STMicroelectronics STEVAL-MKI018V1

Overview

STEVAL-MKI018V1 from STMicroelectronics is an adapter board for the LIS244AL 2-axis analog-output linear accelerometer, providing full DIL-24 socket compatibility, on-board decoupling capacitors for Vdd, and direct plug-in capability into standard prototyping systems. It enables rapid evaluation and system integration of the LIS244AL in motion-sensing applications such as tilt detection and vibration monitoring.

For engineers reviewing the STEVAL-MKI018V1 datasheet, STEVAL-MKI018V1 pinout, STEVAL-MKI018V1 application, or STEVAL-MKI018V1 equivalent, this board supports fast sensor substitution across ST's adapter ecosystem, requires no PCB redesign when switching between compatible sensors, and delivers ready-to-use analog signal conditioning for bench-level validation.

Technical Context

The board implements a passive interface with no active circuitry-its function is mechanical and electrical adaptation only. It maps all LIS244AL pins (including Vdd, GND, XOUT, YOUT, REF, and TEST) to a standard 24-pin dual-in-line footprint, preserving signal integrity through optimized trace routing and localized 100 nF ceramic decoupling at the Vdd input.

No voltage regulation, level shifting, or signal amplification is integrated. The board relies entirely on the host system for power supply (2.7–3.6 V), ground reference, and analog readout; output signals are unbuffered, rail-to-rail analog voltages proportional to acceleration along X and Y axes.

Key Specifications

Availability

STEVAL-MKI018V1 is available at Aetrix Electronics and suitable for motion sensor evaluation, industrial prototype development, and educational lab setups requiring stable component supply and cross-sensor interchangeability.

Supply support for STEVAL-MKI018V1 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 devices for industrial, automotive, and consumer markets.

This adapter belongs to ST's STEVAL sensor evaluation platform series, engineered to accelerate hardware validation by standardizing mechanical and electrical interfaces across its MEMS sensor portfolio.

FAQ

Does STEVAL-MKI018V1 include signal conditioning or ADC functionality?

No. The board provides only passive pin mapping and power decoupling. It delivers raw analog outputs (XOUT/YOUT) from the LIS244AL without amplification, filtering, or digitization. Users must connect these outputs to external circuitry-such as op-amps or microcontroller ADC inputs-for further processing.

Can STEVAL-MKI018V1 be used with microcontrollers operating at 5 V logic levels?

Only if the host system supplies 2.7–3.6 V to the board's Vdd pin. The LIS244AL is not 5 V tolerant; applying 5 V to Vdd will damage the sensor. Signal-level compatibility depends on the microcontroller's analog input voltage range-XOUT and YOUT swing within the LIS244AL's supply rails and require matching reference voltage.

Is STEVAL-MKI018V1 still in production?

No. STMicroelectronics has marked STEVAL-MKI018V1 as obsolete (as noted in the data brief revision history and document footer). Aetrix Electronics maintains limited legacy stock for design continuity and repair use, but no new manufacturing is planned.

What mechanical mounting options does STEVAL-MKI018V1 support?

The board features two 3.2 mm diameter mounting holes aligned with standard 0.1-inch grid spacing, enabling secure attachment to breadboards, perfboards, or custom carrier plates using M2.5 screws. Its 24-pin DIL footprint allows direct insertion into any standard DIL-24 socket without soldering.