS331HH achieves 10 µA in low-power mode through clock gating, reduced ADC sampling rate, and optimized biasing of the MEMS transducer and signal chain. Power-down mode draws only 1 µA. Sleep-to-wake functionality allows immediate resumption of measurement upon interrupt, eliminating boot-up delays and minimizing active time.

Can the LIS331HH detect device orientation changes?

Yes - the LIS331HH implements 6D orientation detection, identifying six possible static orientations (X/Y/Z positive/negative) using vector magnitude and sign thresholds. This feature is implemented in hardware and requires no host CPU computation, reducing system-level power and latency for screen rotation or posture-aware functions.

What is the purpose of the two independent interrupt engines?

The two interrupt engines (INT1 and INT2) allow concurrent configuration of distinct inertial events - e.g., INT1 for free-fall detection and INT2 for 6D orientation change. Each has dedicated threshold, duration, and latch registers, enabling deterministic, low-latency responses without software polling or shared resource contention.