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The W5500 SPI to Ethernet Hardware TCP/IP Network Module is a high-performance, compact network interface breakout designed to bring stable internet connectivity to resource-constrained microcontrollers. Traditional software-driven Ethernet solutions require massive firmware libraries to compile network protocol layers, consuming significant program memory and rendering basic 8-bit or 32-bit MCUs vulnerable to network layer crashes and malicious overflow vulnerabilities. The W5500 bypasses this bottleneck entirely by embedding a comprehensive, fully hardwired TCP/IP stack directly into its silicon gates.

Equipped with an integrated 10/100 Base-TX Ethernet MAC and physical layer transceiver (PHY), this module supports auto-negotiation to seamlessly lock onto full or half-duplex network pipelines. It includes an internal 32 Kilobyte TX/RX buffer memory cache, allowing it to host up to 8 independent network sockets simultaneously. This enables your project to manage an active web server, check an NTP time register, and stream sensor data via MQTT at the exact same time without dropping data packets.

Key Features & Benefits:

• Hardwired Protocol Engine: Processes TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE automatically in hardware, protecting your embedded projects from OS crash dependencies.

• Veloce 80MHz SPI Interface: Supports rapid data transfers via high-speed SPI (Modes 0 and 3) with a brand-new, highly efficient frame protocol that drastically lowers communication latencies.

• Integrated RJ45 Magjack: Outfitted with a premium RJ45 connector featuring built-in isolation transformers and dual status indicator LEDs (Link and Activity) for fast physical-layer troubleshooting.

• Smart Low-Power & WOL Modes: Features built-in Power Down logic and Wake on LAN (WOL) over UDP functionality to reduce battery usage in sleeping IoT sensor arrays.

Technical Specifications