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How to Wire W5500 to STM32F103 for an Industrial IoT Ethernet Node?

This repository provides a schematic PDF for connecting an STM32F103 microcontroller to a WIZnet W5500 Ethernet controller.

gavinchang

Published July 24, 2026

Original author: bond007Original source (new tab)

How to Wire W5500 to STM32F103 for an Industrial IoT Ethernet Node?

Project description

How to Wire W5500 to STM32F103 for an Industrial IoT Ethernet Node? Summary This repository provides a schematic PDF for connecting an STM32F103 microcontroller to a WIZnet W5500 Ethernet controller. In an Industrial IoT design, the STM32F103 supplies application control and communicates with the W5500 through SPI, while the W5500 provides the Ethernet MAC, PHY, hardwired TCP/IP engine, socket state, and packet buffering. The repository is useful as a circuit reference, but its schematic should be checked against current WIZnet reference designs before being used in production. What the…

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