STMicroelectronics STEVAL-MKI134V1

Overview

STEVAL-MKI134V1 from STMicroelectronics is a MEMS sensor adapter board designed to interface the LIS3DSH 3-axis digital accelerometer with a standard DIL-24 socket, providing full pinout access, on-board decoupling (100 nF + 10 µF), and direct compatibility with the STEVAL-MKI109V2 motherboard for PC-based evaluation via Unico GUI.

For engineers reviewing the STEVAL-MKI134V1 datasheet, STEVAL-MKI134V1 pinout, STEVAL-MKI134V1 application, or STEVAL-MKI134V1 equivalent, this adapter enables rapid prototyping of motion-sensing systems using I²C/SPI interfaces, interrupt-driven wake-up, and analog ADC inputs - critical for embedded inertial measurement validation.

Technical Context

The board implements a passive breakout architecture with zero active logic: all LIS3DSH signals - including dual interrupt outputs (INT1/INT2), I²C (SCL/SDA), SPI (CS/SDO), and three auxiliary ADC inputs (ADC1–ADC3) - are routed unaltered to the DIL-24 header. Power conditioning includes dedicated VDD_IO and VCC rails with ceramic (100 nF) and electrolytic (10 µF) decoupling.

No microcontroller or firmware resides on the board; it functions strictly as a mechanical and electrical interface between the LIS3DSH die and host evaluation platforms. Compatibility with STEVAL-MKI109V2 relies on external bridge MCU handling protocol translation, register access, and GUI communication.

Key Specifications

Availability

STEVAL-MKI134V1 is available at Aetrix Electronics and suitable for motion sensor evaluation, industrial condition monitoring, and consumer electronics prototyping requiring stable component supply and documented ST reference design integration.

Supply support for STEVAL-MKI134V1 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 devices for industrial, automotive, and consumer markets.

This adapter belongs to ST's STEVAL (ST Evaluation) platform family, engineered specifically to accelerate MEMS sensor integration by eliminating custom PCB design for initial characterization and GUI-based functional validation.

FAQ

Does STEVAL-MKI134V1 include the LIS3DSH sensor?

No. The board is an empty adapter - the LIS3DSH must be separately sourced and mounted into the DIL-24 socket. The board provides only routing, decoupling, and mechanical support; no sensor is pre-soldered or included in the kit.

Can STEVAL-MKI134V1 operate standalone without STEVAL-MKI109V2?

No. It lacks power regulation, communication interface, or firmware. It requires connection to a host platform like STEVAL-MKI109V2 (or compatible MCU-based bridge) to provide clocking, protocol handling, and PC communication for sensor register access and data streaming.

What software tools support this board?

ST's Unico GUI - a free Windows application - directly supports STEVAL-MKI134V1 when used with STEVAL-MKI109V2. Custom firmware can also be developed using ST's HAL drivers and LIS3DSH application notes for register-level control and interrupt configuration.

Are jumpers or solder bridges required for I²C vs. SPI mode selection?

No. Interface mode is determined solely by the host MCU's software configuration and external pull-ups. All SCL/SDA/CS/SDO pins are hardwired per LIS3DSH pinout; no on-board jumpers or mode-select resistors are present or needed.