STMicroelectronics STEVAL-IFW001V1

Overview

STEVAL-IFW001V1 from STMicroelectronics is a real-time Ethernet slave node demonstration board built around the STR912FAW44 32-bit ARM966E-S™ microcontroller operating at 96 MHz, featuring dual E-STE101P Ethernet transceivers with MII support, RJ45 connectors with embedded LEDs, and industrial I/O expansion capability for CAN, motor control, high-side driver, and CLT/PCLT interfaces.

For engineers reviewing the STEVAL-IFW001V1 datasheet, STEVAL-IFW001V1 pinout, STEVAL-IFW001V1 application, or STEVAL-IFW001V1 equivalent, this board serves as a hardware platform for evaluating real-time industrial Ethernet protocols-including EtherCAT and POWERLINK-via configurable MII, SPI, I²C, UART, and EMI interfaces, with daisy-chain topology support for factory automation fieldbus systems.

Technical Context

The board implements a deterministic real-time slave node architecture using the STR912FAW44 MCU, which integrates an ARM966E-S™ core with on-chip flash, SRAM, and peripheral controllers optimized for industrial communication stacks. It supports two independent MII interfaces (MII_1 and MII_2), each connected to an E-STE101P PHY with selectable MII addresses (up to 32) and MDIO-managed register access.

Power delivery uses the L5973AD DC-DC converter (6–30 V input) for system supply and LF18xDT for 1.8 V core voltage regulation. Industrial interfacing is enabled through dedicated headers: CN3 (AC motor control), CN10 (SPI HSD), CN11 (CLT/PCLT termination), and CN12 (CAN), all electrically isolated per functional domain and referenced to separate ground planes.

Key Specifications

Availability

STEVAL-IFW001V1 is available at Aetrix Electronics and suitable for industrial automation prototyping, real-time Ethernet protocol evaluation, and factory floor node development requiring stable component supply and long-term design continuity.

Supply support for STEVAL-IFW001V1 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, specializing in microcontrollers, power management, analog, MEMS, and automotive ICs with strong industrial and embedded systems focus.

The STEVAL-IFW001V1 belongs to ST's ST evaluation board product line, designed specifically to accelerate adoption of real-time industrial Ethernet protocols by providing validated hardware reference platforms with documented interface mappings and extension compatibility.

FAQ

What real-time Ethernet protocols does STEVAL-IFW001V1 support out of the box?

The board itself does not include preloaded protocol stacks but provides the complete hardware foundation-dual MII interfaces, deterministic STR912FAW44 timing, and extension headers-for implementing EtherCAT, POWERLINK, or other real-time Ethernet protocols. Protocol firmware must be developed or ported separately using ST's STR9 software libraries and third-party stack providers.

Can STEVAL-IFW001V1 operate as a standalone slave node without additional modules?

No-it requires at least one compatible extension module (e.g., FPGA-based for EtherCAT or microcontroller-based for POWERLINK) connected via MII, SPI, or EMI to function as a complete real-time slave node. The base board provides only PHY connectivity, MCU resources, and I/O routing-not protocol-specific logic or physical layer adaptation.

Does STEVAL-IFW001V1 support Power over Ethernet (PoE)?

No. The board lacks PoE circuitry (IEEE 802.3af/at compliance, DC-DC isolation, signature detection). Its Ethernet transceivers (E-STE101P) are data-only PHYs; power is supplied separately via the 6–30 V DC barrel jack or terminal block (CN5).

Is JTAG debugging supported, and what tools are required?

Yes-JTAG is implemented via CN1 (14-pin ARM-standard connector) and fully supports SWD and JTAG modes. Compatible debug probes include ST-LINK/V2, Segger J-Link, and ARM Keil ULINK; no additional level-shifting or adapters are needed for standard 3.3 V signaling.