Network Modules

Unveil the potential of your projects with our Network Modules. Offering a range of connectivity options, they are the ideal choice for building efficient and scalable network applications.

Network Modules
WIZ812MJ is the network module that includes W5100 (TCP/IP, MAC & PHY) & MAG-JACK (RJ45 with X’FMR) with other glue logics. It can be used as a component and no effort is required to interface W5100 & MAG Jack. The WIZ812MJ is an ideal option for users who want to develop their Internet enabling systems rapidly.



The WIZ812MJ network module is engineered to provide an efficient and streamlined approach to integrating Internet connectivity into various projects and devices. It features the W5100 chip, which encompasses a complete TCP/IP stack along with MAC and PHY interfaces, facilitating robust and reliable network communication. This module is especially designed for quick and effortless integration, incorporating a MAG-JACK (RJ45 with transformer) that eliminates the complexity typically associated with networking hardware setups. Its ease of use and comprehensive feature set make it an excellent option for developers aiming to rapidly deploy Internet-connected systems. Key Specifications: Core: W5100 (integrated TCP/IP, MAC & PHY) Interfaces: SPI, 8-bit bus; Ethernet via RJ45 Operational Temperature: -40 to 85°C Size: 55.5 x 25 x 23.5 mm Features: Simplified integration without the need for complex hardware design, supports MCU BUS and high-speed SPI interface, 4 hardware sockets for versatile networking capabilities Description: The WIZ812MJ module offers a plug-and-play solution that significantly reduces development time for adding Ethernet connectivity. By leveraging the W5100 chip and MAG-JACK, it ensures a reliable network interface that is both simple to integrate and capable of supporting multiple network connections simultaneously. This module is designed for flexibility, accommodating both MCU BUS and high-speed SPI interfaces, which allows for easy connection to a wide range of microcontrollers and processing units. Its ability to support up to 4 hardware sockets makes it suitable for applications requiring concurrent network communications. Applications: Ideal for a wide range of applications, from IoT devices and smart home systems to industrial controls, the WIZ812MJ provides a reliable and straightforward solution for rapidly incorporating network functionality into various projects.


  • Plug-in Network Module
  • Usable without H/W design for W5100, transformer & RJ-45
  • Fast evaluation for W5100 & MCU in the target board
  • Support MCU BUS & high speed SPI interface
  • Support 4 hardware sockets
  • Operation Temperature : -40 ~ 85℃
  • H/W design feature : refer the comparison table in the below