This part is a kind of semiconductor called S3F94C4.

Function of this product has 8-BIT CMOS MICROCONTROLLERS.

Manufacturers : Samsung semiconductor

Image and pinout :

Some of the text within the PDF file :

S3F94C8/S3F94C4 8-BIT CMOS MICROCONTROLLERS USER'S MANUAL Revision 1.1 Important Notice The information in this publication has been carefully checked and is believed to be entirely accurate at the time of publication. Samsung assumes no responsibility, however, for possible errors or omissions, or for any consequences resulting from the use of the information contained herein. Samsung reserves the right to make changes in its products or product specifications with the intent to improve function or design at any time and without notice and is not required to update this documentation to reflect such changes. "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by the customer's tec [ ... ]

S3F94C4 PDF Datasheet Download