This part is a kind of semiconductor called AT90USB647.

Function of this product has 8-bit Microcontroller.

Manufacturers : ATMEL Corporation

Image and pinout :

Some of the text within the PDF file :

Features • High performance, low power AVR® 8-bit Microcontroller • Advanced RISC architecture – 135 powerful instructions – most single clock cycle execution – 32 × 8 general purpose working registers – Fully static operation – Up to 16MIPS throughput at 16MHz – On-chip 2-cycle multiplier • Non-volatile program and data memories – 64/128Kbytes of in-system self-programmable flash • Endurance: 100,000 write/erase cycles – Optional Boot Code section with independent lock bits • USB boot loader programmed by default in the factory • In-system programming by on-chip boot program hardware activated after reset • True read-while-write operation • All supplied parts are pre-programed with a default USB bootloader – 2K/4K (64K/128K flash version) bytes EEPROM [ ... ]

AT90USB647 PDF Datasheet Download