The W5500 Ethernet Shield is a high-performance network interface module designed to add reliable wired Ethernet connectivity to microcontroller development boards such as Arduino. Powered by the W5500 Ethernet controller, this shield integrates a complete TCP/IP stack and Ethernet PHY, enabling seamless network communication without burdening the host MCU. Supporting multiple networking protocols including TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE, the shield is ideal for IoT projects, industrial automation, data logging systems, remote monitoring, smart home applications, and embedded networking solutions. With support for 8 simultaneous sockets and a built-in 32KB buffer memory, the W5500 Ethernet Shield ensures stable and efficient data transmission over 10/100 Mbps Ethernet networks Features: Supports Hardwired TCP/IP protocols including TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE. Provides 8 independent sockets for simultaneous network connections. Integrated 10BaseT/100BaseTX Ethernet PHY for reliable wired communication. High-speed SPI interface compatible with SPI Mode 0 and Mode 3. Built-in 32KB memory for dedicated TX/RX buffering. Supports Auto-Negotiation for 10/100 Mbps full and half-duplex modes. Wake-on-LAN (WoL) support over UDP. Low-power Power Down mode for energy-efficient applications. 3.3V operating voltage with 5V I/O signal tolerance. Status LED outputs for Link, Speed, Activity, and Duplex indication. Specifications: Product Type : Ethernet Shield Controller IC : W5500 Communication Interface : SPI (Serial Peripheral Interface) SPI Modes : Mode 0, Mode 3 Ethernet Standard : 10BaseT / 100BaseTX Network Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE Socket Support : 8 Independent Sockets Buffer Memory : 32KB Internal TX/RX Memory Operating Voltage : 3.3V I/O Voltage Tolerance : 5V Compatible Ethernet PHY : Integrated 10/100 Mbps PHY Auto Negotiation : Supported (10/100 Mbps, Full/Half Duplex) Wake-on-LAN : Supported (UDP based) Power Mode : Power Down Mode Supported LED Indicators : Link, Speed, Activity, Duplex IP Fragmentation : Not Supported Package Type : 48-Pin LQFP Diamentions : 68 x 52 mm Weight : 25 g Package Includes: 1 x W5500 Ethernet Shield
Specifications
| Ethernet Controller | W5500 Hardwired TCP/IP Chip |
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| Network Speed | 10/100 Mbps Ethernet |
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| Socket Support | Up to 8 simultaneous sockets |
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| Buffer Memory | 32KB Internal TX/RX Buffer |
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| Interface | SPI (Mode 0 & Mode 3) |
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| Operating Voltage | 3.3V with 5V Tolerant I/O |
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| Shipping Weight | 0.043 kg |
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| Shipping Dimensions | 11 × 7 × 4 cm |
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