Atmel MegaAVR Manual de usuario

Table of Contents

Section 1

Introduction...........................................................................................1-1

1.1 Device Support .........................................................................................1-1

Section 2

Getting Started......................................................................................2-1

2.1 Unpacking the System..............................................................................2-1

2.2 System Requirements...............................................................................2-1

Section 3

Connecting the System.........................................................................3-1

Section 4

Hardware Description...........................................................................4-1

4.1 Jumpers, Links and their Functions ..........................................................4-2

4.2 External Connections................................................................................4-2

Section 5

Installing the Software ..........................................................................5-1

5.1 Windows 95 ..............................................................................................5-1

5.2 Windows 3.1 .............................................................................................5-1

Section 6

How to Use the Software......................................................................6-1

6.1 Projects.....................................................................................................6-1

6.2 Files ..........................................................................................................6-1

Section 7

Programming Using the Board .............................................................7-1

7.1 Device Orientation ....................................................................................7-1

7.2 Voltage Selection......................................................................................7-1

7.3 Power and Lead Connections...................................................................7-2

Section 8

Brown-Out Detector..............................................................................8-1

Section 9

Board Applications................................................................................9-1

9.1 Using Switches and LEDs.........................................................................9-1

9.2 Using External Connections......................................................................9-1

Table of Contents

9.2.1 Misc. Header ......................................................................................9-2

9.3 Using Analog Functions............................................................................9-2

9.3.1 Analog Port: Marked on Board...........................................................9-2

9.3.2 Using Internal Reference....................................................................9-2

9.3.3 Using External Reference...................................................................9-3

9.4 Using External RAM..................................................................................9-3

9.4.1 RAM Recommendations.....................................................................9-3

9.4.2 RAM Socket Pin Layout......................................................................9-3

9.4.3 Address Latch.....................................................................................9-3

9.5 Using LCD Connections............................................................................9-3

9.6 Using RS232.............................................................................................9-4

9.7 Programming In-System ...........................................................................9-4

9.8 ISP Header Layout....................................................................................9-5

9.9 Interface Using Resistors..........................................................................9-5

9.10 Using an Analogue Multiplexer IC.............................................................9-5

9.10.1 Using Real Time Clock.......................................................................9-6

megaAVR™ Starter Kit Manual 1-1

Section 1

Introduction

Welcome to the megaAVR™Starter Kit.

This system incorporates an applications board and in-system programming hardware

key for programming AVR®devices in your application. Be sure to check the

README.TXT file included with the software for installation information.

1.1 Device Support The system software currently has support for the following devices.

■ATmega603

■ATmega603L

■ATmega103

■ATmega103L

Software upgrades for new devices will be available in the AVR section of the Atmel

website, which is located at http://www.atmel.com.

Introduction

1-2 megaAVR™ Starter Kit Manual

megaAVR™ Starter Kit Manual 2-1

Section 2

Getting Started

2.1 Unpacking the

System Contents of box:

■Evaluation Board

■Disk set consisting of AVR ISP software and STK300 Application Builder

■In-System Programming (ISP) Dongle

■ISP Ribbon Cable

2.2 System

Requirements The minimum hardware and software requirements are:

■80386 Processor or Above

■1MB Ram

■1MB Free Hard Disk Space

■Windows 3.1 or Windows 95

Getting Started

2-2 megaAVR™ Starter Kit Manual

megaAVR™ Starter Kit Manual 3-1

Section 3

Connecting the System

A Power Supply is required with a standard 2.1mm barrel connector. It can be AC 7 -

12V or DC 9 - 15V. The connector is inserted into the power connection socket as

shown, above.

The programming lead supplied is fitted into the Dongle case and the other end is

inserted into the programming interface on the board as shown.

The Dongle case is connected to one of the printer ports on the PC. If this is not LPT1,

then you will need to change the printer port setting in the software—see software sec-

tion for details.

PLUG HEADER ON LEAD

INTO PROGRAMMING

INTERFACE - KEY WAY

GIVES ORIENTATION

CONNECT LEAD

SUPPLIED TO DONGLE

AND INSERT IN

PC PRINTER PORT

POWER SUPPLY

9 - 15V DC

7 - 12V AC

ON-OFF SWITCH

RS 232 CONNECTOR

NOT USED FOR

PROGRAMMING

POWER CONNECTOR

5.5/2.1 BARREL

Connecting the System

3-2 megaAVR™ Starter Kit Manual

megaAVR™ Starter Kit Manual 4-1

Section 4

Hardware Description

The main features of the board are shown in the diagram below.

Note:

There are a number of jumpers on the board which are used to select different

operations and voltages. The default jumper settings are for programming oper-

ations at 5V JP1 Closed, with brown-out also set to 5V JP2 Open.

To carry out other operations, some jumpers may have to be removed—refer to

the relevant section for details. A full list of the jumpers and links are given in the

following table.

LCD CONNECTOR

ANALOG REFERENCE

VOLTAGE ADJUSTMENT

PLUG IN MEGA

BOARD HERE

ANALOG I/P

PORT A DIGITAL

4 MHz CRYSTAL

PORT B HEADER

PORT C HEADER

PORT D JUMPERS

DISABLE SWITCHES

PORT D HEADER

MISC. HEADER

FOR NON-PORT PINS

JP2 - JUMPER

FOR BROWN-OUT

AT 2.9V OR 4.5V

8 LEDS ON

PORT B

8 SWITCHES

ON PORT D

JP1 JUMPER FOR

3.3 OR 5V VCC SELECT

ON-OFF

SWITCH

POWER INPUT

9-15V DC

OR 7-12 AC

RS232

PORT B JUMPERS

DISABLE LEDS

POWER ON AND

PROG LIGHTS

SELECTOR

FOR RS232

ISP INTERFACE

ADDRESS LATCH

IC FOR RAM

EXTERNAL

SRAM SOCKET

EXTERNAL

MEMORY EXPANSION

LCD CONTRAST

ADJUSTMENT

LK1 - CUT FOR A/D

EXTERNAL REFERENCE

O/P PINS FOR -VE

SUPPLY TO

OPAMP ETC.

PORT E HEADER

Hardware Description

4-2 megaAVR™ Starter Kit Manual

4.1 Jumpers, Links

and their

Functions

4.2 External

Connections All Ports are brought out to edge of board on to headers. Each header has a VCC and

Ground pin for power supply to external circuits. Port F is the Analog input port and is on

the header marked “Analog”. There is an extra six-pin header for miscellaneous func-

tions—Read, Write, ALE, Reset, Ground and VCC.

See sections “Using External Connections” on page 9-1 and “Using Analog Functions”

on page 9-2 for details.

Jumper Function Open Closed Default

JP1 Voltage select 5V 3.3V Open

JP2 Brown-out select 2.9V 4.5V Closed

PE0 RS232 RXD Port E.0 RXD Port E.0

PE1 RS232 TXD Port E.1 TXD Port E.1

Port B LEDs LEDs Disabled LEDs Enabled Closed

Port D Switches Switches Disabled Switches Enabled Closed

LK1 Analog

Reference If LK1 cut, then

EXTERNAL REF

from header

ONBOARD POT Closed

CUT Under

Board LCD Contrast If Cut, add

extra resistor Contrast Pot Closed

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