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AT90USBKEY2- Demo Board for AVR MCUs and AT90USB family

Manufacturer: Microchip Technology
Part No: AT90USBKEY2
Availability: In Stock

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The AT90USBKEY2 demonstration board allows quick evaluation of AVR microcontrollers and the AT90USB family. The key2 simply connects to the USB port of a computer to retrieve on-board documentation and run AVR programs. Designers can either run demonstration programs or their own application. The board also permits access to the JTAG port and all the IOs of the microcontroller for hardware development.


➧ Run demonstration programs or your own application
➧ Permits access to JTAG port and all the IOs of the MCU for hardware development
➧ An external power supply can be used or USB stand-alone operation

Key Features



Power Supply

– regulated 3.3V
– from an external battery connector

– from the USB interface

JTAG interface

– 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 data flash memories
– all microcontroller I/O ports access on 2x8pin headers


- RESET button

- HWB button to force bootloader section execution at reset

System clock

8 MHz crystal

USB Connector

Mini-AB receptacle

USB Communications

Full speed/low speed

JTAG Connector

Footprint for HE10 connector

All ports connectors

J1, J2, J4, J5, J6, J7

Battery connector

MTA right angle

AT90USBKey Hardware User Guide

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