W5500 Ethernet Module — SPI, Hardwired TCP/IP

W5500 Ethernet Module — SPI, Hardwired TCP/IP

The W5500 Ethernet module adds wired 10/100Mbps Ethernet connectivity to any microcontroller with an SPI interface. The W5500 chip features a hardwired TCP/IP stack — handling TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE in hardware, offloading the host MCU from network processing. Supports 8 independent sockets simultaneously. Compatible with Arduino, ESP32, Raspberry Pi, and any 3.3V/5V SPI microcontroller.

Key Specifications

• Chip: WIZnet W5500 | Speed: 10/100Mbps
• Interface: SPI (up to 80MHz) | Sockets: 8 independent
• Protocols: TCP / UDP / ICMP / IPv4 / ARP / IGMP / PPPoE (hardwired)
• Operating voltage: 3.3V | I/O: 3.3V / 5V compatible
• Connector: RJ45 with integrated magnetics and LEDs
• Compliance: RoHS compliant

Why Choose This?

• ✅ Hardwired TCP/IP — no software TCP/IP stack needed, minimal MCU overhead
• ✅ 8 simultaneous sockets — run multiple TCP/UDP connections at once
• ✅ 3.3V/5V compatible — works with Arduino Uno, ESP32, STM32 and Raspberry Pi
• ✅ Arduino Ethernet library compatible — drop-in replacement for W5100-based shields

Typical Applications

• Arduino and ESP32 wired Ethernet IoT projects
• Industrial Ethernet sensor and actuator nodes
• Web server and MQTT client over wired Ethernet
• Reliable network connections where WiFi is unsuitable

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