Introduction: WIZnet is a well-known semiconductor company located in Seoul, South Korea, founded in 1998. At present, three subsidiaries have been established worldwide, located in California, USA, Frankfurt, Germany, and Hong Kong, China. The company's main business includes the research and development of fully hardware TCP/IP Ethernet chips, based on the global market, providing more concise, efficient, secure, and stable Ethernet access solutions for embedded network terminal devices such as microcontrollers. Its unique all hardware TCP/IP protocol stack technology enables Ethernet series chips to be widely used in industrial automation, financial equipment, smart homes, security and other fields. WIZnet's products mainly include full hardware TCP/IP Ethernet single-chip, Soc full hardware TCP/IP controller, network module, wireless module, serial to Ethernet module, S2E module, open-source hardware, widely used in smart grids (overseas meters/type II collectors, grid cabinet boards, substation protection, transmission and distribution management), financial instruments (POS machines, mini printers, etc.), ATM), Security access control (access control system, one card, elevator control, anti-theft/disaster alarm), gateway equipment (industrial automation, measuring instruments, smart home, PLC) and many other fields.