---
title: "WIZ107SR/WIZ108SR Rev 1.4 external watchdog reset - HINT"
url: "https://maker.wiznet.io/forum/10837"
markdown_url: "https://maker.wiznet.io/forum/10837/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "eNDi"
created: "2015-02-11T19:20:32+09:00"
last_activity: "2017-05-04T08:34:52+09:00"
language: "en"
views: 482
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# WIZ107SR/WIZ108SR Rev 1.4 external watchdog reset - HINT

## Question

Asked by eNDi on 2015-02-11 in Serial-to-Ethernet & ConfigTool.

Just for those who face the problem that WIZ107SR/WIZ108SR resets periodically every 2 seconds with custom application code:
with board revision 1.4 an external watchdog was added: TPS3823-33 must be fed by a level transition on Port 2.0

## Replies

### Reply 1 by irina, 2015-02-16

Thanks for your advice.

Regards,
Eric.

---

Source: https://maker.wiznet.io/forum/10837