---
title: "W7100A or W7500P?"
url: "https://maker.wiznet.io/forum/11984"
markdown_url: "https://maker.wiznet.io/forum/11984/md"
type: "Forum topic"
category: "MCU & Boards"
author: "perto"
created: "2016-10-20T17:53:54+09:00"
last_activity: "2017-05-04T08:39:14+09:00"
language: "en"
views: 1264
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W7100A or W7500P?

## Question

Asked by perto on 2016-10-20 in MCU & Boards.

Dear support,

We are looking for a Serial TTL to Ethernet ready solution.
Firstly we bought an WIZ107SR module and it worked properly. Then, to minimize costs, we decided to use the IOP W7100A (8051, TCP/IP, MAC & PHY) in our project.
But also, there is the IOP W7500P, which is composed by an Cortex-M0, TCP/IP, MAC & PHY.
It seems this second item meets our need too and it is cheaper. Could you confirm it?
We appreciate your attention.

Best Regards
André W.

## Replies

### Reply 1 by Edward, 2016-10-25

Hi.

I think… you must using W7100A IOP.

Because, W7500P is remain bug.

So, W7100A recommendation for you.

thank you

### Reply 2 by perto, 2016-10-26

Edward,

Thank you.

---

Source: https://maker.wiznet.io/forum/11984