Microchip Technology ATmega4809 Xplained Pro Manuale utente

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Getting Started with megaAVR® 0-Series

Features

• Getting Started with megaAVR® 0-series Microcontrollers and Tools

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

Introduction

Author: Irun Walberg, Microchip Technology Inc.

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

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

devices.

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

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1. Relevant Devices

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

48KB

32KB

16KB

8KB

4KB

28/32 48

Pins

Flash

ATmega3208

ATmega4808

ATmega3209

ATmega4809

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

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Relevant Devices

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)

1For devices that are future products, the product brief is available instead of the datasheet.

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Get the Device Datasheet

3. Get the Tools

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

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 VOLTAGE

SELECT HEADER

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

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

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Get the Tools

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

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.

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Get the Tools

3.2 Get the STK600 Starter Kit

Figure 3-2. STK600 Starter Kit

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

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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.

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Get the Tools

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.

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.

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Get the Tools

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

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