Hardwired TCP/IP Ethernet ICs & PoE Modules
WIZnet is a renowned Korean semiconductor company known worldwide for its patented "hardwired TCP/IP stack" technology. The flagship W5500 is widely adopted in Arduino, Raspberry Pi, and industrial embedded communities. Product lines include Ethernet controller ICs, network modules, and PoE powered device modules for Industrial IoT, IP cameras, factory automation, and smart home applications.
Official WebsiteW5500 is WIZnet's flagship Ethernet controller with a unique hardwired TCP/IP stack, enabling direct network connectivity without software TCP/IP implementation. Connects to the host MCU via SPI, features 32KB TX/RX buffer, supports up to 8 sockets — the most widely adopted Ethernet chip in the Arduino/Raspberry Pi ecosystem.
W5100S is an enhanced version of W5100, supporting both SPI and parallel interfaces with 16KB TX/RX buffer and 4 sockets. Adds SOCKET-less commands, Wake on LAN (WOL), and PHY power-down mode compared to W5100 — ideal for embedded systems requiring a parallel bus interface.
WIZPoE-P1 is a WIZnet IEEE 802.3af/at standard PoE Powered Device (PD) module that draws power directly from the Ethernet cable, outputting 5V at up to 8W — no separate power cable needed. Suitable for IP cameras, industrial sensors, APs, access control devices, and other PoE-powered applications.