STMicroelectronics STEVAL-MKI168V1

Overview

STEVAL-MKI168V1 from STMicroelectronics is an adapter board designed to evaluate the IIS2DH 3-axis digital accelerometer in industrial applications. It provides full IIS2DH pinout access via a standard DIL24 socket, includes on-board decoupling (100 nF + 10 µF on VDD), supports I²C/SPI interface modes, and is fully compatible with the STEVAL-MKI109D evaluation platform.

For engineers reviewing the STEVAL-MKI168V1 datasheet, STEVAL-MKI168V1 pinout, STEVAL-MKI168V1 application, or STEVAL-MKI168V1 equivalent, this adapter enables rapid prototyping of MEMS-based motion sensing systems-especially where low-power, high-accuracy 3-axis acceleration data acquisition and interrupt-driven event detection are required.

Technical Context

The STEVAL-MKI168V1 is a passive hardware interface that maps all 12 pins of the IIS2DH LGA-12 package to a DIL24 footprint, preserving signal integrity for both I²C (SCL/SDA) and SPI (CS/SPC/SDI/SDO) communication. It routes INT1 and INT2 interrupt outputs directly to header pins for external microcontroller triggering.

Power conditioning includes dual-stage decoupling: a 100 nF ceramic capacitor and a 10 µF tantalum capacitor on the VDD line, ensuring stable operation across the IIS2DH's 1.71–3.6 V supply range. The board lacks onboard voltage regulation and requires external 1.8–3.3 V logic-level power applied to Vdd_IO and VDD.

Key Specifications

Availability

STEVAL-MKI168V1 is available at Aetrix Electronics and suitable for robotics motion control, industrial condition monitoring, and portable equipment development requiring stable component supply and fast sensor integration cycles.

Supply support for STEVAL-MKI168V1 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.

The STEVAL-MKI168V1 belongs to ST's professional MEMS evaluation tool family, engineered specifically to accelerate validation and firmware development for its industrial-grade accelerometers-including ultra-low-power, high-stability devices like the IIS2DH.

FAQ

Does STEVAL-MKI168V1 include a microcontroller or sensor?

No. It is a passive adapter board only. The IIS2DH accelerometer must be separately mounted or socketed. The board provides no active circuitry-only pin breakout, power filtering, and interface routing to match the STEVAL-MKI109D platform's DIL24 interface.

What host platforms is STEVAL-MKI168V1 compatible with?

It is fully compatible with the STEVAL-MKI109D evaluation platform, which uses a 32-bit STM32 microcontroller as a USB-to-sensor bridge. It can also interface with custom DIL24-compatible carriers supporting I²C or SPI, provided Vdd_IO and VDD voltage levels comply with IIS2DH specifications (1.71–3.6 V).

Can STEVAL-MKI168V1 operate standalone without STEVAL-MKI109D?

No. It has no onboard power regulation, clock generation, or communication interface ICs. It requires an external host (e.g., STEVAL-MKI109D or user-designed DIL24 carrier) to provide regulated power, I²C/SPI signals, and interrupt handling for the IIS2DH device.

How is interrupt functionality supported on this board?

INT1 and INT2 signals from the IIS2DH are routed unaltered to JP1 pins 11 and 10 respectively. These open-drain outputs require external pull-up resistors (not included) and connect directly to host MCU GPIOs for motion-triggered event detection, such as free-fall, wake-up, or data-ready signaling.