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STMicroelectronics STEVAL-MKI081V1

Name: STEVAL-MKI081V1
Brand: STMicroelectronics
SKU: STEVAL-MKI081V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STEVAL-MKI081V1

Manufacturer:: STMicroelectronics

Category:: Sensor Evaluation Boards

Package:

Datasheet:: STEVAL-MKI081V1.pdf

Description:: BOARD DEMO MEMS LPR403AL

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,641

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Product details

Overview

STEVAL-MKI081V1 from STMicroelectronics is a MEMS demonstration board built around the LPR403AL dual-axis analog gyroscope, featuring configurable analog (AWM) and digital (DWM) operating modes, ST7 microcontroller-based sensor-to-PC interface, and USB-powered operation with dedicated analog output connector and GUI-supported digital acquisition.

For engineers reviewing the STEVAL-MKI081V1 datasheet, STEVAL-MKI081V1 pinout, STEVAL-MKI081V1 application, or STEVAL-MKI081V1 equivalent, this board supports rapid evaluation of angular rate sensing in inertial measurement, motion control prototyping, and embedded orientation feedback systems requiring direct analog signal access or host-controlled digital readout.

Technical Context

The board implements two mutually exclusive operational states: in Analog Working Mode (AWM), the ST7 microcontroller is disabled and raw analog outputs (X/Y axis voltage signals referenced to VREF) are routed directly to header pins; in Digital Working Mode (DWM), the ST7 enables SPI-like serial communication (via ICCCLK/ICCDATA/ICCSEL lines), real-time signal digitization, and bidirectional control of sensor configuration pins including reset and mode selection.

Signal conditioning includes on-board 2.5 V reference (6REF), current measurement circuitry for ICCSEL-driven bias control, and selectable power supply paths via USB or external connector - with automatic AWM default on power-up and DWM activation requiring explicit microcontroller initialization through host software.

Key Specifications

Parameter	Value and Actual Design Meaning
Sensor Core	LPR403AL dual-axis analog gyroscope with ±300°/s full-scale range and ratiometric analog output
Operating Modes	Analog Working Mode (AWM): direct analog output; Digital Working Mode (DWM): ST7-mediated digital acquisition and control
Interface Protocol	Custom serial interface using ICCCLK (clock), ICCDATA (bidirectional data), ICCSEL (chip select) - not standard SPI/I²C
Reference Voltage	2.5 V internal reference (6REF) used for analog output scaling and ADC reference in DWM
Power Input	USB 5 V or external 5 V supply; automatic AWM entry on power-up without host interaction
Host Connectivity	USB-to-serial bridge (via onboard ST7 UART) enabling PC GUI communication and firmware upload capability

Availability

STEVAL-MKI081V1 is available at Aetrix Electronics and suitable for inertial sensor evaluation, academic MEMS labs, industrial motion prototype validation, and embedded navigation algorithm development requiring stable component supply and legacy design support.

Supply support for STEVAL-MKI081V1 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 with emphasis on industrial and consumer system integration.

This board belongs to ST's STEVAL (ST Evaluation) platform family, developed specifically to accelerate hands-on validation of MEMS motion sensors and simplify transition from concept to firmware-integrated implementation.

FAQ

What are the power supply requirements for STEVAL-MKI081V1?

The board operates from 5 V supplied either via USB port or external connector. No external voltage regulation is needed - onboard circuitry derives 2.5 V reference and powers the LPR403AL and ST7. Power sequencing defaults to Analog Working Mode unless host software explicitly enables the microcontroller for Digital Working Mode.

Does STEVAL-MKI081V1 support standard communication protocols like I²C or SPI?

No - it uses a proprietary three-wire interface (ICCCLK, ICCDATA, ICCSEL) managed by the ST7 microcontroller. This interface is not electrically or logically compatible with I²C or SPI. Communication with the PC occurs over USB-emulated serial, and sensor data exchange in DWM relies on ST-provided GUI or custom firmware routines.

Can the LPR403AL sensor be replaced with another gyroscope on this board?

No - the board is specifically laid out for the LPR403AL's pinout, analog output structure, and biasing network. There are no footprint alternatives or jumper options for sensor substitution. The PCB routing, reference voltage, and signal conditioning are optimized exclusively for this device.

Is STEVAL-MKI081V1 still recommended for new designs?

ST has marked this board as obsolete per its official documentation (Doc ID 17683 Rev 1, August 2010). While functional and supported for legacy evaluation, ST recommends newer platforms such as the STEVAL-MKI109V3 or iNEMO evaluation kits for current development due to enhanced features, active support, and updated sensor generations.

STEVAL-MKI081V1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: MEMS

Packaging:: Bulk

Product Status:: Obsolete

Sensor Type:: Gyroscope, 2 Axis

Sensing Range:: ±30°/sec

Interface:: Analog and Digital

Sensitivity:: 33.3mV/°/s

Voltage - Supply:: 5V, USB

Embedded:: Yes, MCU, 8-Bit

Contents:: Board(s)

Utilized IC / Part:: LPR403AL

STEVAL-MKI081V1 FAQ

1.How can I place an order for STEVAL-MKI081V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-MKI081V1 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-MKI081V1 reliable?

The price and inventory of STEVAL-MKI081V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI081V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-MKI081V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI081V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-MKI081V1?

STEVAL-MKI081V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-MKI081V1 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-MKI081V1?

For technical support, including STEVAL-MKI081V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI081V1 requirements.

6.How does Aetrix verify that STEVAL-MKI081V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-MKI081V1 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-MKI081V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-MKI081V1?

All STEVAL-MKI081V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI081V1, 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-MKI081V1 part is unused and in its original packaging.

Return procedure for STEVAL-MKI081V1:

1.Submit a request within 90 days.

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

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