STMicroelectronics STEVAL-MKI154V1

Overview

STEVAL-MKI154V1 from STMicroelectronics is an adapter board for the LSM9DS0 9-axis iNEMO inertial measurement unit (IMU), enabling plug-in evaluation via standard DIL-24 socket and full pin access to all sensor signals including accelerometer, gyroscope, and magnetometer interfaces. It integrates decoupling capacitors (10 µF, 4.7 µF, 100 nF, 0.22 µF) and supports direct connection to STEVAL-MKI109V2 motherboard for PC-based GUI-driven development.

For engineers reviewing the STEVAL-MKI154V1 datasheet, STEVAL-MKI154V1 pinout, STEVAL-MKI154V1 application, or STEVAL-MKI154V1 equivalent, this board serves as a rapid prototyping interface for MEMS sensor integration in motion-sensing systems requiring I²C/SPI communication, interrupt-driven data acquisition, and power-supply-stable analog signal conditioning.

Technical Context

The board maps all 24 pins of the LSM9DS0 IC-including dual CS lines (CS_XM, CS_G), separate interrupt outputs (INT1_XM, INT2_XM, INT_G), data-ready (DRDY_G), and digital enable (DEN_G)-to a DIL-24 footprint. It provides dedicated VDD and VDD_IO rails with staged decoupling to meet LSM9DS0's dual-supply timing and noise requirements.

Designed exclusively for use with STEVAL-MKI109V2, it relies on that motherboard's STM32F4 microcontroller to handle sensor register configuration, streaming, and USB-to-PC bridging. No onboard MCU or firmware is present-the adapter is purely passive signal routing and power conditioning.

Key Specifications

Availability

STEVAL-MKI154V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, motion-tracking prototyping, industrial tilt-sensing validation, and wearable device development requiring stable component supply and documented ST reference design integration.

Supply support for STEVAL-MKI154V1 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, designing and manufacturing microcontrollers, sensors, power devices, and analog ICs for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series-engineered specifically to accelerate customer adoption of ST MEMS sensors by providing standardized, low-friction hardware interfaces to their flagship motion-sensing ICs.

FAQ

Does STEVAL-MKI154V1 include an onboard microcontroller?

No. The board contains only passive components and a DIL-24 socket for the LSM9DS0. It has no MCU, memory, or firmware. Operation requires connection to STEVAL-MKI109V2 or another compatible host controller with I²C/SPI and GPIO capability to drive sensor registers and read data.

Can STEVAL-MKI154V1 be used without STEVAL-MKI109V2?

Yes, but only with external host hardware. The board exposes all LSM9DS0 pins-including SCL, SDA, CS_XM, CS_G, INT1_XM, DRDY_G-so it can interface directly with user-designed microcontroller systems meeting LSM9DS0's voltage, timing, and signaling requirements.

What is the purpose of the two separate VDD and VDD_IO connections?

VDD powers the LSM9DS0's analog sensor core (accelerometer/gyroscope/magnetometer), while VDD_IO supplies its digital I/O buffers. This separation prevents digital switching noise from corrupting analog measurements-a requirement explicitly defined in the LSM9DS0 datasheet for optimal 9-axis accuracy.

Is the STEVAL-MKI154V1 pinout identical to the LSM9DS0 IC package?

Yes. The board replicates the exact 24-pin DIL footprint and signal mapping of the LSM9DS0's LGA-24 package via a pin-header adapter. Each pad on the board corresponds one-to-one with the IC's functional pins, preserving signal integrity and eliminating routing ambiguity during evaluation.