STMicroelectronics STEVAL-MKI201V1K

Overview

STEVAL-MKI201V1K from STMicroelectronics is an evaluation kit comprising an STTS75 digital temperature sensor mounted on a thin thermal probe, connected via flat cable to the STEVAL-MKIGIBV1 DIL24 adapter board for interfacing with STEVAL-MKI109V3 motherboards. It delivers ±0.5°C accuracy from –40°C to +125°C, features delta-sigma ADC conversion, I²C interface, and integrated thermal watchdog functionality - enabling precise, localized temperature monitoring in compact electronics.

For engineers reviewing the STEVAL-MKI201V1K datasheet, STEVAL-MKI201V1K pinout, STEVAL-MKI201V1K application, or STEVAL-MKI201V1K equivalent, key selection considerations include probe-mount thermal isolation, I²C address configuration (A0–A2 pins), interrupt-driven thermal event detection (INT1), and compatibility with STM32F401-based STEVAL-MKI109V3 host platforms.

Technical Context

The kit implements a two-board architecture: the probe board hosts the STTS75 in a 8-lead DFN package (2mm × 2mm), while the adapter board routes all STTS75 signals-including SCL/SDA, INT1, and address pins A0–A2-to a standard DIL24 socket. Power is conditioned by 1 µF and 100 nF decoupling capacitors on VDD.

It relies on the STEVAL-MKI109V3 motherboard's STM32F401VET6 microcontroller to handle I²C communication, real-time data streaming, and GUI interaction via ST's Unico software. The STTS75's thermal watchdog operates independently of host polling, asserting INT1 on overtemperature or under-temperature events.

Key Specifications

Availability

STEVAL-MKI201V1K is available at Aetrix Electronics and suitable for thermal validation, embedded system debug, and precision temperature profiling in industrial controllers, medical diagnostics equipment, and power supply thermal management requiring stable component supply and rapid prototyping support.

Supply support for STEVAL-MKI201V1K 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 applications.

This kit belongs to ST's MEMS and sensor evaluation platform family, engineered to accelerate development of thermal-aware systems by providing plug-and-play hardware, GUI software (Unico), and reference firmware for STM32 host integration.

FAQ

Does STEVAL-MKI201V1K require external firmware to operate?

No. The kit is fully functional out-of-the-box when connected to a STEVAL-MKI109V3 motherboard running ST's Unico GUI software. The STM32F401VET6 on the motherboard executes preloaded firmware that handles I²C initialization, register reads, and real-time temperature streaming - no user code deployment is needed for basic operation.

Can STEVAL-MKI201V1K be used without the STEVAL-MKI109V3 motherboard?

Not directly. The adapter board (STEVAL-MKIGIBV1) provides only signal routing and decoupling; it lacks MCU logic or USB interface. To extract data, the DIL24 socket must connect to a compatible host - specifically the STEVAL-MKI109V3 or another STM32F401-based platform with matching pinout and Unico-compatible firmware.

What is the purpose of the flat cable between the probe and adapter board?

The flat cable electrically isolates the STTS75 sensor from PCB heat sources by physically separating it onto a thin, low-mass probe. This minimizes thermal conduction from adjacent components, ensuring measurements reflect ambient or target surface temperature - not board-level self-heating - critical for calibration-grade thermal analysis.

How is the STTS75's I²C address configured on this kit?

A0, A1, and A2 pins are routed to solder jumpers (R1, R2, R3) on the adapter board, allowing hardware-selectable I²C addresses (0x90–0x9E). Default configuration uses 0x90 (all address pins grounded), but each jumper can be opened or bridged to set individual bits - enabling multi-sensor deployments on a single I²C bus without address conflict.