Microchip Technology ATmega4809 Xplained Pro, megaAVR 0 Getting Started

Features

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Getting Started with megaAVR® 0-Series

• Getting Started with megaAVR® 0-series

• Getting Started with ATmega4809 Xplained Pro and Atmel® Studio 7.0

Microcontrollers and Tools

Introduction

Author: Irun Walberg, Microchip Technology Inc.

This application note outlines how to get started with the megaAVR® 0-series

Refer to the data sheet for further information on the differences between the megaAVR® 0-series
devices.

devices.

© 2018 Microchip Technology Inc.

Application Note

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Table of Contents

Features.......................................................................................................................... 1

Introduction......................................................................................................................1

1. Relevant Devices.......................................................................................................3

1.1. megaAVR® 0-Series..................................................................................................................... 3

2. Get the Device Datasheet......................................................................................... 4

3. Get the Tools............................................................................................................. 5

3.1. Get the ATmega4809 Xplained Pro Evaluation Kit.......................................................................5

3.2. Get the STK600 Starter Kit...........................................................................................................7

3.3. Get Source Code from Atmel | START.........................................................................................8

3.4. Get Atmel Studio 7.0.................................................................................................................... 9

3.5. Get IAR Embedded Workbench for AVR......................................................................................9

3.6. Get Device Support...................................................................................................................... 9

4. Atmel Studio Users Getting Started.........................................................................10

4.1. Atmel Studio with ATmega4809 Xplained Pro............................................................................10

4.2. Atmel Studio with STK600..........................................................................................................15

5. What's Next............................................................................................................. 21

6. Revision History.......................................................................................................22

The Microchip Web Site................................................................................................ 23

Customer Change Notification Service..........................................................................23

Customer Support......................................................................................................... 23

Microchip Devices Code Protection Feature................................................................. 23

Legal Notice...................................................................................................................24

Trademarks................................................................................................................... 24

Quality Management System Certified by DNV.............................................................25

Worldwide Sales and Service........................................................................................26

© 2018 Microchip Technology Inc.

Application Note

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1. Relevant Devices

48KB

32KB

16KB

8KB

4KB

28/32 48

Pins

Flash

ATmega3208

ATmega4808

ATmega3209

ATmega4809

This chapter lists the relevant devices for this document.

1.1 megaAVR® 0-Series

The figure below shows the megaAVR® 0-series devices, laying out pin count variants and memory sizes:

• Vertical migration is possible without code modification, as these devices are fully pin and feature
compatible.

• Horizontal migration to the left reduces the pin count and therefore the available features.

Figure 1-1. megaAVR® 0-Series Overview

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Relevant Devices

Devices with different Flash memory size typically also have different SRAM and EEPROM.

© 2018 Microchip Technology Inc.

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2. Get the Device Datasheet

Web pages

• http://www.microchip.com/wwwproducts/en/ATmega3208

• http://www.microchip.com/wwwproducts/en/ATmega3209

• http://www.microchip.com/wwwproducts/en/ATmega4808

• http://www.microchip.com/wwwproducts/en/ATmega4809

Documents/files

• megaAVR 0-series Manual (.pdf)

• ATmega3208/4808 – 28-pin Datasheet (.pdf)

• ATmega3208/4808 – 32-pin Datasheet (.pdf)

• ATmega3209/4809 – 48-pin Datasheet (.pdf)

• megaAVR 0-series Errata (.pdf)

The documentation for the megaAVR® 0-series is split into three document types:

• Manual (includes all device independent descriptions of the device)

• Datasheet1 (includes all device dependent descriptions of the device, number of peripherals, pinout
and electrical characteristics)

• Errata (includes all known erratas for the device)

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Get the Device Datasheet

1

For devices that are future products, the product brief is available instead of the datasheet.

© 2018 Microchip Technology Inc.

Application Note

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3. Get the Tools

DEBUG USB

POWER HEADER

EXTENSION 1 HEADER

EXTENSION 2 HEADER

EXTENSION 3 HEADER

ATmega4809

RESET BUTTON

CURRENT MEASUREMENT

HEADER

SW0 USER BUTTON

USER LED0

mikroBUS™ socket

AVR DEBUG

FOR EXTERNAL

DEBUGGER

ATECC508A

CRYPTO DEVICE

32.768kHz Crystal

TARGET VOLT AGE

SELECT HEADER

Atmel Studio 7.0, which uses GCC compiler, is the preferred IDE to get started with megaAVR® 0-series.

3.1 Get the ATmega4809 Xplained Pro Evaluation Kit

Figure 3-1. ATmega4809 Xplained Pro Kit

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Get the Tools

Web page: http://www.microchip.com/developmenttools/productdetails.aspx?partno=atmega4809-xpro

Get the kit: http://www.microchipdirect.com/ProductSearch.aspx?Keywords=atmega4809-xpro

© 2018 Microchip Technology Inc.

Application Note

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Document/file:

• ATmega4809 Xplained Pro (.pdf)

Key Features

• ATmega4809 Microcontroller

• Selectable Target Voltage

– 3.3V

– 5.0V (USB / external power)

• One Mechanical Reset/User Programmable Button

• One Mechanical User Programmable Button

• One Yellow User Programmable LED

• ATECC508 CryptoAuthentication™ device

• 32.768 kHz Crystal

• Three Xplained Pro Extension Headers

• One mikroBUS™ Socket

• 10-pin, 50-mil AVR Debug Connector with UPDI

• Embedded Debugger

– Auto-ID for board identification in Atmel Studio

– One yellow status LED

– One green board power LED

– Symbolic debug of complex data types including scope information

– Programming and debugging, including power measurements

– Data Gateway Interface: SPI, I2C, four GPIOs

– Virtual COM port (CDC)

• USB Powered

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Get the Tools

The ATmega4809 Xplained Pro user guide covers how to power the kit and the detailed information on
board components, extension interface, and the hardware guide.

© 2018 Microchip Technology Inc.

Application Note

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3.2 Get the STK600 Starter Kit

Figure 3-2. STK600 Starter Kit

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Get the Tools

Table 3-1. STK600 Device Support for megaAVR 0-Series

Device Routing Card Socket Card

ATmega3209 STK600-RC048M-107 STK600-QFN48

ATmega3209 STK600-RC048M-107 STK600-TQFP48

ATmega4809 STK600-RC048M-107 STK600-QFN48

ATmega4809 STK600-RC048M-107 STK600-TQFP48

For device support for other devices, refer to: http://www.microchip.com/STK600_Starter_Kit-

Users_Guide

Web page: http://www.microchip.com/ATSTK600

Get the kit: http://www.microchipdirect.com/ProductSearch.aspx?Keywords=ATSTK600

Document/file:

• STK600 User Guide (.pdf)

Key features

• AVR Studio 4/AVR32 Studio/AVR Studio 5/Atmel Studio Compatible

• USB Interface to PC for Programming and Control

• Powered from USB Bus or from an External 10-15V DC Power Supply

• Adjustable Target VCC (0-5.5V)

• Two Adjustable Reference Voltages with High Accuracy (0-5.0V, 10mV res.)

• Clock Oscillator, Adjustable On-The-Fly from Atmel Studio (0-50MHz, 0.1% res.)

• Serial In-System Programming (ISP) of tinyAVR® and megaAVR® Devices

© 2018 Microchip Technology Inc.

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Get the Tools

• PDI Programming of AVR XMEGA® Devices

• JTAG Programming of megaAVR, AVR XMEGA, and AVR UC3 Devices

• aWire Programming of AVR UC3 Devices

• ISP and JTAG Programming of AVR Devices in External Target Systems

• Flexible Routing and Socket Card System for Easy Mounting of all Supported Devices

• Eight Push Buttons for General Use

• Eight LEDs for General Use

• All AVR I/O Ports are Easily Accessible through Pin Header Connectors

• Expansion Connectors for Plug-In Modules and Prototyping Area

• On-Board 4Mb DataFlash for Non-volatile Data

• USB mini-AB (On-The-Go) Connector for AVR Devices with USB

• PHY and DSUB-9 Connector for RS-232 Interface

• PHY and DSUB-9 Connector for CAN Bus

• PHY and Header for LIN Bus

• Device Board with an ATmega2560 AVR Microcontroller Included

The STK600 User Guide describes how to power the kit, the detailed information on board components,
extension interface, and the hardware guide.

3.3 Get Source Code from Atmel | START

The example code is available through Atmel | START, which is a web-based tool that enables
configuration of application code through a Graphical User Interface (GUI). The code can be downloaded
for both Atmel Studio 7.0 and IAR Embedded Workbench® via the direct example code-link(s) below or
the BROWSE EXAMPLES button on the Atmel | START front page.

Atmel | START web page: http://microchip.com/start

Example Code

Finding example code for devices in the megaAVR 0-series, can be done by searching for the device
name, e.g. ATmega4809, in the Atmel | START example browser.

Press User guide in Atmel | START for details and information about example projects. The User guide
button can be found in the example browser, and by clicking the project name in the dashboard view
within the Atmel | START project configurator.

Atmel Studio

Download the code as an .atzip file for Atmel Studio from the example browser in Atmel | START, by
clicking DOWNLOAD SELECTED EXAMPLE. To download the file from within Atmel | START, click
EXPORT PROJECT followed by DOWNLOAD PACK.

Double-click the downloaded .atzip file and the project will be imported to Atmel Studio 7.0.

IAR Embedded Workbench

For information on how to import the project in IAR Embedded Workbench, open the Atmel | START user
guide, select Using Atmel Start Output in External Tools, and IAR Embedded Workbench. A link to the
Atmel | START user guide can be found by clicking About from the Atmel | START front page or Help And
Support within the project configurator, both located in the upper right corner of the page.

© 2018 Microchip Technology Inc.

Application Note

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3.4 Get Atmel Studio 7.0

Web page: http://www.microchip.com/development-tools/atmel-studio-7

Document/file:

• Atmel Studio 7.0 (build 1645) Installer (.exe)

Atmel Studio 7.0 or later is the preferred IDE for developing and debugging firmware for the megaAVR
0-series.

For device support, refer to Get Device Support.

3.5 Get IAR Embedded Workbench for AVR

Web page: https://www.iar.com/iar-embedded-workbench/#!?architecture=AVR

Document/file: IAR Embedded Workbench® installer for AVR.

3.6 Get Device Support

Atmel Studio: Support for new devices in Atmel Studio can be added by using the Device Pack

Manager, which is found under Tools->Device Pack Manager.

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Get the Tools

®

For megaAVR® 0-series, update to the latest version by performing the following steps:

1. Click Check for Updates

2. For megaAVR® 0-series, select the latest available version of ATmega_DFP

3. Click Install

For offline installers, go to http://packs.download.atmel.com/. To install a pack, double click on the
installer file and follow the instructions. Any open Atmel Studio windows will have to be closed for the
installation to take effect.

IAR: Support for new devices in IAR Embedded Workbench can be added by installing the latest service
pack. The service pack is available from My Pages on https://iar.com.

© 2018 Microchip Technology Inc.

Application Note

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4. Atmel Studio Users Getting Started

4.1 Atmel Studio with ATmega4809 Xplained Pro

Prerequisites

• Atmel Studio 7.0 1645 or above installed

• The ATmega4809 Xplained Pro board connected to Atmel Studio 7.0 via the on-board USB
connector, which is connected to the embedded debugger. The kit will be powered by the USB, and
the embedded debugger will enable debugging and programming via the USB.

Workflow

1. Launch Atmel Studio 7.0.

2. The page shown in the figure below will appear when ATmega4809 Xplained Pro is connected to
Atmel Studio 7.0.

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Atmel Studio Users Getting Started

© 2018 Microchip Technology Inc.

Application Note

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Atmel Studio Users Getting Started

Figure 4-1. ATmega4809 Xplained Pro Page in Atmel Studio

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3. Start creating a new project by clicking New → Project... or by using the shortcut Ctrl+Shift+N, as
shown in the figure below.

© 2018 Microchip Technology Inc.

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Figure 4-2. Create New Project in Atmel Studio

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Atmel Studio Users Getting Started

4. Select the GCC C Executable Project template from the new project wizard shown in the figure
below, type in the name of the solution and project (e.g. GETTING_STARTED and LED_TOGGLE),
and click OK.

Figure 4-3. New Project Wizard

5. Select ATmega4809 from the device selection wizard as shown in the figure below, and click OK.

© 2018 Microchip Technology Inc.

Application Note

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Figure 4-4. Device Selection Wizard

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Atmel Studio Users Getting Started

A new project with a main.c file associated with it, will be generated in Atmel Studio.

6. Replace the main loop in the main.c file with the following code snippet:

int main (void)
{
/* Configure SW0 as input */
PORTB.DIRCLR = PIN2_bm;

/* Configure LED0 pin as output */
PORTB.DIRSET = PIN5_bm;

while (1)
{
/* Check the status of SW0 */
/* 0: Pressed */
if (!(PORTB.IN & (PIN2_bm)))
{
/* LED0 on */
PORTB.OUTSET = PIN5_bm;
}
/* 1: Released */
else
{
/* LED0 off */
PORTB.OUTCLR = PIN5_bm;
}
}
}

In the code editor, the code should appear as shown in the figure below.

© 2018 Microchip Technology Inc.

Application Note

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Figure 4-5. Code Editor Window

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Atmel Studio Users Getting Started

7. Open project properties by clicking Project → Properties or by using the shortcut ALT+F7.

8. In the Tool view (see the figure below) set Selected debugger/programmer to mEDBG and Interface
to UPDI.

© 2018 Microchip Technology Inc.

Application Note

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Figure 4-6. Debugger and Interface for ATmega4809

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Atmel Studio Users Getting Started

9. Build the project by clicking Build → Build Solution or by using the shortcut F7.

10. Program ATmega4809 with the project code and start debugging by clicking Debug → Start
debugging and break or by using the shortcut ALT+F5. The application is programmed onto the
device and program execution should break in main.

11. Run the code by clicking Debug → Continue or by using the shortcut F5).

12. Verify that LED0 is lit when SW0 is pushed on the ATmega4809 Xplained Pro.

4.2 Atmel Studio with STK600

Prerequisites

• Atmel Studio 7.0 1645 or above installed

• The STK600 board connected to Atmel Studio 7.0 via the on-board USB connector.

Workflow

1. Launch Atmel Studio 7.0.

2. Start creating a new project by clicking New → Project... or by using the shortcut Ctrl+Shift+N, as
shown in the figure below.

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 15

Figure 4-7. Create New Project in Atmel Studio

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Atmel Studio Users Getting Started

3. Select the GCC C Executable Project template from the new project wizard shown in the figure
below, type in the name of the solution and project (e.g. GETTING_STARTED and LED_TOGGLE),
and click OK.

Figure 4-8. New Project Wizard

4. Select ATmega4809 from the device selection wizard as shown in the figure below, and click OK.

© 2018 Microchip Technology Inc.

Application Note

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Figure 4-9. Device Selection Wizard

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Atmel Studio Users Getting Started

A new project with a main.c file associated with it will be generated in Atmel Studio.

5. Replace the main function in the main.c file with the following code snippet:

int main (void)
{
/* STK600 have eight User Buttons and eight User LEDs which can be connected to any IO
pin using cables */
/* Configure PB0 as input (remember to connect SW0 to PB0 using a cable */
PORTB.DIRCLR = PIN0_bm;

/* Configure PB1 as output (remember to connect LED0 to PB1 using a cable*/
PORTB.DIRSET = PIN1_bm;

while (1)
{
/* Check the status of SW0 */
/* 0: Pressed */
if (!(PORTB.IN & (PIN0_bm)))
{
/* LED0 on */
PORTB.OUTCLR = PIN1_bm;
}
/* 1: Released */
else
{
/* LED0 off */
PORTB.OUTSET = PIN1_bm;
}
}
}

In the code editor, the code should appear as shown in the figure below.

© 2018 Microchip Technology Inc.

Application Note

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Figure 4-10. Code Editor Window

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Atmel Studio Users Getting Started

6. Open project properties by clicking Project → Properties or by using the shortcut ALT+F7.

7. In the Tool view (see the figure below) set Selected debugger/programmer to STK600 and Interface
to UPDI.

© 2018 Microchip Technology Inc.

Application Note

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Atmel Studio Users Getting Started

Figure 4-11. Debugger and Interface for ATmega4809

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8. Build the project by clicking Build → Build Solution or using the shortcut F7.

9. Connect the embedded debugger on STK600 to ATmega4809 by connecting a cable between the
ISP/PDI headers, as shown in the figure below.

Figure 4-12. UPDIConnection on STK600

10. Connect PB2 to SW0, and PB5 to LED0 by using cables.

© 2018 Microchip Technology Inc.

Application Note

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Atmel Studio Users Getting Started

11. Load the code onto the STK600 and start debugging by clicking Debug → Start debugging and
break or by using the shortcut ALT+F5. The application is programmed onto the device and the

program execution should break in main.

12. Run the code by clicking Debug → Continue or by using the shortcut F5.

13. Verify that LED0 is lit when SW0 is pushed on STK600.

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 20

5. What's Next

For further information on related AVR products and IDE, refer to the links below:

Software:

• Atmel Studio: http://www.microchip.com/avr-support/atmel-studio-7

• Atmel Studio help: "Help → View Help" (shortcut "CTRL+F1")

• Atmel Gallery: https://gallery.microchip.com/

Firmware:

• Atmel START documentation: http://start.atmel.com/static/help/index.html

• Atmel START examples: http://microchip.com/start/#examples

Hardware:

• AVR042: AVR Hardware Design Considerations: http://www.microchip.com/

AVR042:AVR_Hardware_Design_Considerations

• AVR IBIS files: http://www.microchip.com/doclisting/TechDoc.aspx?type=IBIS

• AVR BDSL files: http://www.microchip.com/doclisting/TechDoc.aspx?type=BSDL

Recommended programming/debugging tools:

• Atmel-ICE:

– Documentation: http://www.microchip.com/Atmel-ICE_Debugger_User_Guide

– Buy: http://www.microchip.com/developmenttools/productdetails.aspx?partno=atatmel-ice

• Power debugger:

– Documentation: http://www.microchip.com/42696D_Power_Debugger_User_Guide

– Buy: http://www.microchip.com/developmenttools/productdetails.aspx?

partno=atpowerdebugger

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What's Next

Other:

• AVR Freaks®: http://www.avrfreaks.net/

• Application notes: http://www.microchip.com/paramChartSearch/chart.aspx?branchID=30047, find
the preferred device and go to the product page. All relevant application notes can be found under
the documentation tab.

• AVR product selector: http://www.microchip.com/paramChartSearch/chart.aspx?branchID=30047

• More technical documentation concerning various products: http://www.microchip.com/webdoc/

• Microchip Technical Support: http://www.microchip.com/support/hottopics.aspx

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 21

6. Revision History

Doc. Rev. Date Comments

A 02/2018 Initial document release

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Revision History

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 22

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The Microchip Web Site

Microchip provides online support via our web site at http://www.microchip.com/. This web site is used as
a means to make files and information easily available to customers. Accessible by using your favorite
Internet browser, the web site contains the following information:

• Product Support – Data sheets and errata, application notes and sample programs, design
resources, user’s guides and hardware support documents, latest software releases and archived
software

• General Technical Support – Frequently Asked Questions (FAQ), technical support requests,
online discussion groups, Microchip consultant program member listing

• Business of Microchip – Product selector and ordering guides, latest Microchip press releases,
listing of seminars and events, listings of Microchip sales offices, distributors and factory
representatives

Customer Change Notification Service

Microchip’s customer notification service helps keep customers current on Microchip products.
Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata
related to a specified product family or development tool of interest.

To register, access the Microchip web site at http://www.microchip.com/. Under “Support”, click on
“Customer Change Notification” and follow the registration instructions.

Customer Support

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or Field Application Engineer (FAE) for support.
Local sales offices are also available to help customers. A listing of sales offices and locations is included
in the back of this document.

Technical support is available through the web site at: http://www.microchip.com/support

Microchip Devices Code Protection Feature

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the
market today, when used in the intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of
these methods, to our knowledge, require using the Microchip products in a manner outside the
operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is
engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 23

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• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their
code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the
code protection features of our products. Attempts to break Microchip’s code protection feature may be a
violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software
or other copyrighted work, you may have a right to sue for relief under that Act.

Legal Notice

Information contained in this publication regarding device applications and the like is provided only for
your convenience and may be superseded by updates. It is your responsibility to ensure that your
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The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BeaconThings,
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GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of
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All other trademarks mentioned herein are property of their respective companies.

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 24

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©

2018, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

ISBN: 978-1-5224-2693-6

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Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer
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systems is ISO 9001:2000 certified.

®

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 25

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China - Chengdu

Tel: [phone]

China - Chongqing

Tel: [phone]

China - Dongguan

Tel: [phone]

China - Guangzhou

Tel: [phone]

China - Hangzhou

Tel: [phone]

China - Hong Kong SAR

Tel: [phone]

China - Nanjing

Tel: [phone]

China - Qingdao

Tel: [phone]

China - Shanghai

Tel: [phone]

China - Shenyang

Tel: [phone]

China - Shenzhen

Tel: [phone]

China - Suzhou

Tel: [phone]

China - Wuhan

Tel: [phone]

China - Xian

Tel: [phone]

China - Xiamen

Tel: [phone]

China - Zhuhai

Tel: [phone]

India - Bangalore

Tel: [phone]

India - New Delhi

Tel: [phone]

India - Pune

Tel: [phone]

Japan - Osaka

Tel: [phone]

Japan - Tokyo

Tel: [phone]

Korea - Daegu

Tel: [phone]

Korea - Seoul

Tel: [phone]

Malaysia - Kuala Lumpur

Tel: [phone]

Malaysia - Penang

Tel: [phone]

Philippines - Manila

Tel: [phone]

Singapore

Tel: [phone]

Taiwan - Hsin Chu

Tel: [phone]

Taiwan - Kaohsiung

Tel: [phone]

Taiwan - Taipei

Tel: [phone]

Thailand - Bangkok

Tel: [phone]

Vietnam - Ho Chi Minh

Tel: [phone]

Austria - Wels

Tel: [phone]

Fax: [phone]

Denmark - Copenhagen

Tel: [phone]

Fax: [phone]

Finland - Espoo

Tel: [phone]

France - Paris

Tel: [phone]

Fax: [phone]

Germany - Garching

Tel: [phone]

Germany - Haan

Tel: [phone]

Germany - Heilbronn

Tel: [phone]

Germany - Karlsruhe

Tel: [phone]

Germany - Munich

Tel: [phone]

Fax: [phone]

Germany - Rosenheim

Tel: [phone]

Israel - Ra’anana

Tel: [phone]

Italy - Milan

Tel: [phone]

Fax: [phone]

Italy - Padova

Tel: [phone]

Netherlands - Drunen

Tel: [phone]

Fax: [phone]

Norway - Trondheim

Tel: [phone]

Poland - Warsaw

Tel: [phone]

Romania - Bucharest

Tel: [phone]

Spain - Madrid

Tel: [phone]

Fax: [phone]

Sweden - Gothenberg

Tel: [phone]

Sweden - Stockholm

Tel: [phone]

UK - Wokingham

Tel: [phone]

Fax: [phone]

© 2018 Microchip Technology Inc.

Application Note

DS00002653A-page 26