This part is a kind of semiconductor called HD44100H.
Function of this product has LCD Driver with 80-Channel Outputs.
Manufacturers : Hitachi Semiconductor
Image and pinout :

Some of the text within the PDF file :
w w a D . w S a t e e h U 4 t m o .c w w w .D t a S a e h t e U 4 .c m o w w w .D at h S a t e e 4U . m o c [ ... ]
HD44100H PDF Datasheet Download
