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Table of Contents

TABLE OF CONTENTS....................................................................1

STK505 USER GUIDE ......................................................................................... 2

Introduction..............................................................................................2

Features.........................................................................................................................2

Getting Started..................................................................................3

Hardware Overview .........................................................................................3

ZIF socket...................................................................................................................................3

DIP socket ..................................................................................................................................3

Low voltage programming connectors ................................................................3

High voltage programming connectors ...............................................................3

Port configuration switches ..........................................................................................3

Crystal sockets .......................................................................................................................3

Mounting the STK505....................................................................................4

Clock Sources and Reset ..............................................5

The Clock Switch ................................................................................................5

The Reset/PORTB Switch ............................................................................................. 5

Programming the AVR ........................................................6

Introduction.................................................................................................................6

In-System programming.............................................................................6

High Voltage Programming ....................................................................7

High Voltage Programming the ATtiny24 .........................................................7

High Voltage Programming the ATtiny26..................................................................................8

Troubleshooting Guide .....................................................10

Programming problems.............................................................................10

General problems ........................................................................................................ 11