STMicroelectronics STEVAL-MKI186V1

Overview

STEVAL-MKI186V1 from STMicroelectronics is a DIL24-socket-compatible adapter board designed exclusively for evaluating the IIS3DHHC 3-axis digital accelerometer. It provides full pin access-including SDO, SCL, SDA, CS, INT1, INT2, VDD, VDD_IO, and GND-pre-mounted decoupling (100 nF + 10 µF), and direct plug-in capability into STEVAL-MKI109V3 or STEVAL-MKI109D evaluation platforms used in industrial motion monitoring prototyping.

For engineers reviewing the STEVAL-MKI186V1 datasheet, STEVAL-MKI186V1 pinout, STEVAL-MKI186V1 application, or STEVAL-MKI186V1 equivalent, this adapter enables rapid integration with STM32F401VE-based MEMS tooling, supports MEMS Studio GUI operation, and delivers verified signal routing for I²C/SPI interface validation and interrupt-driven motion detection testing.

Technical Context

The STEVAL-MKI186V1 implements a passive breakout architecture with no active logic or level-shifting circuitry-its sole function is mechanical and electrical interfacing between the IIS3DHHC sensor and host evaluation platforms. All signals are routed 1:1 with no buffering, inversion, or voltage translation, preserving native timing and drive strength per IIS3DHHC's I²C/SPI/INT specifications.

It integrates two dedicated decoupling capacitors (100 nF ceramic + 10 µF tantalum) on the VDD rail to meet IIS3DHHC's power-supply noise rejection requirements under dynamic acceleration sampling, and uses unpopulated 0603 resistor pads (R1–R4) to support optional pull-up configuration for SCL/SDA/INT lines per host platform needs.

Key Specifications

Availability

STEVAL-MKI186V1 is available at Aetrix Electronics and suitable for industrial motion sensing evaluation, MEMS sensor integration validation, and embedded prototype development requiring stable component supply and traceable ST original hardware.

Supply support for STEVAL-MKI186V1 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, specializing in microcontrollers, sensors, power ICs, and automotive-grade silicon.

This board belongs to ST's Professional MEMS Tools product line-designed to accelerate sensor evaluation through standardized mechanical interfaces, guaranteed signal integrity, and seamless integration with STM32-based host platforms and MEMS Studio software.

FAQ

Does STEVAL-MKI186V1 include the IIS3DHHC sensor?

No. The STEVAL-MKI186V1 is an adapter board only-it provides the socket and routing for the IIS3DHHC but does not include the sensor IC itself. Users must source and mount the IIS3DHHC separately or obtain it pre-mounted via ST's bundled kits (e.g., STEVAL-MKI186V1 + IIS3DHHC sample).

Can STEVAL-MKI186V1 be used standalone without STEVAL-MKI109V3/D?

No. It lacks onboard MCU, USB interface, or firmware-functionality requires connection to STEVAL-MKI109V3 or STEVAL-MKI109D, which provide the STM32F401VE bridge, USB-to-serial conversion, and MEMS Studio communication stack.

What is the purpose of the unpopulated resistor pads (R1–R4)?

These 0603 pads allow users to add external pull-up resistors on SCL, SDA, INT1, and INT2 lines when required by host platform voltage levels or bus loading conditions-no resistors are pre-installed, enabling flexible I²C/SPI configuration per target system.

Is STEVAL-MKI186V1 RoHS compliant?

Yes. As stated in the official ST documentation (DB3537 Rev 3), the board conforms to RoHS Directive 2011/65/EU, using lead-free solder paste, halogen-free laminates, and compliant surface finishes across all PCB layers and components.