---
title: "A S2E module using W5100 and AVR MCU"
url: "https://maker.wiznet.io/chen/resellers/a-s2e-module-using-w5100-and-avr-mcu/"
markdown_url: "https://maker.wiznet.io/chen/resellers/a-s2e-module-using-w5100-and-avr-mcu/md"
type: "VAR: Value-Added Reseller Products"
author: "patch1982"
author_url: "https://www.eefocus.com/circuit/1024195.html"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "patch1982"
original_url: "https://www.eefocus.com/circuit/1024195.html"
license: "Apache License 2.0 (Apache-2.0)"
published: "2022-12-05"
language: "en"
hardware: ["WIZnet W5100"]
likes: 2
views: 581
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# A S2E module using W5100 and AVR MCU

> This is a S2E module using W5100 and AVR MCU.

Original author: patch1982 (source: https://www.eefocus.com/circuit/1024195.html)

## Components

- **WIZnet W5100** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5100))

## Article

**方案介绍**

mcu采用at公司avr系列mega64，网络芯片采用韩国wiznet内含网络协议的w5100。

mega64使用7.3728mhz晶体作为外部时钟。

其usart0扩展为rs485

usart1扩展为rs232

w5100与mega64之间使用spi接口连接。配置为100m带宽。

电源部分使用mc34063提供系统3.3v电源。

硬件方案框图如下：

![](https://www.cirmall.com/upload/images/Fm_qgLFOKOygW9BwIO6XqYsEnbT0/%E6%97%A0%E6%A0%87%E9%A2%98123456789.jpg)

两个图纸可以正常使用

下图为测试完成电路板

![](https://www.cirmall.com/upload/images/FkNfZ9Nq6Zb5SOnxDzDww-bItr6c/123951jq38qahraa5qnvhg.jpg)

附件内容包括：

原理图用altium打开，pcb用pads2007打开。

## **相关文件（1）**

下载所有附件

Mega64+w5100.rar

下载

描述：原理图用altium打开，pcb用pads2007打开。

---

Source: https://maker.wiznet.io/chen/resellers/a-s2e-module-using-w5100-and-avr-mcu/