STMicroelectronics STEVAL-MKI205V1

Overview

STEVAL-MKI205V1 from STMicroelectronics is an adapter board for the LPS33W MEMS absolute pressure sensor (260–1260 hPa range), providing full DIL-24 socket compatibility, complete pinout access, and pre-mounted decoupling capacitors (100 nF + 10 µF) on VDD and VDD_IO. It enables rapid prototyping of barometric sensing in industrial, environmental, and portable systems.

For engineers reviewing the STEVAL-MKI205V1 datasheet, STEVAL-MKI205V1 pinout, STEVAL-MKI205V1 application, or STEVAL-MKI205V1 equivalent, this board serves as a plug-in evaluation interface for LPS33W sensors-supporting I²C/SPI communication, interrupt-driven data acquisition, and integration with STEVAL-MKI109V3 host motherboards via standard headers.

Technical Context

The STEVAL-MKI205V1 implements a passive breakout architecture with no active logic or voltage translation: all LPS33W signals-including SDO, SCL, SDA, CS, INT1, and VDD_IO-are routed directly to 24-pin DIL socket pins without buffering or level-shifting. Power integrity is maintained via dedicated ceramic (100 nF) and electrolytic (10 µF) decoupling on both VDD and VDD_IO rails.

It functions exclusively as a mechanical and electrical interface: no firmware, MCU, or signal conditioning is embedded. Compatibility with STEVAL-MKI109V3 relies on external host control via GPIO and I²C/SPI peripherals of the STM32F401VET6 microcontroller, enabling real-time sensor register access and Unico GUI interaction.

Key Specifications

Availability

STEVAL-MKI205V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, industrial environmental monitoring, portable barometric altitude tracking, and embedded IoT prototype development requiring stable component supply and rapid time-to-test.

Supply support for STEVAL-MKI205V1 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, MEMS sensors, power ICs, and analog devices for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL evaluation kit family-engineered to accelerate validation of MEMS motion and environmental sensors by delivering standardized, ready-to-connect hardware interfaces aligned with ST's sensor IC pinouts and communication protocols.

FAQ

Does STEVAL-MKI205V1 include the LPS33W sensor?

No. The STEVAL-MKI205V1 is a passive adapter board only-it provides the socket and routing for the LPS33W but does not include the sensor IC. Users must source and mount the LPS33W separately, typically in its potted gel package (e.g., LPS33WTR).

Can STEVAL-MKI205V1 operate standalone without STEVAL-MKI109V3?

No. It has no onboard power regulation, clock generation, or host interface logic. It requires connection to a compatible motherboard (e.g., STEVAL-MKI109V3) or custom host system providing regulated 1.7–3.6 V supplies, I²C/SPI signals, and interrupt handling.

What are the voltage requirements for VDD and VDD_IO?

VDD supports 1.7–3.6 V for core sensor operation; VDD_IO supports 1.7–3.6 V for I/O logic level setting. Both rails require independent decoupling-provided onboard via 100 nF and 10 µF capacitors-and must be supplied externally.

Is the board compatible with other ST MEMS adapters besides STEVAL-MKI109V3?

Yes-mechanically and electrically compatible with any ST evaluation motherboard supporting the same 24-pin DIL sensor adapter interface and pin mapping, including legacy variants like STEVAL-MKI09V3 (subject to firmware and driver alignment).