Atmel STK525 Hardware User Guide

This document describes the STK525 dedicated to the AT90USBxxx AVR microcontroller

Brand: Atmel
Category: Other Electronics
Document type: User Manual
Language: English
Pages: 39
File format: PDF
File size: 869 KB
Published: 12 April, 2012
Updated: 30 September, 2023
MD5 checksum: C81F82A779A91D177CBA1DBDFE1B1C7C
PDF: Atmel STK525 Hardware User Guide PDF

About this manual

The guide introduces the STK525 Starter Kit, a development board for the AT9OUSBxxx AVR microcontroller. It describes the board’s on‑board resources such as USB, RS‑232, joystick, LEDs, temperature sensor, microphone, and serial data‑flash memory, and explains how the kit can be used with the Atmel STK500 board for advanced features.

Power can be supplied from three sources: the USB VBUS bus, an external 9‑15 V DC jack connector, or the STK500 board. The document also covers jumper settings for different voltage configurations, system clock options, and provides complete schematics and troubleshooting guidance.

What's inside

Introduction
STK525 Starter Kit Features
Using the STK525
Power Supply
Troubleshooting Guide
Technical Specifications
Complete Schematics

Specifications

Supported microcontroller	AT9OUSBxxx TQFP (2.7 V – 5.5 V)
Regulated on‑board voltage	3 V or 5 V
External power input range	9 V to 15 V DC
USB interface type	Full/low speed device/host
System clock crystal	8 MHz

Frequently asked questions

Which microcontroller does the STK525 support?

The kit is dedicated to the AT9OUSBxxx AVR microcontroller in a TQFP package.

What software is required to program the STK525?

Use Atmel Flip® or In‑System Programming version 3 or higher for Device Firmware Upgrade (DFU) bootloader.

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