MCP2221 I
2
C DEMONSTRATION
BOARD USER’S GUIDE
2016 Microchip Technology Inc.
DS50002480A-page 5
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................... 9
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 MCP2221 I
2
C Demonstration Board Description ......................................... 11
1.3 What the MCP2221 I
2
C Demonstration Board Kit Includes ......................... 13
Chapter 2. Installation and Operation
2.1 Minimum System Requirements .................................................................. 15
2.2 Board Setup ................................................................................................. 15
2.3 Jumpers and Connectors Description .......................................................... 16
2.4 Test Points Description ................................................................................ 18
Chapter 3. Testing Board Features
3.1 About the MPC2221 I
2
C Demo Board Application ....................................... 19
3.2 General Information Panel Description ........................................................ 20
3.3 Feature Tabs ................................................................................................ 21
Chapter 4. Creating Custom I
2
C Software Applications
4.1 USB to I
2
C .................................................................................................... 39
4.2 PIC16F1509 as I
2
C Master .......................................................................... 40
4.3 I
2
C Slave Addresses .................................................................................... 41
Chapter 5. Troubleshooting
5.1 Board Not Detected by PC ........................................................................... 43
5.2 USB Driver Installation Issues ...................................................................... 43
5.3 PC Application Reports “MCP2221 Not Connected” .................................... 43
5.4 PC Application Reports I
2
C Errors ............................................................... 44
5.5 Issues Programming the PIC
®
Microcontroller ............................................. 44
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