STMicroelectronics STEVAL-MKI180V1

Overview

STEVAL-MKI180V1 from STMicroelectronics is a dedicated adapter board for the LIS3DHH 3-axis digital accelerometer, enabling plug-in evaluation via standard DIL-24 socket interface, featuring full pinout access, on-board 10 µF + 100 nF VDD decoupling, and direct compatibility with STEVAL-MKI109V2/V3 motherboards for PC-based sensor characterization using ST's Unico GUI.

For engineers reviewing the STEVAL-MKI180V1 datasheet, STEVAL-MKI180V1 pinout, STEVAL-MKI180V1 application, or STEVAL-MKI180V1 equivalent, this adapter provides verified mechanical and electrical interfacing to the LIS3DHH MEMS sensor in rapid prototyping workflows, supporting I²C/SPI communication, interrupt-driven motion detection, and supply rail decoupling validation.

Technical Context

The STEVAL-MKI180V1 implements a passive breakout interface between the LIS3DHH's 16-pin LGA package and a 24-pin DIL socket, preserving all signal terminations including SDO/SDI/SPC (SPI), SCL/SDA (I²C), CS, INT1, INT2, VDD, VDD_IO, and GND. No active logic or level-shifting circuitry is integrated.

It supports dual-interface operation (I²C at 400 kHz and SPI at up to 10 MHz) and maintains LIS3DHH's native voltage domains: VDD (2.16–3.6 V) and VDD_IO (1.71–3.6 V), with discrete decoupling capacitors placed per ST's recommended layout for low-noise analog sensing.

Key Specifications

Availability

STEVAL-MKI180V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, industrial motion prototype development, and embedded inertial subsystem validation requiring stable component supply and documented ST reference design integration.

Supply support for STEVAL-MKI180V1 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.

This adapter belongs to ST's STEVAL (ST Evaluation) platform family, engineered specifically to accelerate MEMS sensor integration by providing standardized, motherboard-compatible physical interfaces and GUI-ready signal routing.

FAQ

Does STEVAL-MKI180V1 include firmware or require programming?

No. The board contains only passive components and routing traces - it has no microcontroller, flash memory, or firmware. It functions solely as a mechanical and electrical interface between the LIS3DHH sensor and a host motherboard (e.g., STEVAL-MKI109V3) that provides the processing and USB-to-PC bridge functionality.

Can STEVAL-MKI180V1 be used without STEVAL-MKI109V2/V3 motherboards?

Yes - it can be manually wired to any host system providing compatible I²C/SPI signals, proper VDD/VDD_IO supplies, and interrupt handling. However, ST's Unico GUI and official driver support assume connection to MKI109-series motherboards with STM32-based bridge firmware.

What is the purpose of the two decoupling capacitors on VDD?

The 10 µF tantalum capacitor handles low-frequency supply ripple, while the 100 nF ceramic capacitor suppresses high-frequency noise from LIS3DHH's internal ADC and digital core - both placed per ST's layout guidelines in AN4752 to ensure stable accelerometer output and minimal measurement drift.

Are INT1 and INT2 pins preconfigured for specific LIS3DHH functions?

Yes - onboard 10 kΩ pull-up resistors enable default configuration for motion detection (INT1) and FIFO threshold alerts (INT2), matching LIS3DHH's factory-default interrupt mapping. Users may reconfigure these via register writes through I²C/SPI after initial communication is established.