STMicroelectronics STEVAL-MKI006V1

Overview

STEVAL-MKI006V1 from STMicroelectronics is an evaluation board for the LIS302DL, a low-power 3-axis ±2g/±8g digital-output MEMS accelerometer. It integrates the LIS302DL sensor, ST7-USB microcontroller (TQFP64), USB interface (J1), SPI interface (J3), control switches (SW1–SW3), LED indicators, and GUI-ready firmware for real-time acceleration monitoring in portable electronics prototyping.

For engineers reviewing the STEVAL-MKI006V1 datasheet, STEVAL-MKI006V1 pinout, STEVAL-MKI006V1 application, or STEVAL-MKI006V1 equivalent, this kit enables rapid validation of LIS302DL sensor integration, USB-to-SPI bridging behavior, interrupt-driven motion detection, and low-power wake-up timing in handheld and wearable designs.

Technical Context

The board implements a hardware-accelerated sensor interface where the LIS302DL communicates via 3-wire SPI (CS_PAD, SCK, MOSI/MISO) to the ST7265X microcontroller, which handles data framing, USB CDC class enumeration, and interrupt routing (INT1/INT2). The ST7-USB provides on-board clocking (12 MHz crystal Yoscm1), reset management (nRESET), and configurable I/O for sensor configuration and status reporting.

Signal integrity is maintained through dedicated VDDF (sensor analog supply), VDD_IO (I/O voltage), and separate ground planes (GND, VSSA, VSSF). The board supports both self-test mode and user-triggered full-scale range switching (±2g ↔ ±8g) via SW2/SW3, with LED feedback (D1–D4) indicating power, communication, and interrupt states.

Key Specifications

Availability

STEVAL-MKI006V1 is available at Aetrix Electronics and suitable for portable consumer electronics development, industrial condition monitoring systems, and academic MEMS sensor research requiring stable component supply and validated reference firmware.

Supply support for STEVAL-MKI006V1 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, designing and manufacturing microcontrollers, sensors, power ICs, and automotive electronics for industrial, consumer, and automotive markets.

This evaluation board belongs to ST's STEVAL (ST Evaluation) platform family, engineered to accelerate time-to-prototype for MEMS motion sensors by delivering fully tested hardware, driver libraries, and GUI tools aligned with ST's sensor ecosystem.

FAQ

Does STEVAL-MKI006V1 support I²C communication with the LIS302DL?

No. The LIS302DL on this board is wired exclusively for 3-wire SPI operation (CS_PAD, SCK, MOSI/MISO). The LIS302DL's I²C interface is not connected - pin SDA (U1 pin 13) and SCL (U1 pin 14) are unpopulated and not routed to the ST7265X. Communication is SPI-only per the schematic.

What firmware version ships with STEVAL-MKI006V1?

The board ships with pre-flashed firmware for the ST7265X that implements USB CDC ACM class enumeration, SPI polling/interrupt handling for LIS302DL registers, and real-time acceleration streaming. Firmware source code and update instructions are provided in the official ST document UM0449 (v2.0, 2008).

Can the LIS302DL's full-scale range be changed dynamically during operation?

Yes. The board supports runtime switching between ±2g and ±8g ranges using SW2 (FS_SEL), which toggles the LIS302DL's CTRL_REG4 bit 4 (FS). This change is reflected immediately in output sensitivity (12 mg/LSB or 48 mg/LSB) and requires no microcontroller reset or reinitialization.

Is external power required, or does STEVAL-MKI006V1 operate solely from USB?

It operates solely from USB 5 V via J1 (USB_B connector). No external power supply is needed or supported - all onboard regulators (VDDF, VDD_IO) derive from USB VBUS. The board lacks an external DC jack or VIN terminal, and no jumper options exist for alternate powering.