STMicroelectronics STEVAL-MKI190V1

Overview

STEVAL-MKI190V1 from STMicroelectronics is a DIL24 socket-compatible adapter board for the LIS2DTW12 3-axis digital accelerometer and temperature sensor, providing full pin access, on-board decoupling (10 µF + two 100 nF), and direct plug-in capability into the STEVAL-MKI109D evaluation platform for rapid prototyping in asset tracking and motion-sensing applications.

For engineers reviewing the STEVAL-MKI190V1 datasheet, STEVAL-MKI190V1 pinout, STEVAL-MKI190V1 application, or STEVAL-MKI190V1 equivalent, this board enables immediate sensor integration via standardized DIL24 footprint, supports MEMS Studio GUI interaction, and delivers verified power conditioning and interrupt routing for real-world system validation.

Technical Context

The board implements a passive, unpowered adapter interface - no active logic or voltage translation - with dedicated VDD and VDDIO supply paths, dual interrupt outputs (INT1/INT2) routed to header pins, and configurable SA0 pin for I²C address selection. All LIS2DTW12 signal terminals are exposed via 2×12 male headers (JP1/JP2) matching standard DIL24 pinout order.

It requires external host control via STEVAL-MKI109D or compatible MCU bridge; no onboard microcontroller, clock source, or firmware is included. Power sequencing follows LIS2DTW12 specification: VDD (1.71–3.6 V) and VDDIO (1.71–3.6 V) are independently decoupled and brought out to header pins.

Key Specifications

Availability

STEVAL-MKI190V1 is available at Aetrix Electronics and suitable for asset tracking, industrial condition monitoring, and wearable motion-sensing applications requiring stable component supply and rapid sensor evaluation capability.

Supply support for STEVAL-MKI190V1 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 analog, MEMS, power, and microcontroller solutions for industrial, automotive, and consumer markets.

This board belongs to ST's Professional MEMS Tools product line - purpose-built adapter and evaluation platforms that simplify sensor integration, reduce time-to-test, and ensure signal integrity during early-stage development of motion-aware systems.

FAQ

Does STEVAL-MKI190V1 include an onboard microcontroller or firmware?

No. STEVAL-MKI190V1 is a passive adapter board with no active components, microcontroller, or embedded code. It relies entirely on an external host platform - such as the STEVAL-MKI109D - to provide power, communication, and data processing for the LIS2DTW12 sensor.

Can STEVAL-MKI190V1 be used without the STEVAL-MKI109D platform?

Yes - it can interface with any custom host system supporting LIS2DTW12's I²C or SPI protocols, provided correct voltage levels (VDD/VDDIO 1.71–3.6 V), timing, and interrupt handling are implemented. Header pinout matches DIL24 socket, enabling direct connection to test fixtures or carrier boards.

What is the function of the RES pin on JP1/JP2?

The RES pin (Pin 7 on JP1) corresponds to the LIS2DTW12's reset input. It is a dedicated active-low asynchronous reset terminal - asserted by pulling to GND - and is not internally pulled up or down. External pull-up is required if reset functionality is needed in the host system.

Is the SA0 pin accessible and how is it used?

Yes - SA0 is exposed on Pin 4 of JP2 and determines the LSB of the LIS2DTW12's I²C slave address (0x18 if SA0 = GND, 0x19 if SA0 = VDDIO). This allows co-location of multiple LIS2DTW12 sensors on the same I²C bus with unique addresses.