This part is a kind of semiconductor called ST7735.

Function of this product has 262K Color Single-Chip TFT Controller/Driver.

Manufacturers : Sitronix Technology

Image and pinout :

Some of the text within the PDF file :

ST Sitronix 1 Introduction 2 Features Built-in Circuits -DC/DC converter -Adjustable VCOM generation Single chip TFT-LCD Controller/Driver with RAM On-chip Display Data RAM (i.e. Frame Memory) -132 (H) x RGB x 162 (V) bits LCD Driver Output Circuits: -Source Outputs: 132 RGB channels -Gate Outputs: 162 channels -Common electrode output Display Resolution -132 (RGB) x 162 (GM[2:0]= ”000”, DDRAM: 132 x 18-bits x 162) -128 (RGB) x 160 (GM[2:0]= ”011”, DDRAM: 128 x 18-bits x 160) Display Colors (Color Mode) -Full Color: 262K, RGB=(666) max., Idle Mode OFF -Color Reduce: 8-color, RGB=(111), Idle Mode ON Programmable Pixel Color Format (Color Depth) for Various Display Data input Format -12-bit/pixel: RGB=(444) using the 384k-bit frame memory and LUT -16-bit/pixel: RGB=(565) using the 3 [ ... ]

ST7735 PDF Datasheet Download