STMicroelectronics STEVAL-MKI169V1

Overview

STEVAL-MKI169V1 from STMicroelectronics is an adapter evaluation board for the I3G4250D 3-axis digital gyroscope, designed to plug into a standard DIL24 socket and enable rapid prototyping in industrial motion-sensing applications. It provides full pin access, on-board decoupling (10 nF, 100 nF, 470 nF, 10 µF), and compatibility with the STEVAL-MKI109D host platform.

For engineers reviewing the STEVAL-MKI169V1 datasheet, STEVAL-MKI169V1 pinout, STEVAL-MKI169V1 application, or STEVAL-MKI169V1 equivalent, this board serves as a hardware interface layer between the I3G4250D MEMS sensor and host microcontroller systems-supporting SPI/I²C communication, interrupt signaling (INT1/DRDY), and power supply conditioning for industrial-grade evaluation.

Technical Context

The STEVAL-MKI169V1 implements a passive breakout architecture with no active logic or signal conversion: it routes all 16 pins of the I3G4250D-including VDD, VDD_IO, SCL/SPC, SDA/SDI/SDO, CS, DRDY/INT2, INT1, DEN, PLLFILT, and GND-to dual 12-pin headers (JP1, JP2). No voltage translation or level-shifting circuitry is integrated.

It relies entirely on the STEVAL-MKI109D platform for MCU-based sensor control, data acquisition, and PC communication via USB. The board includes zero-ohm resistors (R1–R4) for optional configuration and unpopulated test points (T1, T2) for signal probing-enabling direct oscilloscope monitoring of clock, data, and interrupt lines.

Key Specifications

Availability

STEVAL-MKI169V1 is available at Aetrix Electronics and suitable for industrial motion sensing validation, MEMS sensor integration testing, and embedded inertial measurement unit (IMU) development requiring stable component supply and documented ST reference design support.

Supply support for STEVAL-MKI169V1 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 markets.

This board belongs to ST's STEVAL (ST Evaluation) product line-engineered to accelerate sensor evaluation and system-level integration by providing standardized, ready-to-use hardware interfaces for their MEMS portfolio.

FAQ

Does STEVAL-MKI169V1 include a microcontroller or firmware?

No. It is a passive adapter board with no embedded processor, memory, or firmware. All sensor control, data readout, and USB communication depend on the external STEVAL-MKI109D platform and MEMS Studio software running on a host PC.

What communication protocols does STEVAL-MKI169V1 support for the I3G4250D?

It supports both I²C (via SCL/SPC and SDA/SDI/SDO pins) and SPI (4-wire mode using CS, SDO/SA0, SDA/SDI/SDO, and SCL/SPC as SPC) as defined by the I3G4250D datasheet-no protocol translation or arbitration circuitry is present on the board itself.

Can STEVAL-MKI169V1 be used without the STEVAL-MKI109D platform?

Yes, but only with custom host hardware that matches the DIL24 pinout and provides correct voltage levels (VDD = 2.2–3.6 V, VDD_IO = 1.71–3.6 V), timing, and protocol handling. No onboard voltage regulation or level shifting is provided.

Are the zero-ohm resistors (R1–R4) required for basic operation?

No. R1–R4 are unpopulated by default and serve as optional configuration jumpers-for example, R2 bridges VDD_IO to VDD when soldered, enabling single-supply operation. Their use depends on host system voltage architecture and is not needed for standard STEVAL-MKI109D operation.