This part is a kind of semiconductor called MC4582DA727.Function of this product has 8M x 72-Bit SDRAM Module. Manufacturers : NEC Electronics Image and pinout : Some of the text within the PDF file : w w w .d e e h s a t a . u t4 m o c [ ... ] MC4582DA727 PDF Datasheet Download Metablog 2017/10/24 02:30 2017/10/24 02:30