Table of Contents

Preface............................................................................................................................ 1

1. Introduction................................................................................................................4

1.1.

Features....................................................................................................................................... 4

1.2.

Kit Overview................................................................................................................................. 4

2. Getting Started.......................................................................................................... 5

2.1.

Curiosity Nano Quick Start........................................................................................................... 5

2.2.

Design Documentation and Relevant Links................................................................................. 5

3. Curiosity Nano........................................................................................................... 6

3.1.

Onboard Debugger.......................................................................................................................6

3.1.1.

Virtual COM Port............................................................................................................6

3.1.2.

Mass Storage Disk.........................................................................................................8

3.2.

Curiosity Nano Standard Pinout................................................................................................... 9

3.3.

Power Supply............................................................................................................................. 10

3.3.1.

Target Regulator.......................................................................................................... 10

3.3.2.

External Supply............................................................................................................11

3.4.

Disconnecting the Onboard Debugger....................................................................................... 11

3.5.

Current Measurement................................................................................................................ 13

4. Hardware User Guide..............................................................................................14

4.1.

Connectors................................................................................................................................. 14

4.1.1.

ATmega4809 Curiosity Nano Pinout............................................................................14

4.2.

Peripherals................................................................................................................................. 15

4.2.1.

LED..............................................................................................................................15

4.2.2.

Mechanical Switch....................................................................................................... 15

4.2.3.

Crystal..........................................................................................................................15

4.3.

Onboard Debugger Implementation........................................................................................... 16

4.3.1.

Onboard Debugger Connections................................................................................. 16

5. Hardware Revision History...................................................................................... 17

5.1.

Identifying Product ID and Revision........................................................................................... 17

5.2.

Revision 5...................................................................................................................................17

6. Document Revision History..................................................................................... 18

7. Appendix..................................................................................................................19

7.1.

Schematic...................................................................................................................................19

7.2.

Connecting External Debuggers................................................................................................ 21

7.3.

Getting Started with IAR.............................................................................................................22

The Microchip Web Site................................................................................................ 25

Customer Change Notification Service..........................................................................25

ATmega4809 Curiosity Nano

User Guide

DS50002804A-page 2