Wiznet W7500 Owner's manual

© Copyright 2016 WIZnet Co., Ltd. All rights reserved. 1
IOP4IoT W7500
W7500(P)
Revision information
(2016.08.08)
This is a preliminary document release. All specifications are subject to
change without notice.
http://www.wiznet.co.kr

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IOP4IoT W7500
This document contain which is different with old version W7500(P) and new
version (revision) W7500(P).
You can check OLD version and NEW version as LOT number.
OLD version W7500(P) - R1 : LOT number - 15XX
NEW version W7500(P) - R2 : LOT number –after 1607

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IOP4IoT W7500
1W7500(P) R1 (old version)
Old version W7500(P) is unstable when reset assert to W7500(P) from reset pin.
So there is 50 % probability W7500(P) is not awake when reset asserted.
2W7500(P) R2 (new version)
New version W7500(P) has no reset problem.
W7500(P) working clearly whenever reset asserted.
There is no more different with W7500(P) R1 (old version)
3Design guide for old version W7500(P)
1. Please add “watchdog supervisor chip”when reset switch is needed in
user system.
(Please refer to WIZ750SR schematic, especially 3rd page of schematic of
below link)
schematic is for W7500P, you need to check pin connection if you use W7500
http://wizwiki.net/wiki/lib/exe/fetch.php?media=products:wiz750sr:d
atasheet:wiz750sr_schematic_v1.0_pdf.pdf
2. And you need to add below code when develop a software
Main()
{
*(volatile uint32_t *)(0x41001170) = 0x0002; // 8MHz output (125n)
*(volatile uint32_t *)(0x41002008) = 0x0002; // PAD PA_02 use as CLKOUT
….
}

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IOP4IoT W7500
3. In this case, user must remove pin header of J5 must remove when user
enter ISP mode.
So there is problem when user enter ISP mode because user must assert
reset switch when need to ISP mode. (50% probability)
4. There is no way to solve this issue when download firmware from PC.
But there is a 100% firmware download method through WIZwiki-
W7500ECO board.

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IOP4IoT W7500
3.1 How to download firmware through WIZwiki-W7500ECO
(It is an easy way to download firmware especially for old version)
Step 1 : User have to prepare ISP related pin connector on system board.
6 pin needed as below (VCC, GND, BOOT, RESET, TXD2, RXD2)
(Please refer to WIZ750SR schematic too)
Step 2 : Prepare WIZwiki-ECO board, MicroSD card and firmware
A. WIZwiki_W7500ECO board
Download firmware (W7500x_SSP_SD_Card_LED.bin) to WIZwiki-
W7500ECO board.
B. firmware
‘bin file’ for system board and need to rename to ‘firmware.bin’
C. MicroSD card
copy ‘firmware.bin’file to MicroSD card and insert MicroSD card to
WIZwiki-W7500ECO board

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IOP4IoT W7500
Step 3 : Connect 6 pin together (System board and WIZwiki-W7500ECO board)
Step 4 : Press reset button in WIZwiki-W7500ECO board.
Then WIZwiki-W7500ECO board will start to download ‘firmware.bin’ to
system board with control reset and boot pin of system board.
When download is finished, LED1 and LED2 will be on together.