W5500 Ethernet Network Module SPI TCP/IP LAN for Arduino ESP32 STM32

🔧 W5500 Ethernet Network Module | AuscomTech

The W5500 Ethernet Network Module is a compact SPI-based LAN interface board designed to add reliable wired Ethernet connectivity to microcontroller and embedded projects.

Built around the W5500 hardwired TCP/IP Ethernet controller, it supports common network protocols in hardware, helping reduce processor load while providing stable 10Base-T / 100Base-TX network communication.

This module is well suited to Arduino, ESP32, STM32, Raspberry Pi, and other MCU-based systems requiring wired networking for IoT, automation, monitoring, control, and data communication applications.

⭐ Key Features

• W5500 Ethernet Controller – Hardwired TCP/IP stack improves efficiency and reduces firmware overhead on the host controller.
• SPI Interface – Fast serial interface for simple integration with a wide range of microcontrollers.
• 10/100 Ethernet Support – Embedded Ethernet PHY supports 10Base-T and 100Base-TX operation.
• Multiple Socket Support – Supports up to 8 independent sockets simultaneously for flexible network communication.
• Protocol Support – Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE.
• 3.3V Core with 5V Tolerance – Operates at 3.3V with 5V I/O signal tolerance for easier MCU interfacing.
• Low Power Features – Supports power-down mode and Wake-on-LAN over UDP.
• Status LED Outputs – Provides link and activity indication for easier diagnostics.

📊 Technical Specifications

• Controller IC: W5500
• Interface: SPI
• Supported Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
• Ethernet Standard: 10Base-T / 100Base-TX
• Ethernet PHY: Embedded
• Socket Channels: 8 independent sockets
• Buffer Memory: 32KB internal TX/RX buffer
• Operating Voltage: 3.3V
• I/O Signal Tolerance: 5V tolerant
• SPI Mode: Mode 0, 3
• Auto Negotiation: Full-duplex / half-duplex, 10M / 100M
• Power Features: Power-down support, network wake support
• LED Functions: Full/Half duplex, Link, Speed, Active
• Module Size: Approx. 55.1 × 28.1 mm
• Module Colour: Blue

🧩 Typical Applications

• Arduino and ESP32 wired networking projects
• STM32 Ethernet communication systems
• Industrial monitoring and data logging
• Home automation controllers
• IoT devices requiring stable LAN connectivity
• Embedded web server and network control applications
• SPI to Ethernet interface expansion

⚠️ Important Notes

• This is a wired Ethernet module and requires SPI connection to a compatible host controller.
• Driver/library support may be required depending on your platform and development environment.
• Not all boards expose the same SPI pins, so always confirm your target board pinout before wiring.
• IP fragmentation is not supported by the W5500 controller.
• Module only; microcontroller, cables, and other accessories are not included.

📦 Package Includes

• 1 × W5500 Ethernet Network Module

🔗 Recommended Accessories (Not Included)

• Dupont jumper wires – for SPI and power connections
• RJ45 Ethernet cable – for LAN connection
• Arduino or ESP32 development board – for control and communication
• Pin headers or soldering accessories – for installation and prototyping