This document is the AT90USBKey Hardware User Guide, which describes the features and functions of the AT90USBKey development board.
The guide introduces the AT90USBKey development board, its purpose for quick start AVR programming, and lists its on‑board resources such as USB, joystick, data‑flash, temperature sensor, LEDs and reset button. It explains power‑supply options (USB VBUS or external battery), reset mechanisms, and the USB host/device operation using the mini‑AB connector.
Further sections cover detailed schematics, a bill of materials, technical specifications (dimensions, voltage ranges, connector type, communication speed), and a troubleshooting guide. Contact information for Atmel technical support is also provided.
| Physical dimensions | 90 mm × 30 mm × 8 mm |
|---|---|
| Weight | 12 g |
| Internal voltage supply | 3.3 V |
| External voltage supply | 8 V – 15 V |
| USB connector type | Mini AB receptacle |
| USB communication speed | Full speed / low speed |