The W5100S with Ethernet ICs LQFP-48_7x7x05P RoHS is a highly integrated Internet-on-a-chip from Wiznet. It is developed for embedded applications in areas such as home automation, security, medical, smart phones and tablet PCs. This IC has a built-in 10/100 Ethernet PHY, supports 4KB receive and 4KB transmit buffer size, and is RoHS compliant. It is a 48-pin, Low-power Quad Flat Package with a 7x7x0.5mm body. The W5100S supports several advanced functions such as IPV6, UDP, ICMP Echo, and Modbus TCP/RTU. Furthermore, it provides an integrated solution for TCP and IP software, allowing users to develop their own customized protocol.