This part is a kind of semiconductor called ATmega169A.

Function of this product has 8-bit Atmel Microcontroller.

Manufacturers : ATMEL

Image and pinout :

Some of the text within the PDF file :

Features • High Performance, Low Power Atmel® AVR® 8-Bit Microcontroller • Advanced RISC Architecture – 130 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 16MIPS Throughput at16MHz (ATmega169A/169PA/649A/649P) – Up to 20 MIPS Throughput at 20MHz (ATmega329A/329PA/3290A/3290PA/6490A/6490P) – On-Chip 2-cycle Multiplier • High Endurance Non-volatile Memory segments – In-System Self-programmable Flash Program Memory • 16Kbytes (ATmega169A/ATmega169PA) • 32Kbytes (ATmega329A/ATmega329PA/ATmega3290A/ATmega3290PA) • 64Kbytes (ATmega649A/ATmega649P/ATmega6490A/ATmega6490P) – EEPROM • 512bytes (ATmega169A/ATmega169PA) • 1Kbytes (ATmega329A/ATmega329PA/ATmega3290A/ATmega3290PA) [ ... ]

ATmega169A PDF Datasheet Download