STMicroelectronics STEVAL-MKI185V1

Overview

STEVAL-MKI185V1 from STMicroelectronics is a DIL24-socket-compatible adapter board designed exclusively for evaluating the IIS2MDC 3-axis digital magnetometer. It provides full pin access (VDD, VDD_IO, SCL, SDA, CS, DRDY, INT/DRDY), integrated decoupling (100 nF + 10 µF + 220 nF), and seamless plug-in compatibility with the STEVAL-MKI109D evaluation platform for MEMS sensor prototyping.

For engineers reviewing the STEVAL-MKI185V1 datasheet, STEVAL-MKI185V1 pinout, STEVAL-MKI185V1 application, or STEVAL-MKI185V1 equivalent, this board enables rapid integration of the IIS2MDC into antitampering systems, smart meter validation, and high-accuracy magnetic field measurement setups requiring direct sensor interface and MEMS Studio GUI support.

Technical Context

The STEVAL-MKI185V1 serves as a passive breakout interface-no active circuitry or signal conditioning is implemented. All IIS2MDC pins are routed to a standard 24-pin dual-in-line header with 2.54 mm pitch, preserving native I²C/SPI functionality and interrupt signaling (DRDY/INT).

Power delivery is segregated: VDD (2.2–3.6 V) and VDD_IO (1.71–3.6 V) are independently decoupled using ceramic capacitors (100 nF, 10 µF, 220 nF), matching IIS2MDC's recommended layout per DB3484. No level-shifting or voltage regulation is included.

Key Specifications

Availability

STEVAL-MKI185V1 is available at Aetrix Electronics and suitable for smart meter antitampering validation, MEMS sensor reference design development, and industrial magnetic field characterization requiring stable component supply and documented ST evaluation hardware traceability.

Supply support for STEVAL-MKI185V1 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.

The STEVAL-MKI185V1 belongs to ST's professional MEMS evaluation tool family, engineered specifically to accelerate qualification and system-level testing of its high-accuracy inertial and magnetic sensors - starting with the IIS2MDC magnetometer.

FAQ

Does STEVAL-MKI185V1 include firmware or microcontroller functionality?

No. The board is a passive adapter: it contains no microcontroller, flash memory, or embedded firmware. It routes IIS2MDC signals directly to headers and relies entirely on external platforms like STEVAL-MKI109D for host communication and data processing.

Can STEVAL-MKI185V1 be used standalone without STEVAL-MKI109D?

Yes - it can interface with any host system providing compatible I²C/SPI logic levels (1.71–3.6 V), proper power sequencing, and interrupt handling. However, ST does not provide standalone driver libraries or GUI support outside the MKI109D/MEMS Studio ecosystem.

What is the purpose of JP1 and JP2 jumpers on STEVAL-MKI185V1?

JP1 selects between internal VDD_IO sourcing (from VDD) or external VDD_IO supply; JP2 configures DRDY/INT pin function (DRDY-only or dual-mode). These match IIS2MDC configuration options defined in its datasheet and enable flexible signal routing during evaluation.

Is the STEVAL-MKI185V1 schematic publicly available?

Yes - the full schematic is published in Data Brief DB3484 (Rev 2, October 2025), including component values, net labels, and layout notes. Figure 1 shows all capacitor placements, header pin assignments, and IIS2MDC connection topology.