Let’s be honest. Adding Ethernet to a simple Serial (UART) device can be a huge headache. You have to write complex network code, connect an MCU to an Ethernet chip, and figure out how to buy and flash a unique MAC address.
What if you could skip ALL of that?Meet the W55RP20-S2E by WIZnet. It’s not just a chip; it’s a cheat code for your hardware design. Just put it on your board, and you are ready to go!
Why is it so ridiculously easy?- No Coding Required: The Serial-to-Ethernet (S2E) firmware is already baked into the chip. Zero programming needed.
- Free MAC Address Inside: Every single chip comes with a pre-programmed, unique MAC address. No need to buy them or flash them yourself!
Seriously, making this work is as easy as building a LEGO set. You only need to connect a few basic things:
- Power: 3.3V
- Clock: A single 25MHz crystal
- Network: An RJ45 connector (MagJack)
- Data: Your device's UART pins (TX/RX)
Boom. That’s it. Your serial device is now on the internet! You can easily configure the baud rate and IP settings later using a simple configuration tool.
Perfect for:Upgrading old factory machines to the IoT world.
- Adding internet to your Arduino or custom sensor boards without touching network code.
- Anyone who wants to save weeks of development time!
Stop wasting time writing network code and routing complicated circuits. Make your life easier and get your project online today!
🛒 Get your W55RP20-S2E here: Wiznet eShop
📖 Check out how simple the wiring is: Hardware Design Guide




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