Technical summary
The miniature Ethernet network module Wiznet W5500 (WIZ850io) is a high-performance, compact solution for adding reliable Ethernet connectivity to embedded systems. Featuring the hardwired W5500 TCP/IP chip with integrated PHY, transformer and RJ45 connector, it eliminates the need for complex hardware interfaces. With a high-speed SPI interface of 80 MHz, an internal buffer memory of 32 Ko and support for up to 8 simultaneous connections, this module guarantees stable and efficient communication.
It supports many protocols, including TCP, UDP, ICMP, IPv4, ARP, IGMP and PPPoE, which makes it ideal for connected devices, data loggers and network controllers. Hardware-compatible with the WIZ820io, it allows an easy upgrade thanks to slight firmware modifications, offering an optimal balance between performance, reliability and ease of integration.
Note: Product images are for illustration purposes only and may differ from the actual product.
Main Features
- Compact design: Integrated transformer and RJ45 connector in a single module for space-constrained applications.
- Hardware TCP/IP stack: Reduces the microcontroller workload by handling lower-layer protocol processing.
- High-speed SPI interface: Operates up to 80 MHz for fast and efficient data transfer.
- Multi-socket support: Up to 8 simultaneous connections for parallel network tasks.
- Large buffer memory: Built-in 32KB TX/RX buffer memory for smooth and reliable data communication.
- Extensive protocol support: Compatible with TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE.
- Sleep mode: Energy-efficient operation with wake-up support.
- Easy migration: Hardware-compatible with WIZ820io, only a firmware modification is needed.
Applications
- IoT devices: Give embedded systems reliable Ethernet connectivity.
- Data loggers: Guarantee stable real-time data transfer to the cloud or local servers.
- Industrial automation: Suitable for programmable logic controllers, human-machine interfaces and controllers requiring network access.
- Smart home systems: Add wired networking to your home automation projects.
- Educational projects: Ideal for students and makers developing Internet-connected systems.
- Embedded network controllers: For use in projects requiring stable Ethernet without operating system overhead.
Technical Specifications
| Features | Detail |
|---|---|
| Model | WIZ850io (Wiznet W5500) |
| Ethernet standard | 10/100 Base-T |
| Supported protocols | TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE |
| Interface | High-speed SPI (80 MHz, mode 0–3) |
| Socket connections | Up to 8 simultaneous |
| Internal buffer | 32KB TX/RX |
| Power modes | Normal mode and power-down with wake-up support |
| Compatibility | Hardware-compatible with WIZ820io |
| Onboard components | W5500 chip, transformer, RJ45 |
| Shipping weight | 0.0108 kg |
| Shipping dimensions | 8 × 9 × 3 cm |
