---
title: "WIZ5500io and microcontroller"
url: "https://maker.wiznet.io/forum/11044"
markdown_url: "https://maker.wiznet.io/forum/11044/md"
type: "Forum topic"
category: "IO Modules"
author: "drVrh"
created: "2015-05-13T15:24:58+09:00"
last_activity: "2017-05-04T08:36:10+09:00"
language: "en"
views: 954
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZ5500io and microcontroller

## Question

Asked by drVrh on 2015-05-13 in IO Modules.

Hello,

I’m newbie in Wiznet module W5500io.

I would like connect W5500io with microcontroller Atmega328. But I don’t know how connect.
Connect just SPI pins and power pins? I don’t know if connect must be too RDY, RSTn and INTn.

And second question, I have no idea, how communicate with module over SPI. I would like use Ethernet library and projects from Arduino on my microncontroller and my breadboard.

Thanks for reply.

---

Source: https://maker.wiznet.io/forum/11044