STMicroelectronics EVALKITST75MM-1

Overview

EVALKITST75MM-1 from STMicroelectronics is a METERS AND MORE®-compliant power line communication (PLC) demonstration and development kit built around the ST75MM system-on-chip, featuring a dual-board architecture (EVALST75MM-1 PLC board + EVLALTAIR900-M1 7.5 W SMPS power supply), integrated STM32 microcontroller for standalone node control, USB/JTAG programming interface, and CENELEC EN50065 compliance in the 95–148.5 kHz band.

For engineers reviewing the EVALKITST75MM-1 datasheet, EVALKITST75MM-1 pinout, EVALKITST75MM-1 application, or EVALKITST75MM-1 equivalent, this kit supports rapid evaluation of PLC performance across AC mains networks, firmware development for METERS AND MORE-compliant metering nodes, interoperability testing between multiple PLC nodes, and validation of EN50065 spectral mask compliance in field-deployable configurations.

Technical Context

The kit implements a complete, self-contained PLC node using the ST75MM SoC - a single-chip solution integrating analog front-end, digital baseband processor, and METERS AND MORE protocol stack - paired with an ALTAIR04-900-based wide-input SMPS delivering regulated power to both PLC and MCU subsystems. The embedded STM32 manages ST75MM initialization, frame handling, and host interface bridging.

Communication occurs over AC mains via coupling circuitry compliant with CENELEC EN50065 Class A limits (95–148.5 kHz), supporting bidirectional data exchange between co-located nodes without external modems or gateways. USB CDC and SWD/JTAG interfaces enable real-time debug, firmware update, and protocol stack customization.

Key Specifications

Availability

EVALKITST75MM-1 is available at Aetrix Electronics and suitable for smart metering infrastructure validation, utility-grade PLC interoperability testing, and EN50065-compliant field trial deployment requiring stable component supply and long-term design support.

Supply support for EVALKITST75MM-1 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, power ICs, sensors, and analog/mixed-signal solutions for industrial, automotive, and smart infrastructure applications.

This kit belongs to ST's Power Line Communication Solutions product line, engineered specifically to accelerate development and certification of METERS AND MORE-compliant smart grid endpoints including electricity, gas, and water meters.

FAQ

Is EVALKITST75MM-1 compatible with other PLC standards such as G3-PLC or PRIME?

No. EVALKITST75MM-1 is purpose-built for METERS AND MORE v3.0 compliance only. Its ST75MM SoC firmware, analog front-end tuning, and spectral filtering are fixed to the 95–148.5 kHz CENELEC A band and protocol stack - it does not support G3-PLC (CENELEC A/B/C bands with OFDM) or PRIME (CENELEC A band with different framing and FEC).

Can the onboard STM32 be reprogrammed with custom firmware?

Yes. The STM32 is accessible via standard SWD/JTAG and USB CDC interfaces. ST provides reference firmware, HAL drivers, and the ST75MM SDK under NDA, enabling full customization of node behavior, data routing, security policies, and host communication protocols without hardware modification.

Does the kit include coupling capacitors and line filters required for EN50065 compliance?

Yes. The EVALST75MM-1 board integrates all mandatory passive components - including line-to-line and line-to-neutral coupling capacitors, common-mode chokes, and EMI filtering - pre-tuned and validated to meet EN50065 Class A conducted emission limits during PLC transmission.

What is the maximum supported PLC data rate on this evaluation kit?

The ST75MM SoC delivers a physical layer data rate of up to 12.5 kbps in METERS AND MORE mode. Application-layer throughput depends on frame overhead, retry policy, and network topology but typically achieves 4–6 kbps end-to-end for meter reading packets in multi-node mains environments.