This part is a kind of semiconductor called P83C280.

Function of this product has Microcontrollers for monitors with DDC interface/ auto-sync detection and sync proc..

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS DATA SHEET P83Cx80; P87C380 Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc. Product specification File under Integrated Circuits, IC20 1997 Dec 12 Philips Semiconductors Product specification Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc. CONTENTS 1 1.1 1.2 2 3 4 5 5.1 5.2 6 6.1 7 7.1 7.2 7.3 8 8.1 8.2 8.3 8.4 9 10 10.1 10.2 11 11.1 11.2 11.3 11.4 12 13 13.1 13.2 13.3 14 14.1 14.2 14.3 15 15.1 FEATURES Differences from the 80C51 core Memory GENERAL DESCRIPTION ORDERING INFORMATION BLOCK DIAGRAM PINNING INFORMATION Pinning Pin description FUNCTIONAL DESCRIPTION General MEMORY ORGANIZATION Program memory Internal data memory Additional Special Function Registers INTERRUPTS Priority level str [ ... ]

P83C280 PDF Datasheet Download