STK525 Hardware User Guide User Guide

1

7608A–AVR–04/06

Section 1

Introduction ........................................................................................... 1-3

1.1

Overview ...................................................................................................1-3

1.2

STK525 Starter Kit Features .....................................................................1-4

Section 2

Using the STK525................................................................................. 2-6

2.1

Overview ...................................................................................................2-6

2.2

Power Supply ............................................................................................2-7

2.3

RESET ....................................................................................................2-10

2.4

AT90USBxxx AVR Microcontroller..........................................................2-11

2.5

Serial Links .............................................................................................2-11

2.6

On-board Resources...............................................................................2-14

2.7

STK500 Resources .................................................................................2-19

2.8

In-System Programming .........................................................................2-20

2.10 Test Points ..............................................................................................2-23

2.11 Configuration Pads .................................................................................2-24

2.12 Solder Pads ............................................................................................2-25

Section 3

Troubleshooting Guide ....................................................................... 3-26

Section 4

Technical Specifications ..................................................................... 4-27

Section 5

Technical Support ............................................................................... 5-28

Section 6

Complete Schematics ......................................................................... 6-29