This part is a kind of semiconductor called CF745.

Function of this product has EPROM/ROM-Based 8-Bit CMOS Microcontroller Series.

Manufacturers : Microchip Technology

Image and pinout :

Some of the text within the PDF file :

M • • • • • • • • • • PIC16C52 PIC16C54s PIC16CR54s PIC16C55s PIC16C56s PIC16CR56s PIC16C57s PIC16CR57s PIC16C58s PIC16CR58s Note: PIC16C5X • • • • • 12-bit wide instructions 8-bit wide data path Seven or eight special function hardware registers Two-level deep hardware stack Direct, indirect and relative addressing modes for data and instructions EPROM/ROM-Based 8-Bit CMOS Microcontroller Series Devices Included in this Data Sheet: Peripheral Features: • 8-bit real time clock/counter (TMR0) with 8-bit programmable prescaler • Power-On Reset (POR) • Device Reset Timer (DRT) • Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation • Programmable code-protection • Power saving SLEEP mode • Selectable oscillator options: [ ... ]

CF745 PDF Datasheet Download