STMicroelectronics STEVAL-MKI198V1K

Overview

STEVAL-MKI198V1K from STMicroelectronics is an evaluation kit comprising a compact temperature probe with the STTS751 2.25 V low-voltage digital temperature sensor, a flat-cable interface, and the STEVAL-MKIGIBV1 DIL24 adapter board for connection to the STEVAL-MKI109V3 motherboard. It enables precise local temperature measurement with minimal thermal interference from adjacent electronics.

For engineers reviewing the STEVAL-MKI198V1K datasheet, STEVAL-MKI198V1K pinout, STEVAL-MKI198V1K application, or STEVAL-MKI198V1K equivalent, this kit supports rapid validation of STTS751-based thermal sensing in space-constrained PCB layouts, I²C-based sensor subsystem integration, and GUI-driven characterization using ST's Unico software.

Technical Context

The kit implements a two-stage hardware interface: the STTS751 sensor (in 6-lead DFN package) is mounted on a thin flexible probe, connected via flat cable to the STEVAL-MKIGIBV1 adapter board, which provides full pin access through a standard DIL24 socket footprint. Power is supplied at 2.25–3.6 V with integrated decoupling (1 µF + 100 nF).

Communication uses I²C (SCL/SDA), with interrupt output (INT1) routed to the motherboard. The adapter board includes pull-up resistors (33 kΩ on SDA, 10 kΩ on INT1) and configurable jumpers (JP1/JP2) for signal routing compatibility with the STM32F401VET6-based STEVAL-MKI109V3 motherboard.

Key Specifications

Availability

STEVAL-MKI198V1K is available at Aetrix Electronics and suitable for thermal validation in embedded sensor nodes, industrial equipment commissioning, medical device prototyping, and automotive cabin climate subsystem testing requiring stable component supply and traceable evaluation hardware.

Supply support for STEVAL-MKI198V1K 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 Sensors Evaluation Platform family, engineered to accelerate development of high-accuracy, low-power environmental sensing systems using ST's proprietary MEMS and digital sensor ICs.

FAQ

Does STEVAL-MKI198V1K require external firmware or drivers to operate?

No. The kit interfaces directly with the STEVAL-MKI109V3 motherboard's STM32F401VET6 MCU, which runs preloaded firmware to communicate with the STTS751 via I²C. Users interact exclusively through ST's free Unico GUI or custom host-side software-no driver installation or firmware flashing is needed on the evaluation board itself.

Can STEVAL-MKI198V1K be used without the STEVAL-MKI109V3 motherboard?

No. The kit lacks onboard processing or USB interface. It relies entirely on the STEVAL-MKI109V3 motherboard for I²C bridging, power regulation, and PC communication. The STEVAL-MKIGIBV1 adapter board has no independent functionality-it serves only as a passive pin-mapped interface between the probe and the motherboard.

What is the maximum operating temperature range of the probe assembly?

The STTS751 sensor itself operates from –40 °C to +125 °C, but the flexible probe assembly (including flat cable and solder joints) is rated for –20 °C to +85 °C per DB3779 Rev 1. Exceeding this range may compromise mechanical integrity or calibration stability, even if the IC remains functional.

Is the STTS751 on the probe replaceable or upgradeable?

No. The STTS751 is permanently mounted on the probe's flex PCB using DFN-6 packaging and is not socketed or rework-friendly. Replacement requires full probe assembly substitution; ST does not provide standalone probe-only spares or alternate sensor variants for this kit.