STMicroelectronics STEVAL-MKI097V1

Overview

STEVAL-MKI097V1 from STMicroelectronics is an LPR430AL MEMS gyroscope adapter board designed for plug-in evaluation via a standard DIL24 socket. It provides full pinout access, on-board decoupling (10 µF + 100 nF VDD filtering), and compatibility with the STEVAL-MKI109V2 motherboard for PC-based sensor data acquisition using Unico GUI.

For engineers reviewing the STEVAL-MKI097V1 datasheet, STEVAL-MKI097V1 pinout, STEVAL-MKI097V1 application, or STEVAL-MKI097V1 equivalent, this board enables rapid prototyping of angular rate sensing in inertial measurement units, motion-controlled interfaces, and orientation-aware embedded systems without custom PCB design.

Technical Context

The STEVAL-MKI097V1 serves as a passive mechanical and electrical interface between the LPR430AL dual-axis ±300°/s gyroscope and the STEVAL-MKI109V2 motherboard. It routes all 24 pins-including X/Y/Z analog outputs, 4× gain-select lines (4xX/4xY/4xZ), power (VDD, GND), and control signals (ST, PD, VCONT_1G/VCONT_2G, FILTVDD_2G)-without signal conditioning or level shifting.

No active components are integrated: the board uses only passive decoupling (C5 = 10 µF, C6 = 100 nF, C1/C2/C3/C4 = 10 nF/470 nF pairs) and pull-up resistors (R1/R2 = 10 kΩ) for VCONT lines. It does not include voltage regulation, ADC, or microcontroller functionality-those reside on the host motherboard.

Key Specifications

Availability

STEVAL-MKI097V1 is available at Aetrix Electronics and suitable for inertial sensor evaluation, MEMS prototyping, and educational labs requiring stable component supply for hands-on motion sensing development.

Supply support for STEVAL-MKI097V1 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 ICs, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

The STEVAL evaluation board series supports rapid validation of ST's MEMS motion sensors - this adapter specifically bridges legacy LPR430AL gyroscopes to modern host platforms for seamless signal capture and algorithm testing.

FAQ

Does STEVAL-MKI097V1 include a microcontroller or firmware?

No. The board contains only passive components: decoupling capacitors, pull-up resistors, and a DIL24 socket footprint. All signal processing, USB communication, and GUI interaction are handled by the STEVAL-MKI109V2 motherboard's STM32F303 microcontroller and Unico software stack.

Can STEVAL-MKI097V1 be used without the STEVAL-MKI109V2 motherboard?

Yes, but only as a breakout interface - it exposes all LPR430AL pins to a DIL24 socket. Users must provide external power, ground, and read analog outputs with their own acquisition system. No onboard signal conditioning or digital interface is included.

What is the purpose of the VCONT_1G and VCONT_2G terminals?

These are dedicated voltage control inputs for selecting the LPR430AL's full-scale range: applying VDD to VCONT_1G sets ±125°/s; applying VDD to VCONT_2G sets ±300°/s. Both are routed to header JP1 pins 12 and 13 for hardware configuration.

Is STEVAL-MKI097V1 compatible with other ST MEMS adapters or motherboards?

It is mechanically and electrically designed for the STEVAL-MKI109V2 motherboard's DIL24 socket. While pinout matches LPR430AL specifications, no official compatibility is claimed with other ST evaluation platforms such as STEVAL-MKI109V1 or STEVAL-MKI160V1 due to differing host interface logic and routing.