STMicroelectronics STEVAL-MKI128V5

Overview

STEVAL-MKI128V5 from STMicroelectronics is an evaluation board integrating LSM6DS3H (3-axis accelerometer + gyroscope), LIS3MDL (3-axis magnetometer), LPS22HB (barometric pressure sensor), HTS221 (humidity & temperature sensor), and UVIS25 (UV index sensor) on a single compact PCB. It supports I²C and SPI interfaces, operates from 1.91–3.6 V analog supply and 1.8 V I/O, and enables simultaneous multi-sensor data acquisition for motion and environmental monitoring.

For engineers reviewing the STEVAL-MKI128V5 datasheet, STEVAL-MKI128V5 pinout, STEVAL-MKI128V5 application, or STEVAL-MKI128V5 equivalent, this module serves as a validated hardware platform for rapid prototyping of sensor fusion algorithms, indoor navigation, wearable health tracking, and industrial IoT edge sensing - with documented interrupt routing, power modes, and OS-compatible drivers.

Technical Context

The module implements a heterogeneous sensor subsystem where LSM6DS3H provides 6DoF motion data with user-selectable full-scale ranges (±2/±4/±8/±16g accel; ±125/±245/±500/±1000/±2000 dps gyro), while LIS3MDL delivers magnetic field measurements up to ±16 gauss. LPS22HB contributes high-accuracy absolute pressure (260–1260 mbar) with 0.0075 hPa RMS noise, and HTS221 offers 16-bit RH and temperature readings across –40 to +85 °C.

UVIS25 provides digitized UV index output (0–15 range, UVI/16 resolution) with configurable readout (1 Hz ODR or one-shot). All sensors share dedicated interrupt lines (A/G_INT1, A/G_INT2, PRESSURE_INT, MAG_DRDY) routed to host GPIOs, enabling low-power event-driven operation without continuous polling.

Key Specifications

Availability

STEVAL-MKI128V5 is available at Aetrix Electronics and suitable for drone flight control, wearable wellness monitoring, industrial predictive maintenance, and AR/VR motion tracking requiring stable component supply and pre-validated sensor interoperability.

Supply support for STEVAL-MKI128V5 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 applications.

This module belongs to ST's STEVAL sensor evaluation platform family, engineered to accelerate development of sensor-fusion-based applications by delivering plug-and-play hardware with production-grade sensors and cross-platform driver support.

FAQ

What interfaces does STEVAL-MKI128V5 support?

STEVAL-MKI128V5 supports both I²C and SPI communication protocols. The I²C interface uses standard SDA/SCL lines with pull-up resistors onboard; SPI uses separate CS, SCK, MISO, and MOSI signals. Both interfaces are electrically isolated per sensor group and share no internal bus arbitration - enabling concurrent configuration and data reads when managed correctly by the host.

Does the module include firmware or only hardware?

The STEVAL-MKI128V5 is a hardware-only evaluation board. It does not include onboard firmware or microcontroller. Instead, it relies on external host processors (e.g., STM32, ESP32, Raspberry Pi) running ST-provided sensor drivers and middleware - available via ST's X-CUBE-MEMS1 software package and GitHub repositories for Android, Linux, and Windows.

Can all sensors operate simultaneously?

Yes - all five sensor types (accelerometer+gyro, magnetometer, pressure, humidity/temperature, UV) can be powered and sampled concurrently. The module's power architecture separates analog and digital domains, and each sensor has independent enable controls and interrupt outputs, allowing synchronized or staggered acquisition based on host scheduling and system power budget.

Is STEVAL-MKI128V5 RoHS and ECOPACK® compliant?

Yes - STEVAL-MKI128V5 complies with RoHS Directive 2011/65/EU and carries ST's ECOPACK®2 environmental certification. This confirms lead-free terminations, halogen-free laminates, and adherence to ST's green manufacturing standards, verified per the July 2016 DocID029225 Rev 2 data brief.