STMicroelectronics STEVAL-MKI202V1K

Overview

STEVAL-MKI202V1K from STMicroelectronics is a ready-to-use temperature probe evaluation kit based on the STDS75 digital temperature sensor and thermal watchdog, featuring I²C interface, ±0.5 °C accuracy over –25 °C to +100 °C, 12-bit resolution, and programmable over/under-temperature interrupt output. It interfaces directly with the STEVAL-MKI109V3 motherboard via the STEVAL-MKIGIBV1 adapter board for PC-based thermal monitoring in embedded sensor validation.

For engineers reviewing the STEVAL-MKI202V1K datasheet, STEVAL-MKI202V1K pinout, STEVAL-MKI202V1K application, or STEVAL-MKI202V1K equivalent, key selection considerations include I²C compatibility with STM32F401VET6-based host boards, decoupled VDD supply (100 nF + 1 µF), DIL-24 socket footprint, and Unico GUI software support for real-time temperature logging and threshold configuration.

Technical Context

The kit implements a two-board architecture: a miniature STDS75-equipped probe connects via flat cable to the STEVAL-MKIGIBV1 adapter, which provides full STDS75 pin access and level-shifted I²C signals (SCL/SDA) and interrupt (INT1) routing to the STEVAL-MKI109V3's DIL-24 header. The STDS75 operates from 2.7 V to 5.5 V and supports 100 kHz / 400 kHz I²C modes.

Signal integrity is maintained by on-board decoupling (100 nF ceramic + 1 µF tantalum on VDD), zero-ohm jumpers (R1, R2) for configurable INT1 routing, and DNM resistor (R3) for OS/INT pin biasing. The probe's low thermal mass enables localized temperature measurement without conduction interference from adjacent PCBs or ICs.

Key Specifications

Availability

STEVAL-MKI202V1K is available at Aetrix Electronics and suitable for embedded sensor validation, thermal management prototyping, and industrial temperature monitoring requiring stable component supply and rapid GUI-based evaluation.

Supply support for STEVAL-MKI202V1K 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 MEMS and sensor evaluation platform family, engineered to accelerate development of thermal sensing systems using ST's precision digital temperature sensors and STM32-based host interfaces.

FAQ

Does STEVAL-MKI202V1K require external firmware or driver installation?

No. The kit operates plug-and-play with the STEVAL-MKI109V3 motherboard and ST's free Unico GUI software, which handles I²C communication, register configuration, and real-time temperature display without custom firmware. The STM32F401VET6 on the motherboard executes preloaded firmware that abstracts low-level sensor access.

Can STEVAL-MKI202V1K be used independently of STEVAL-MKI109V3?

No. The STEVAL-MKI202V1K probe and STEVAL-MKIGIBV1 adapter lack onboard MCU or USB interface; they rely entirely on the STEVAL-MKI109V3 for power, I²C bridging, and PC communication. No standalone operation or alternative host interface is supported per documentation.

What is the maximum cable length between the probe and STEVAL-MKIGIBV1 adapter?

The flat cable supplied is 150 mm long and optimized for signal integrity at 400 kHz I²C speeds. Extending beyond this length risks SCL/SDA rise time degradation and noise-induced communication errors; no extended-cable variant or repeater support is specified in DB3792.

Is the STDS75 on the probe calibrated at the factory?

Yes. The STDS75 sensor is factory-calibrated for accuracy of ±0.5 °C over –25 °C to +100 °C, with calibration coefficients stored in on-chip EEPROM. No user calibration procedure is required or supported; readings are valid immediately after power-up and I²C initialization.