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STMicroelectronics STEVAL-MKI235KA

Name: STEVAL-MKI235KA
Brand: STMicroelectronics
SKU: STEVAL-MKI235KA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-MKI235KA

Manufacturer:: STMicroelectronics

Category:: Expansion Boards, Daughter Cards

Package:

Datasheet:: STEVAL-MKI235KA.pdf

Description:: DIL24 ADAPTER BOARD LIS2DUXS12

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,425

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Product details

Overview

STEVAL-MKI235KA from STMicroelectronics is a ready-to-use evaluation kit based on the LIS2DUXS12 ultralow-power 3-axis smart accelerometer with integrated Qvar electrostatic sensing, AI processing, antialiasing filter, and I²C/SPI digital interface. It provides full pin access via a standard DIL24 socket and includes decoupling capacitors on VDD and VDDIO for immediate prototyping in gesture-sensing and touchless UI applications.

For engineers reviewing the STEVAL-MKI235KA datasheet, STEVAL-MKI235KA pinout, STEVAL-MKI235KA application, or STEVAL-MKI235KA equivalent, this board enables rapid validation of Qvar electrode configurations (swipe/finger/generic), LIS2DUXS12 register mapping, interrupt behavior (INT1/INT2), and MEMS Studio GUI integration with the STEVAL-MKI109D host platform.

Technical Context

The kit implements the LIS2DUXS12 sensor in a fixed-mount DIL24 footprint with dedicated 3-pin SMD headers for QVAR1 (Q+) and QVAR2 (Q−) electrodes, plus solder bridges (I1/I2) and pull-up resistors (R1–R8, 10 MΩ) to configure Qvar sensing modes. Power is supplied via VDD (1.71–3.6 V) and VDDIO (1.71–3.6 V), each decoupled with 2.2 µF and 100 nF ceramics.

It interfaces directly with the STEVAL-MKI109D evaluation platform through a 12×2 header (JP1), supporting I²C (SCL/SDA), SPI (CS/SCL/SDO/SDI), SA0 address selection, and dual interrupt outputs (INT1/INT2). The board is RoHS compliant and designed for plug-and-play use without external programming hardware.

Key Specifications

Parameter	Value and Actual Design Meaning
Sensor Core	LIS2DUXS12 3-axis smart accelerometer with embedded Qvar electrostatic sensing and finite-state machine (FSM) AI engine
Electrode Support	Three configurable Qvar electrode types: swipe, finger, and generic - enabled via dedicated 3-pin SMD headers QVAR1/QVAR2
Digital Interface	I²C (up to 400 kHz) and SPI (4-wire, up to 10 MHz) with SA0 pin for slave address selection
Power Supply	VDD = 1.71–3.6 V; VDDIO = 1.71–3.6 V; decoupled with 2.2 µF + 100 nF ceramic capacitors per rail
Interrupt Outputs	Dual open-drain interrupt pins (INT1, INT2) supporting motion detection, FIFO threshold, Qvar event, and FSM state change
Mechanical Interface	Standard DIL24 socket footprint enabling direct insertion into breadboards or carrier boards without soldering
RoHS Compliance	Fully compliant per EU Directive 2011/65/EU - no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE

Availability

STEVAL-MKI235KA is available at Aetrix Electronics and suitable for gesture-based human-machine interface development, AR smart glasses prototyping, and touchless control system validation requiring stable component supply and fast time-to-test.

Supply support for STEVAL-MKI235KA 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 analog/mixed-signal devices for industrial, automotive, and consumer applications.

This kit belongs to ST's Professional MEMS Tools product line - evaluation platforms engineered specifically for rapid characterization, firmware validation, and GUI-driven development of ST's intelligent MEMS sensors, including Qvar, AI, and advanced digital features.

FAQ

Does STEVAL-MKI235KA require external programming hardware to operate?

No. The board is passive and requires no onboard programming circuitry. It functions as a sensor daughterboard and draws power and communication signals from the host platform - typically the STEVAL-MKI109D - which handles USB-to-I²C/SPI bridging and firmware loading via MEMS Studio or custom host software.

Can STEVAL-MKI235KA be used independently without STEVAL-MKI109D?

Yes, but only with an external microcontroller or host system providing compatible I²C/SPI signaling, correct voltage levels (VDD/VDDIO 1.71–3.6 V), and proper Qvar electrode biasing. The board lacks onboard regulation or USB interface, so standalone use requires full signal and power infrastructure design.

What Qvar electrode configurations are supported by the board's hardware layout?

The board supports three Qvar electrode types via dedicated 3-pin SMD headers: QVAR1 (labeled Q+) and QVAR2 (labeled Q−) for differential sensing, with resistor networks (R1–R8, 10 MΩ) and solder bridges (I1/I2) enabling swipe, finger, or generic mode selection per ST's LIS2DUXS12 Qvar application guidelines.

Is MEMS Studio software required to evaluate LIS2DUXS12 functionality on this board?

MEMS Studio is optional but strongly recommended. It provides real-time register access, Qvar waveform visualization, FSM state monitoring, and AI model configuration. Custom firmware can alternatively access all LIS2DUXS12 registers and features via I²C/SPI using the documented register map in DB4902 Rev 3.

STEVAL-MKI235KA Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Packaging:: Bulk

Product Status:: Active

Platform:: Professional MEMS Tool

Type:: Sensor

Function:: Accelerometer

Utilized IC / Part:: LIS2DUXS12

Contents:: Board(s)

STEVAL-MKI235KA FAQ

1.How can I place an order for STEVAL-MKI235KA through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-MKI235KA 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-MKI235KA reliable?

The price and inventory of STEVAL-MKI235KA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI235KA is usually 5 days.

3.What payment methods are accepted for STEVAL-MKI235KA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI235KA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-MKI235KA?

STEVAL-MKI235KA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-MKI235KA 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-MKI235KA?

For technical support, including STEVAL-MKI235KA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI235KA requirements.

6.How does Aetrix verify that STEVAL-MKI235KA is sourced from the original manufacturer or authorized distributors?

All STEVAL-MKI235KA 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-MKI235KA meets industry standards.

7.What is the process for return or replacement of STEVAL-MKI235KA?

All STEVAL-MKI235KA units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI235KA, 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-MKI235KA part is unused and in its original packaging.

Return procedure for STEVAL-MKI235KA:

1.Submit a request within 90 days.

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

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