---
title: "Wiz220io base board"
url: "https://maker.wiznet.io/forum/9843"
markdown_url: "https://maker.wiznet.io/forum/9843/md"
type: "Forum topic"
category: "General"
author: "amar"
created: "2014-01-20T16:53:29+09:00"
last_activity: "2017-05-04T08:31:01+09:00"
language: "en"
views: 1346
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Wiz220io base board

## Question

Asked by amar on 2014-01-20 in General.

Hi Wiznet

I’ve read the wiz220io baseboard schematic and also the part list.
How much the value of pull up resistor (R3-R7) on UART part? ![:question:](https://emoji.discourse-cdn.com/twitter/question.png?v=12)

Need your help, thanks ![:slight_smile:](https://emoji.discourse-cdn.com/twitter/slight_smile.png?v=12)

## Replies

### Reply 1 by peter, 2014-01-21

The value of pull up resistors(R3-R7) are NC. This word mean that It is not connected(= do not populate).
There are just reservation for test.

Thanks

### Reply 2 by amar, 2014-01-21

[quote=“peter”]The value of pull up resistors(R3-R7) are NC. This word mean that It is not connected(= do not populate).
There are just reservation for test.

Thanks[/quote]

thanks, peter ![:smiley:](https://emoji.discourse-cdn.com/twitter/smiley.png?v=12)

---

Source: https://maker.wiznet.io/forum/9843