This part is a kind of semiconductor called ATMEGA2560V.

Function of this product has 8-bit Atmel Microcontroller.

Manufacturers : ATMEL

Image and pinout :

Some of the text within the PDF file :

Atmel ATmega640/V-1280/V-1281/V-2560/V-2561/V 8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash Features • High Performance, Low Power Atmel® 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 16 MIPS Throughput at 16MHz – On-Chip 2-cycle Multiplier • High Endurance Non-volatile Memory Segments – 64K/128K/256KBytes of In-System Self-Programmable Flash – 4Kbytes EEPROM – 8Kbytes Internal SRAM – Write/Erase Cycles:10,000 Flash/100,000 EEPROM – Data retention: 20 years at 85C/ 100 years at 25C – Optional Boot Code Section with Independent Lock Bits • In-System Programming by On-chip Boo [ ... ]

ATMEGA2560V PDF Datasheet Download