[RE] W5100 Ethernet Module
This W5100 module is completely compatibale with Arduino Ethernet Shield, it is very easy to use it.

Before : https://maker.wiznet.io/taylor/resellers/w5100%2Dethernet%2Dmodule/?page=20&sercateidx=1&serob=0
Original : https://www.emartee.com/product/42080/W5100%20Ethernet%20Module
Author : stmsky
Published On : unknown
This content was created with the assistance of ChatGPT, an artificial intelligence language model developed by OpenAI.
The W5100 module is a powerful and versatile Ethernet interface that is fully compatible with the Arduino Ethernet Shield, making it incredibly easy to use in your projects. It is a highly integrated and cost-effective solution that is perfect for embedded systems that require stable and high-performance network connectivity.
With the W5100 module, you can access the internet without the need for an operating system, and it is fully compliant with IEEE802.3 10Base-T and 802.3u 100BASE-TX standards. The module integrates all the necessary hardware and TCP/IP protocol stack, including the Ethernet media access layer (MAC) and Physical Layer (PHY). The built-in hardware TCP/IP protocol stack supports a wide range of protocols, including TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE, all of which have been thoroughly tested and verified over many years.
Furthermore, the W5100 module includes 16KB of internal memory for data transmission, making it an incredibly efficient and reliable solution for your networking needs. When using the W5100 module, you don't need to worry about complicated Ethernet control - simple Socket programming is all that is required to get started. With its outstanding performance, stability, and ease of use, the W5100 module is an excellent choice for your next project.
This module has the name SW5100, and they have still provided a short guide document.
You can see more details of W5100. It was launched on 2006.12.21.
https://www.wiznet.io/product-item/w5100/
There is also the W5100S. It is very similar to W5100.
You can see more details of W5100S. It was launched on 2018.04.01.
https://www.wiznet.io/product-item/w5100s/
The W5100S is cheaper than W5100, but it is not compatible pin to pin.
You can find the comparison sheet.
https://docs.wiznet.io/img/products/w5100s/w5100s_cp_v100e.pdf
Thank you for reading.