W5500 TCP / IP SPI to LAN Ethernet Interface SPI to LAN / Ethernet Converter E-1014 80MHz high-speed SPI interface Built-in hardware TCPIP protocol stack, users need almost no knowledge of complex network protocols Support up to 8 Socket connections Support TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE protocol Integrated data link layer, physical layer Support power-down wake up Support high-speed serial peripheral interface (SPI mode 0~3) Internal 32K byte send and receive buffer Embedded 10BaseT/100BaseTX Ethernet Physical Layer (PHY) Support auto-negotiation (10/100-Based full/half-duplex) IP fragmentation is not supported 3.3V working voltage, I/O signal port 5V withstand voltage LED status display (full-duplex / half-duplex, network connection, network speed, active status) Ultra-small pin package for easily embedded applications Provide C application routines  

W5500 Ethernet shield is designed using the WIZnet W5500 chip. It supports both 3.3V & 5V. This Ethernet Shield is compatible with Arduino and ARM embed Platform. Features -Suppport 3.3V / 5V. -High Speed Ethernet controller W5500 chip. -SPI interface. -Internal 32Kbytes Tx/Rx buffer. -10/100 Ethernet PHY embedded. -Support Auto Negotiation (Full / Half duplex, 10 / 100-based). -Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE. -User Selectable GPIO pin. -Support SD-card slot for storage. -Support I2C, UART interface.