---
title: "how are W7500P chips delivered?"
url: "https://maker.wiznet.io/forum/12825"
markdown_url: "https://maker.wiznet.io/forum/12825/md"
type: "Forum topic"
category: "MCU & Boards"
author: "phenningny"
created: "2018-03-31T19:24:02+09:00"
last_activity: "2018-04-09T00:56:25+09:00"
language: "en"
views: 1251
replies: 13
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# how are W7500P chips delivered?

## Question

Asked by phenningny on 2018-03-31 in MCU & Boards.

Hi - we just received a newly fabricated board with multiple W7500P. my question is - is there a default program flashed onto the W7500P chips or is the flash totally blank?

I am just trying to figure out the proper steps to bring the chips up.

thanks!

## Replies

### Reply 1 by Edward, 2018-04-02

Hi.

Maybe Are you bought WIZwiki-W7500P? or WIZ750SR?
If you bought WIZwiki-W7500P, It is basically programed TCP loopback program.
And If you bought WIZ750SR, It is basically programed Serial to ethernet converter program.

And If you want program download way, refer to below link.
<https://wizwiki.net/wiki/doku.php?id=products:wizwiki_w7500p:getting_started:write_firmware>

Thank you

### Reply 2 by phenningny, 2018-04-02 (in reply to reply 1)

Thank you. We just purchased the raw W7500P chips. Would they be programmed?

### Reply 3 by Edward, 2018-04-02

Hi.

There are two kind of W7500P to selling.

1. W7500P-S2E
   it is pre-programmed Serial to ethernet firmware. It is already programmed.

2. just raw W7500P
   It is empty.

Thank you.

### Reply 4 by phenningny, 2018-04-02

Thanks!

### Reply 5 by Edward, 2018-04-02

Your welcome ^^

### Reply 6 by phenningny, 2018-04-02 (in reply to reply 5)

Edward, for the raw W7500P chip, is there a protocol for choosing the MAC address of that chip that we should follow?

### Reply 7 by phenningny, 2018-04-02 (in reply to reply 5)

I am assuming it does not ship with a default MAC address?

### Reply 8 by Edward, 2018-04-03

Hi.

Yes.
raw W7500P chip is not including MAC address.
You should buy MAC address from IEEE.
if you want MAC address, you should buy other product. like W7500P-S2E chip, Serial to ethernet, network module etc…

Thank you

### Reply 9 by phenningny, 2018-04-03

Thank you!

### Reply 10 by phenningny, 2018-04-06

Hi - when programming some chips using the W7500 ISP tool we get the error

ERROR LOCK PROG:

is there any way this can be avoided?

Thanks!

### Reply 11 by phenningny, 2018-04-06

when programming some W7500P chips using the W7500 ISP tool we get the error and it does not allow us to flash new firmware.

[![](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/0/087ad70ff2f9ee1fcbcaed216036381c71dd5826.JPG) 3971×2051 2.6 MB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/0/087ad70ff2f9ee1fcbcaed216036381c71dd5826.JPG)

This is the screen we see (attached). What actions can we take to be able to flash?

Thanks!

### Reply 12 by Edward, 2018-04-09

Hi.

First, Did you set to boot pin to active high?
If you set to boot pin to active high, You possible connected to ISP serial access.

And I think, W7500P still have locking.
So, check to sequence to below list. (below list is W7500P make to unlock mode way)

1. Access to ISP tool serial.

2. Check to All Code Read Unlock/Data R/W Unlock of Step 3

3. Check to All Code Write Unlock of Step 4

4. Do not load binary file.

5. ISP start click. (This is unlock setting to W7500P chip)

[![download](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/3/33b3e9365622728d3172202d84df725194197116.png) download733×783 20.1 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/3/33b3e9365622728d3172202d84df725194197116.png)

And exit to ISP program.
And then reexcute ISP program.

If you successfully unlock to W7500P, ISP tool show to same below picture.
If ISP tool show to same below picture, You possible W7500P memory R/W.

[![download1](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/7/77ba6c4dd9ea4a37c12107804476576157e683ce.png) download1734×780 19.8 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/7/77ba6c4dd9ea4a37c12107804476576157e683ce.png)

Thank you.

### Reply 13 by phenningny, 2018-04-09

Thanks very much, this is very helpful.

---

Source: https://maker.wiznet.io/forum/12825