W5500 TCP/IP Ethernet Network Interface Module – WIZ820IO Compatible

The W5500 Ethernet Network Module is a compact, high-performance hardware TCP/IP network interface designed for seamless integration into microcontroller-based projects. Built on the trusted W5500 chip, this module is fully compatible with the WIZ820IO standard, making it a go-to choice for makers, engineers, and developers who need reliable wired Ethernet connectivity.

Key Features

Full Hardware TCP/IP Stack: Offloads network processing from your microcontroller with the W5500's built-in TCP/IP stack — supporting TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE protocols.
SPI Interface: Communicates via high-speed SPI (up to 80 MHz), making it easy to connect to Arduino, STM32, Raspberry Pi, and other popular platforms.
8 Independent Sockets: Supports up to 8 simultaneous independent connections for versatile multi-channel communication.
WIZ820IO Compatible: Drop-in compatible with WIZ820IO pin layout for effortless upgrades and substitutions in existing designs.
10/100 Mbps Ethernet: Delivers fast and stable wired network speeds suitable for IoT devices, data logging, remote monitoring, and more.
3.3V I/O Voltage: Low-voltage operation ideal for modern microcontrollers, with an integrated LDO regulator for reliable power management.
Compact Form Factor: Small footprint makes it easy to embed into custom PCBs and enclosures.
RJ45 Connector Included: Ready to plug into any standard Ethernet network — no additional adapters required.

Specifications

Chip: WIZnet W5500
Protocol Support: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
SPI Clock Speed: Up to 80 MHz
Number of Sockets: 8
Network Speed: 10/100 Mbps
Operating Voltage: 3.3V
Interface: SPI (Mode 0, 3)
Connector: RJ45

Ideal Applications

Arduino / AVR / STM32 / ESP-based Ethernet projects
IoT sensor nodes and data loggers
Remote monitoring and control systems
Industrial automation and embedded networking
Smart home and DIY electronics prototyping

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Frequently Asked Questions

Q: What is the W5500 Ethernet Network Module and what does it do?

A: The W5500 is a hardwired TCP/IP Ethernet controller chip. This module integrates the W5500 with an RJ45 connector and supporting components to give your microcontroller project instant wired Ethernet connectivity via a simple SPI interface — no software TCP/IP stack required.

Q: Is the W5500 module compatible with Arduino?

A: Yes. The W5500 module is fully compatible with Arduino boards and other popular platforms like STM32 and Raspberry Pi. The WIZnet Ethernet library supports it natively, and the SPI interface makes wiring straightforward.

Q: What is WIZ820IO compatibility and why does it matter?

A: WIZ820IO is a well-established Ethernet module pinout standard by WIZnet. This W5500 module is pin-compatible with WIZ820IO, meaning you can use it as a direct drop-in replacement in designs originally built around that module — saving you time on redesign and prototyping.

Q: How many simultaneous network connections does the W5500 support?

A: The W5500 supports up to 8 independent, simultaneous socket connections, allowing your device to handle multiple network communication channels at the same time — ideal for IoT applications and multi-client server scenarios.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.