The AT90USBKEY is a demonstration board based on AT90USB1287 & serves for the quick evaluation of AVR microcontroller & AT90USB family. AVR programs can be run after connection via the USB (Universal Serial Bus) port of the PC (demo programs or separate applications). Separate applications can be developed by the access to the JTAG port & all IOs of the microcontroller. In addition, this stand alone board has numerous features such as USB (Universal Serial Bus) port, joystick, data flash memory & a temperature sensor & a power supply connection.