STMicroelectronics STEVAL-MKI214V1

Overview

STEVAL-MKI214V1 from STMicroelectronics is an evaluation adapter board for the LPS33K MEMS absolute pressure sensor, providing full DIL-24 socket compatibility and pre-mounted decoupling capacitors (100 nF + 4.7 µF) on VDD_IO. It enables rapid prototyping of barometric sensing in industrial, consumer, and IoT applications requiring 300–1200 hPa measurement range with digital I²C output.

For engineers reviewing the STEVAL-MKI214V1 datasheet, STEVAL-MKI214V1 pinout, STEVAL-MKI214V1 application, or STEVAL-MKI214V1 equivalent, this adapter delivers plug-and-play integration with ST's STEVAL-MKI109V3, X-NUCLEO-IKS01A1/A2/A3 motherboards and Unico GUI support for real-time pressure data visualization and firmware customization.

Technical Context

The board implements a direct physical interface between the LPS33K sensor IC and host microcontroller platforms via standard 24-pin DIL footprint, preserving all native signal assignments including SCL, SDA, VDD_IO, and GND. No level-shifting or signal conditioning circuitry is integrated - it functions strictly as a passive breakout and power-decoupling adapter.

Designed exclusively for evaluation use, the board lacks onboard voltage regulation or firmware; operation requires external 1.71–3.6 V supply to VDD_IO and host-side I²C master control. Its RoHS-compliant construction aligns with ST's environmental compliance standards for development hardware.

Key Specifications

Availability

STEVAL-MKI214V1 is available at Aetrix Electronics and suitable for MEMS sensor evaluation, industrial environmental monitoring, consumer-grade altimetry, and IoT edge node development requiring stable component supply and rapid proof-of-concept validation.

Supply support for STEVAL-MKI214V1 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 analog, MEMS, power, and microcontroller solutions for automotive, industrial, and consumer markets.

This adapter belongs to ST's STEVAL evaluation kit product line, engineered specifically to accelerate customer adoption of ST MEMS sensors by providing standardized, motherboard-compatible hardware interfaces and GUI-ready firmware frameworks.

FAQ

Does STEVAL-MKI214V1 include the LPS33K sensor?

Yes - the board ships with the LPS33K MEMS pressure sensor pre-soldered and fully assembled. The LPS33K provides 300–1200 hPa absolute pressure measurement with 0.008 hPa RMS noise and I²C digital output, housed in a potted gel package for environmental robustness.

Can STEVAL-MKI214V1 operate standalone without a motherboard?

No - it lacks power regulation, microcontroller, and USB interface. It requires connection to a compatible host board (e.g., STEVAL-MKI109V3 or X-NUCLEO-IKS01A2) that supplies regulated VDD_IO, executes I²C communication, and bridges data to PC via USB or UART.

What software tools support STEVAL-MKI214V1?

ST's Unico GUI is the primary tool - it auto-detects the LPS33K via I²C, displays real-time pressure/temperature data, logs measurements, and allows register-level configuration. Custom firmware can also be developed using ST's X-CUBE-MEMS1 software expansion package.

Is STEVAL-MKI214V1 pin-compatible with other LPS-series adapters?

No - it is designed specifically for the LPS33K's 24-pin DIL footprint and signal mapping. Other ST pressure sensor adapters (e.g., STEVAL-MKI139V1 for LPS22HB) use different pinouts and are not mechanically or electrically interchangeable.