W5300 Embedded Ethernet Controller WIZnet W5300 Hardwired Network Protocol Embedded Ethernet Controller is a 0.18μm CMOS technology single chip integrating a 10/100 Ethernet controller, MAC, and TCP/IP. W5300 is designed for Internet embedded applications where easy implementation, stability, high performance, and effective cost are required. WIZnet W5300 Hardwired Network Protocol Embedded Ethernet Controller supports communication protocols such as TCP, UDP, IPv4, ICMP, IGMP, ARP, and PPPoE. In order to provide high-performing data communication, the W5300's memory is extended to 128kb and the module supports a 16bit bus interface. Users can utilize 8 independent hardware sockets for high-speed data communication.