This part is a kind of semiconductor called M5219B.

Function of this product has Advanced LCD Controller/Driver Family.

Manufacturers : OKI

Image and pinout :

Some of the text within the PDF file :

s s ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– INTRODUCTION With the continuing demand for smaller and more efficient systems, designers are seeking new ways to reduce power and increase integration. This paper describes how good use of OKI Semiconductor’s monolithic display drivers can reduce power consumption and component count in systems that incorporate liquid crystal displays (LCDs). Information in this paper is applicable both to small LCD panels (with a dozen or less segmented digits) and to large LCD panels (such as used for laptop screens). LCD elements ar [ ... ]

M5219B PDF Datasheet Download