This is one of the semiconductor types. This part name is STK8050.
This product has Block Diagram functions.
Manufacturers of product is ETC.
Image and pinout :
STK8050 PDF Datasheet
Some of the text files within the PDF file
This is the basic block diagram of the inside circuit of IC. In an actual circuit, there may be sometimes idle terminals or some different functions other than the basic circuit. [ … ]
Please refer to the file for details.