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STMicroelectronics STEVAL-MKI024V1

Name: STEVAL-MKI024V1
Brand: STMicroelectronics
SKU: STEVAL-MKI024V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-MKI024V1

Manufacturer:: STMicroelectronics

Category:: Sensor Evaluation Boards

Package:

Datasheet:: STEVAL-MKI024V1.pdf

Description:: DEMO BOARD BASED ON LIS331DL

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,069

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Product details

Overview

STEVAL-MKI024V1 from STMicroelectronics is a ready-to-use demonstration board for the LIS331DL 3-axis digital accelerometer, featuring ±2g/±8g full-scale selection, 100 Hz / 400 Hz output data rate, I²C/SPI interface, and programmable inertial interrupt generation (free-fall/wake-up) on all three axes. It integrates an ST72F65x USB microcontroller to bridge sensor data to PC via Mini-USB.

For engineers reviewing the STEVAL-MKI024V1 datasheet, STEVAL-MKI024V1 pinout, STEVAL-MKI024V1 application, or STEVAL-MKI024V1 equivalent, this board enables rapid evaluation of MEMS motion sensing in portable electronics, industrial tilt detection, and user-interface gesture recognition - with GUI-driven configuration and real-time data streaming.

Technical Context

The board implements a complete signal chain: LIS331DL MEMS transducer outputs digitized acceleration data via configurable I²C or SPI to the ST72F65x MCU, which handles USB enumeration, firmware update (DFU mode), and host communication. The MCU runs embedded firmware that maps sensor registers to USB HID-class reports.

Power architecture includes dual regulation: ST662ABD provides 3.3 V for digital logic and sensor interface, while internal LDOs condition analog supply (Vdda) and I/O voltage (Vdd_IO). Interrupt lines INT1/INT2 from LIS331DL connect directly to MCU GPIOs for low-latency event handling.

Key Specifications

Parameter	Value and Actual Design Meaning
Sensor IC	LIS331DL - ultra-low-power 3-axis ±2g/±8g digital accelerometer with embedded interrupt generators
Microcontroller	ST72F65x - 8-bit USB-capable MCU with 32 KB Flash, used as sensor-to-PC bridge
Interface	Mini-USB (J1) + SPI/I²C headers (J2/J3) - enables both PC-hosted GUI and custom embedded firmware development
Data Rate	Configurable 100 Hz or 400 Hz ODR - supports real-time motion tracking without oversampling overhead
Interrupt Capability	Dual programmable interrupts (INT1/INT2) - trigger on free-fall, wake-up, or data-ready events per axis
Power Supply	5 V USB input; regulated 3.3 V (digital) and dedicated Vdda (analog) rails - ensures stable sensor biasing and noise immunity

Availability

STEVAL-MKI024V1 is available at Aetrix Electronics and suitable for portable consumer electronics validation, industrial tilt-sensing prototyping, and human-interface gesture evaluation requiring stable component supply and documented reference firmware.

Supply support for STEVAL-MKI024V1 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 automotive-grade components.

This board belongs to ST's STEVAL (ST Evaluation) platform family, engineered to accelerate time-to-proof for MEMS motion sensing applications using production-representative silicon and open firmware architecture.

FAQ

Does STEVAL-MKI024V1 support SPI and I²C simultaneously?

No. The LIS331DL on the board uses either SPI or I²C at a time, selected by hardware strap (CS1 pin state). J2 header exposes SPI signals (SCK/MISO/MOSI/CS), while J3 provides I²C (SCL/SDA) - both share the same physical sensor but require separate firmware initialization.

Is the GUI software included with STEVAL-MKI024V1 still supported?

Yes. ST provides the legacy "eMotion" GUI (v2.x) compatible with Windows XP–10, downloadable from ST's archive portal under Doc ID 15563. Firmware binaries and source code for ST72F65x are also available for customization and porting to newer toolchains.

Can the board operate from battery power instead of USB?

No. The board lacks onboard battery charging or regulation circuitry. It draws power exclusively from the Mini-USB port (J1), delivering 5 V to the ST662ABD regulator. External 3.3 V supply is not supported - Vddf and VCC pins are internally tied to regulated outputs.

What is the role of the ST72F65x's DFU_SEL jumper (J4)?

J4 selects Device Firmware Upgrade mode: when closed, it forces the ST72F65x into USB DFU bootloader mode at reset, allowing firmware reprogramming without external programmer. In normal operation, J4 is open, and the MCU executes preloaded sensor-bridge firmware.

STEVAL-MKI024V1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: MEMS

Packaging:: Bulk

Product Status:: Obsolete

Sensor Type:: Accelerometer, 3 Axis

Sensing Range:: ±2.3g, 9.2g

Interface:: SPI, USB

Sensitivity:: 72mg/digit

Voltage - Supply:: 5V, USB

Embedded:: Yes, MCU, 8-Bit

Contents:: Board(s)

Utilized IC / Part:: LIS331DL

STEVAL-MKI024V1 FAQ

1.How can I place an order for STEVAL-MKI024V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-MKI024V1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STEVAL-MKI024V1 reliable?

The price and inventory of STEVAL-MKI024V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI024V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-MKI024V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI024V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-MKI024V1?

STEVAL-MKI024V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-MKI024V1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STEVAL-MKI024V1?

For technical support, including STEVAL-MKI024V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI024V1 requirements.

6.How does Aetrix verify that STEVAL-MKI024V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-MKI024V1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STEVAL-MKI024V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-MKI024V1?

All STEVAL-MKI024V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI024V1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STEVAL-MKI024V1 part is unused and in its original packaging.

Return procedure for STEVAL-MKI024V1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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