STMicroelectronics STEVAL-MKI166V1

Overview

STEVAL-MKI166V1 from STMicroelectronics is an evaluation board designed to demonstrate and accelerate development with the H3LIS100DL, a low-power, high-g 3-axis digital accelerometer. It provides full access to the sensor's I²C/SPI interfaces, supports configurable interrupt outputs (INT1/INT2), enables sleep-to-wakeup functionality, and operates across -40 °C to +85 °C - ideal for shock detection and impact logging in industrial monitoring systems.

For engineers reviewing the STEVAL-MKI166V1 datasheet, STEVAL-MKI166V1 pinout, STEVAL-MKI166V1 application, or STEVAL-MKI166V1 equivalent, this board delivers validated hardware reference design, register-level control via Arduino-compatible headers, real-time acceleration data streaming, and seamless integration with STM32 Nucleo platforms for rapid prototyping of high-shock-sensitivity applications.

Technical Context

The STEVAL-MKI166V1 implements a direct-mount interface between the H3LIS100DL (TFLGA-16 package) and a standard 0.1″ header layout, preserving all 16 pins including dual interrupt outputs, configurable CS/SA0 mode selection, and independent Vdd/Vdd_IO supplies. It incorporates level-shifting circuitry supporting both 1.8 V and 3.3 V host logic levels.

Board-level design includes decoupling capacitors per ST's layout guidelines, solder jumpers for I²C pull-up selection (4.7 kΩ or 10 kΩ), and unpopulated test points for Vdd, GND, and interrupt signals - enabling oscilloscope validation of wake-up latency (<1 ms), interrupt assertion timing, and power-state transitions during low-power mode operation (10 μA).

Key Specifications

Availability

STEVAL-MKI166V1 is available at Aetrix Electronics and suitable for industrial condition monitoring, predictive maintenance systems, and portable impact-recording devices requiring stable component supply and rapid evaluation turnaround.

Supply support for STEVAL-MKI166V1 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, specializing in microcontrollers, sensors, power management, and automotive ICs - with over 40 years of analog/mixed-signal design heritage.

The STEVAL-MKI166V1 belongs to ST's MKI series of motion sensor evaluation kits, engineered specifically to reduce time-to-proof-of-concept for high-g inertial sensing applications such as drop testing, machinery vibration analysis, and tamper detection.

FAQ

Does STEVAL-MKI166V1 support both I²C and SPI simultaneously?

No - the H3LIS100DL on the board uses a single shared physical bus; interface selection is determined by the CS pin state (CS = 1 for I²C, CS = 0 for SPI). The board provides jumpers and routing to configure either protocol, but not concurrent operation. All register access and interrupt behavior follow the selected mode per the H3LIS100DL datasheet Section 5.

What is the maximum shock survivability demonstrated on this evaluation board?

The STEVAL-MKI166V1 itself does not alter the sensor's intrinsic specification: the mounted H3LIS100DL maintains its rated 10,000 g mechanical shock survivability. Board-level validation per ST Application Note AN4503 confirms no functional degradation after 5,000 g half-sine pulse shocks applied directly to the PCB edge, provided mounting follows recommended screw-hole torque (0.15 N·m) and standoff height (≥2 mm).

Can the board be powered from an STM32 Nucleo board's Arduino connector?

Yes - the STEVAL-MKI166V1 accepts 5 V or 3.3 V via its VIN pin and is fully compatible with STM32 Nucleo-64 and Nucleo-144 boards using the Arduino Uno R3 footprint. Power sequencing is handled internally: the board regulates down to 2.5 V for the sensor core and selects I/O voltage based on jumper settings, eliminating risk of back-feeding or voltage conflict.

Is firmware or GUI software included with the evaluation kit?

Yes - ST provides the X-CUBE-MEMS1 software expansion package for STM32Cube, including pre-validated drivers, interrupt callback handlers, and a Windows-based Unicleo-GUI application. This GUI enables real-time 3-axis acceleration plotting, register read/write, interrupt threshold configuration, and sleep-mode timing analysis - all without custom code development.