Developed using the W3150A TCP/IP stack IC, the iEthernet W5100 10/100 Ethernet-controller IC includes a hard-wired TCP/IP core and a PHY (physical-layer) interface. This memory-mapped hardware device provides low-end microcontrollers with Internet capabilities at speeds as high as 25 Mbps. WIZnet designed the W5100, which costs $5.20 (2000).

Saelig, www.saelig.com