This part is a kind of semiconductor called 16C84.

Function of this product has PIC16C84.

Manufacturers : Microchip Technology

Image and pinout :

Some of the text within the PDF file :

M PIC16C84 Pin Diagram PDIP, SOIC 8-bit CMOS EEPROM Microcontroller High Performance RISC CPU Features: • Only 35 single word instructions to learn • All instructions single cycle (400 ns @ 10 MHz) except for program branches which are two-cycle • Operating speed: DC - 10 MHz clock input DC - 400 ns instruction cycle • 14-bit wide instructions • 8-bit wide data path • 1K x 14 EEPROM program memory • 36 x 8 general purpose registers (SRAM) • 64 x 8 on-chip EEPROM data memory • 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 • 1,000,000 da [ ... ]

16C84 PDF Datasheet Download