STMicroelectronics STEVAL-MKI220V1

Overview

STEVAL-MKI220V1 from STMicroelectronics is an evaluation adapter board for the LPS27HHTW high-resolution 3-axis digital inclinometer, providing full DIL-24 socket compatibility and pre-mounted decoupling capacitors (100 nF + 10 µF) on VDD. It interfaces directly with the STEVAL-MKI109V3 motherboard via I²C (SCL/SDA), SPI (CS/SDO), and interrupt (INT1) signals to enable rapid prototyping in industrial tilt-sensing applications.

For engineers reviewing the STEVAL-MKI220V1 datasheet, STEVAL-MKI220V1 pinout, STEVAL-MKI220V1 application, or STEVAL-MKI220V1 equivalent, this adapter enables immediate integration with STM32F401VE-based host systems, Unico GUI software, and custom firmware for real-time inclinometer data acquisition and calibration.

Technical Context

The board implements a passive breakout interface between the LPS27HHTW MEMS sensor and external host controllers, preserving all native signal routing: dual-interface support (I²C and SPI), dedicated INT1 interrupt output, and separate VDD/VDD_IO power domains. No onboard voltage translation or level-shifting circuitry is present - logic levels match the host system's VDD_IO rail.

It relies entirely on the STEVAL-MKI109V3 motherboard for MCU processing, USB-to-serial bridging, and firmware execution. The adapter contains no active components beyond passive decoupling and header connectors, making it a zero-latency, signal-transparent hardware interface.

Key Specifications

Availability

STEVAL-MKI220V1 is available at Aetrix Electronics and suitable for industrial inclinometer validation, MEMS sensor integration testing, and STM32-based embedded motion-sensing development requiring stable component supply and documented ST reference design alignment.

Supply support for STEVAL-MKI220V1 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 markets.

This board belongs to ST's STEVAL evaluation kit product line, engineered specifically to accelerate MEMS sensor adoption by providing standardized, motherboard-compatible hardware interfaces for rapid functional validation and GUI-driven characterization.

FAQ

Does STEVAL-MKI220V1 include the LPS27HHTW sensor?

No. The board is a passive adapter only - the LPS27HHTW sensor must be separately sourced and soldered onto the U1 footprint. The board provides the correct pad layout, decoupling, and pin breakout but ships without the MEMS device installed.

Which host motherboards are compatible with STEVAL-MKI220V1?

Only the STEVAL-MKI109V3 motherboard is officially supported, as it provides the required STM32F401VE MCU, USB bridge firmware, and Unico GUI driver stack. Other boards may physically fit but lack guaranteed signal mapping, firmware, or power sequencing compatibility.

Can STEVAL-MKI220V1 operate standalone without a motherboard?

No. It has no onboard MCU, clock source, or power regulation. All functionality depends on connection to STEVAL-MKI109V3, which supplies power, generates I²C/SPI clocks, handles interrupt servicing, and runs sensor configuration routines.

What software tools support STEVAL-MKI220V1?

ST's Unico GUI (v2.0+) is the primary tool, enabling real-time register read/write, data streaming, and calibration setup. Custom applications can use ST's X-CUBE-MEMS1 middleware library with HAL drivers targeting the STM32F401VE on the MKI109V3 motherboard.