STMicroelectronics STEVAL-MKI219V1

Overview

STEVAL-MKI219V1 from STMicroelectronics is an LPS22CH MEMS barometric pressure sensor adapter board designed for rapid prototyping and evaluation. It provides full LPS22CH pin-out compatibility with a standard DIL-24 socket, includes on-board decoupling capacitors for VDD, and is fully interoperable with the STEVAL-MKI109V3 motherboard featuring an STM32F401VE microcontroller.

For engineers reviewing the STEVAL-MKI219V1 datasheet, STEVAL-MKI219V1 pinout, STEVAL-MKI219V1 application, or STEVAL-MKI219V1 equivalent, this adapter enables direct integration of the LPS22CH (260–1260 hPa absolute digital output barometer) into custom sensor systems using Unico-GUI or custom firmware via USB-to-serial bridge functionality.

Technical Context

The STEVAL-MKI219V1 serves as a passive breakout interface-no active circuitry or signal conditioning is implemented on-board. It routes all LPS22CH signals (including I²C SDA/SCL, interrupt pins INT1/INT2, and power rails VDD/VDDIO/GND) to 0.6-inch pitch DIL-24 header pins, preserving native electrical behavior and timing integrity.

Designed exclusively for use with the STEVAL-MKI109V3 motherboard, it relies on that board's STM32F401VE MCU to handle sensor initialization, register access, data streaming, and PC communication via virtual COM port-enabling real-time pressure logging and configuration without external logic.

Key Specifications

Availability

STEVAL-MKI219V1 is available at Aetrix Electronics and suitable for IoT edge node development, environmental monitoring system validation, and MEMS sensor algorithm testing requiring stable component supply and consistent mechanical interface across design iterations.

Supply support for STEVAL-MKI219V1 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, designing and manufacturing microcontrollers, sensors, power ICs, and analog devices for industrial, automotive, and consumer applications.

This adapter belongs to ST's STEVAL evaluation board family-engineered to accelerate time-to-test for MEMS sensors by providing standardized, plug-and-play hardware interfaces compatible with their flagship motherboard platforms.

FAQ

Does STEVAL-MKI219V1 include an onboard microcontroller or USB interface?

No. The board contains only passive routing traces, decoupling capacitors, and a DIL-24 footprint. It requires connection to the STEVAL-MKI109V3 motherboard (which hosts the STM32F401VE MCU and USB-to-serial bridge) to enable sensor communication and PC interaction.

Can STEVAL-MKI219V1 be used independently without STEVAL-MKI109V3?

No. It lacks power regulation, clock generation, firmware, and host interface circuitry. All sensor control, data acquisition, and USB communication depend entirely on the STEVAL-MKI109V3 motherboard and its Unico-GUI software stack.

What is the purpose of the dual power supply pins (VDD and VDDIO) on this adapter?

VDD powers the LPS22CH core (1.7–3.6 V), while VDDIO supplies the I/O buffer (1.2–3.6 V). The adapter preserves both rails separately to maintain correct voltage domain isolation as specified in the LPS22CH datasheet, ensuring reliable I²C signaling and interrupt operation.

Is the STEVAL-MKI219V1 compatible with other ST evaluation motherboards besides STEVAL-MKI109V3?

Officially supported only with STEVAL-MKI109V3. While electrically compatible with any system providing correct LPS22CH pin mapping and I²C timing, ST does not validate or guarantee operation with other motherboards such as STEVAL-MKI109V2 or STEVAL-MKI155V1 due to differences in interrupt routing, firmware, and GPIO assignment.