Hello, Wiznet has released a new chip this time. Raspberry Pi's RP2040 and Wisnet's W5500 have merged into one chip.

Interesting to hear. I'm adding Ethernet to my RP2040 solution.

https://docs.wiznet.io/Product/ioNIC/W55RP20/overview

The image you see is the official WIZnet website data.As you can see, W5500 and RP2040, 2MB flash are combined into one chip.

I think this chip can be used in two ways.

1. W5500 ExtensionsIt can be used like the traditional Ethernet chip that we used to use. In other words, there is a separate main MCU, and the W55RP20 can be used to enable Ethernet like the W5500. So what's better about the W55RP20 than the W5500 in this situation?It is pre-programming and custom services. Just connecting the W55RP20 with SPI to the MCU like the traditional Ethernet chip will allow us to use a lot of Ethernet applications such as TLS and SSL.

2. RP2040 ExtensionsIt is used as a general purpose MCU, like RP2040. It can be used as an RP2040 with TCP/IP Ethernet. I think it would be a really attractive chip for developers developing Serial to Ethernet.It is also a good choice for use in these applications, as the Edge device development can receive a variety of sensing and transfer data to Ethernet.

The above is Block Diagram of W55RP20. Please refer to it.

Pinout is like this. Package is 68pin QFN type. There is no GND on the outer pin, and there is a Thermal PAD on the inner.

W55RP20-EVB-PICO

On WIZnet's homepage, there is data on the Pico board made of W55RP20.The features seem to be the same as the existing W5500-EVB-PICO.

The pinout is as above.

A few GPIOs are excluded from the board. I heard a few GPIOs were missing when developing the chips, which is a shame. Except for this, it's all like a Pico board.

I received a board as a sample. I was able to receive the sample from the link below.WIZnet - WIZnet Launches the All-in-One W55RP20 Chip

The first thing I noticed is the C-Type connector. It's finally getting out of the micro-B.

And the switch has changed. We have two big, sturdy switches. They look much better than the old W5500-EVB-Pico switches.

USER, ACT, DUP, SPD, LINK LEDs are now available. You will be able to check various Ethernet statuses through the LEDs.

It's very simple to mark the chip. I think it can be changed because it's an engineering sample.

It seems that the Power Dan has also changed. It seems that it has changed from the Linear Regulator that I have been using continuously on WIZnet to DCDC.I looked it up and it looks like a PWM/PFM Mode selectable DCDC style. It seems to be the same way as Raspberry Pi Pico. I think this product will be available with battery power.

The back side is also not equipped with anything.

This seems to be a hole for PoE Module.

To install the module, a header must be installed.But from a spatial point of view, I think it would be better to install the module directly without a header.

If the module is installed in this way, PoE can be used very compactly.

FW development environment

Now it's time to look at the development environment.

Unfortunately, python doesn't seem to have been developed yet. C/C++ seems to have been developed.

If you go into the collar, it looks like this, and it's called WIZnet-PICO-C. I think it's probably merged all of Wiznet's Pico Board.

It is correct that it was merged into one. I think you can define it with W55RP20-EVB-Pico in that FW and use it.

Conclusion

I don't think the features and price are bad. I think it's good that the price is the same as the old Pico board.Personally, I think it will be effective for Serial to Ethernet products.

I wonder what you guys think.Next time, I will proceed with the project with this board or chip and bring it.

Thank you.