---
title: "W7500P Chip does not appear to be working"
url: "https://maker.wiznet.io/forum/15192"
markdown_url: "https://maker.wiznet.io/forum/15192/md"
type: "Forum topic"
category: "MCU & Boards"
author: "Bill.Nagel"
created: "2024-04-10T05:32:54+09:00"
last_activity: "2024-04-16T10:55:07+09:00"
language: "en"
views: 83
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W7500P Chip does not appear to be working

## Question

Asked by Bill.Nagel on 2024-04-10 in MCU & Boards.

We just received our boards which are based on the reference design. When the board is powered up, the chip has power and ground on the correct pins. However, the indicator LEDs do not get pulled low and the UART0 does not respond. The two clock pins are operative, so we assume the chip is properly powered. We found a posting that reports the W7500P is shipped without firmware, is this true?

If so, where can we find the correct firmware to make the chip operate similar to the WIZ750SR Rev1.2 development board? Can you tell me from the information below if the chip is empty?

The chip has the following markings:
W7500P
A502124
2223

## Replies

### Reply 1 by Reheld, 2024-04-16

Hello Bill,

You can find the Firmware below:

![](https://github.githubassets.com/favicons/favicon.svg) [GitHub](https://github.com/Wiznet/WIZ750SR)

![](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/9/9bb49f1ecdc3f9a06a9d061145e3a37abe23aa15.png)

### [GitHub - Wiznet/WIZ750SR: WIZnet Serial to Ethernet(S2E) module based on...](https://github.com/Wiznet/WIZ750SR)

WIZnet Serial to Ethernet(S2E) module based on W7500 chip, WIZ107/108SR S2E compatible device - Wiznet/WIZ750SR

There are different order numbers of W7500P, you can also order it preprogrammed as „ W7500P-S2E“

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Source: https://maker.wiznet.io/forum/15192