This part is a kind of semiconductor called ST7529.

Function of this product has 32-Gray Scale Dot Matrix LCD Controller / Driver.

Manufacturers : Sitronix

Image and pinout :

Some of the text within the PDF file :

ST ST7529 32 Gray Scale Dot Matrix LCD Controller/Driver Sitronix 1. INTRODUCTION The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid crystal display systems. It generates 255 Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI), 8-bit/16-bit parallel or IIC display data and stores in an on-chip display data RAM. It performs display data RAM read/write operation with no external operating clock to minimize power consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components. 2. FEATURES Driver Output Circuits −255 segment outputs / 160 common outp [ ... ]

ST7529 PDF Datasheet Download