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W5100S is an embedded Internet controller designed as
a full hardwired TCP/IP with WIZnet technology

HS Code: 8542.31-1000

Country of Origin: Taiwan

W5100S integrates the Hardwired TCP/IP stack with 10/100 Ethernet MAC and PHY, it is truly the one-chip solution for stable internet connectivity. WIZnet’s hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE - and it has been proven through various applications over the last decade. W5100S provides internet connectivity to your embedded system by using SPI (Serial Peripheral Interface) or Parallel System BUS.

W5100S provides four independent SOCKETs to be used simultaneously and a 16KB internal memory for data communication. W5100S also provides WOL (Wake on LAN) and a Power Down Mode in order to reduce power consumption.

W5100S is a low-cost chip that exceeds its predecessor, W5100. Existing firmware using W5100 can be used on W5100S without modification.


W5100S has two types of packages, 48 Pin LQFP & QFN Lead-Free Package.

Find out more about W5100S

Reference Projects

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