This part is a kind of semiconductor called ATMEGA324P.

Function of this product has 8-Bit Microcontroller.

Manufacturers : ATMEL Corporation

Image and pinout :

Some of the text within the PDF file :

8-bit Atmel Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash ATmega164P/V-ATmega324P/V-ATmega644P/V DATASHEET Features  High-performance, Low-power Atmel® AVR® 8-bit Microcontroller  Advanced RISC Architecture ̶ 131 Powerful Instructions – Most Single-clock Cycle Execution ̶ 32 × 8 General Purpose Working Registers ̶ Fully Static Operation ̶ Up to 20 MIPS Throughput at 20 MHz ̶ On-chip 2-cycle Multiplier  High Endurance Non-volatile Memory segments ̶ 16K/32K/64K Bytes of In-System Self-programmable Flash program memory ̶ 512B/1K/2K Bytes EEPROM ̶ 1K/2K/4K Bytes Internal SRAM ̶ Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM ̶ Data retention: 20 years at 85C/100 years at 25C(1) ̶ Optional Boot Code Section with Independent Lock Bits  In- [ ... ]

ATMEGA324P PDF Datasheet Download