AT90USBKey_doc7627 - AT90USBKey . Hardware User Guide...

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AT90USBKey ............................................................................................ Hardware User Guide
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AT90USBKey Hardware User Guide User Guide 1 7627A–AVR–04/06 Section 1 Introduction . .......................................................................................... 1-3 1.1 Overview . .................................................................................................. 1-3 1.2 AT90USBKey Features. ........................................................................... 1-4 Section 2 Using the AT90USBKey . ...................................................................... 2-5 2.1 Overview . .................................................................................................. 2-5 2.2 Power Supply. ........................................................................................... 2-6 2.3 Reset. ........................................................................................................ 2-8 2.4 On-board Resources. ................................................................................ 2-9 2.5 In-System Programming . ........................................................................ 2-13 2.6 Debugging. .............................................................................................. 2-14 Section 3 Troubleshooting Guide . ...................................................................... 3-15 Section 4 Technical Specifications . .................................................................... 4-16 Section 5 Technical Support. .............................................................................. 5-17 Section 6 Complete Schematics. ........................................................................ 6-18
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AT90USBKey Hardware User Guide 1-3 7627A–AVR–04/06 Section 1 Introduction Congratulations on acquiring the AVR® AT90USBKey. This kit is designed to give designers a quick start to develop code on the AVR® and for prototyping and testing of new designs with the AT90USB microcontroller family. 1.1 Overview This document describes the AT90USBKey dedicated to the AT90USB AVR microcontroller. This board is designed to allow an easy evaluation of the product using demonstration software. To increase its demonstrative capabilities, this stand alone board has numerous on- board resources: USB, joystick, data-flash and temperature sensor. Figure 1-1 . AT90USBKey
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Introduction 1-4 AT90USBKey Hardware User Guide 7627A–AVR–04/06 1.2 AT90USBKey Features The AT90USBKey provides the following features: AT90USB QFN64 AVR Studio® software interface (1) USB software interface for Device Firmware Upgrade (DFU bootloader) (2) Power supply flagged by “VCC-ON” LED: – regulated 3.3V – from an external battery connector (for reduced host or OTG operation) – from the USB interface (USB device bus powered application) JTAG interface (connector not mounted): – for on-chip ISP – for on-chip debugging using JTAG ICE Serial interfaces: – 1 USB full/low speed device/host/OTG interface On-board resources: – 4+1-ways joystick – 2 Bi-Color LEDs – temperature sensor – serial dataflash memories – all microcontroller I/O ports access on 2x8pin headers (not mounted) On-board RESET button On-board HWB button to force bootloader section execution at reset. System clock: – 8 MHz crystal Notes: 1. The AVRUSBKey is supported by AVR Studio®, version 4.12 or higher. For up-to- date information on this and other AVR tool products, please consult our web site. The most recent version of AVR Studio®, AVR tools and this User Guide can be found in the AVR section of the Atmel web site, http://www.atmel.com. 2. ATMEL Flip®, In System Programming Version 3 or Higher shall be used for Device Firmware Upgrade. Please consult Atmel web site to retrieve the latex version of Flip and the DFU bootloader Hex file if needed.
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AT90USBKey Hardware User Guide 2-5 7627A–AVR–04/06 Section 2 Using the AT90USBKey This chapter describes the AVRUSBKey and all its resources. 2.1 Overview Figure 2-1 . AT90USBKey Overview
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Using the AT90USBKey 2-6 AT90USBKey Hardware User Guide 7627A–AVR–04/06 2.2 Power Supply 2.2.1 Power Supply Sources The on-board power supply circuitry allows two power supply configurations: from USB connector from battery connector USB powered
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AT90USBKey_doc7627 - AT90USBKey . Hardware User Guide...

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