This part is a kind of semiconductor called PIC16F84A.

Function of this product has 18-pin Enhanced Flash/EEPROM 8-Bit Microcontroller.

Manufacturers : Microchip Technology

Image and pinout :

Some of the text within the PDF file :

PIC16F84A 18-pin Enhanced FLASH/EEPROM 8-Bit Microcontroller High Performance RISC CPU Features: • Only 35 single word instructions to learn • All instructions single-cycle except for program branches which are two-cycle • Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle • 1024 words of program memory • 68 bytes of Data RAM • 64 bytes of Data EEPROM • 14-bit wide instruction words • 8-bit wide data bytes • 15 Special Function Hardware registers • Eight-level deep hardware stack • Direct, indirect and relative addressing modes • Four interrupt sources: - External RB0/INT pin - TMR0 timer overflow - PORTB<7:4> interrupt-on-change - Data EEPROM write complete Peripheral Features: • 13 I/O pins with individual direction control • High current [ ... ]

PIC16F84A PDF Datasheet Download