W5500 TCP/IP Ethernet Module – WIZ820IO Compatible Network Interface

Add reliable wired networking to your embedded projects with the W5500 TCP/IP Ethernet Module, fully compatible with the WIZ820IO footprint. Built around the Wiznet W5500 chip, this compact module integrates a hardwired TCP/IP stack, making it straightforward to connect microcontrollers and development boards to a standard Ethernet network — no complex software stack required.

Key Features

Hardwired TCP/IP Stack: Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE protocols directly in hardware for fast, stable networking.
SPI Interface: High-speed SPI (up to 80 MHz) for seamless integration with Arduino, STM32, Raspberry Pi, and other popular platforms.
8 Independent Sockets: Run up to 8 simultaneous network connections for versatile multi-channel communication.
WIZ820IO Pin-Compatible: Drop-in replacement for WIZ820IO — perfect for upgrades or new designs using an established layout.
Integrated MAC & PHY: On-chip MAC and PHY reduce external component count and simplify PCB design.
Low Power Consumption: Efficient power design suitable for battery-sensitive or always-on embedded applications.
32KB TX/RX Buffer: Onboard memory ensures smooth data throughput even under sustained network load.
3.3V Operation: Compatible with 3.3V logic levels; 5V tolerant I/O pins for broad compatibility.

Specifications

Chip: Wiznet W5500
Interface: SPI (Mode 0, 3)
Network Speed: 10/100 Mbps
Operating Voltage: 3.3V
Max SPI Clock: 80 MHz
Simultaneous Sockets: 8
Buffer Memory: 32KB internal TX/RX
Form Factor: WIZ820IO-compatible pinout

Ideal Applications

IoT (Internet of Things) device connectivity
Arduino or STM32 Ethernet shield projects
Home automation and smart device networking
Industrial control systems with Ethernet requirements
Data logging with remote server communication
Embedded web servers and MQTT clients

What's in the Box

1 × W5500 TCP/IP Ethernet Module (WIZ820IO compatible)

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Frequently Asked Questions

Q: What is the W5500 TCP/IP Ethernet Module and what does it do?

A: The W5500 TCP/IP Ethernet Module is a compact network interface board based on the Wiznet W5500 chip. It provides a hardwired TCP/IP stack over a standard 10/100 Mbps Ethernet connection, enabling microcontrollers and development boards (such as Arduino or STM32) to communicate over a wired network without needing a software networking stack.

Q: Is the W5500 module compatible with Arduino?

A: Yes. The W5500 module communicates via SPI and is widely supported by Arduino libraries (including the official Ethernet2 library and third-party W5500 libraries). It is also compatible with STM32, Raspberry Pi, ESP32, and most other platforms that support SPI communication.

Q: What makes the W5500 module WIZ820IO compatible?

A: The W5500 module shares the same pinout and physical footprint as the WIZ820IO module, meaning it can be used as a direct drop-in replacement on existing PCB designs or adapter boards that were originally laid out for the WIZ820IO, saving redesign time and cost.

Q: How many network connections can the W5500 handle simultaneously?

A: The W5500 supports up to 8 independent hardware sockets at the same time, allowing your project to manage multiple simultaneous TCP or UDP connections — ideal for IoT hubs, web servers, or multi-channel data applications.

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.