SEOUL, Oct 29 (Reuters) - SK Hynix Inc (000660.KS), the world"s second-largest memory chip maker, said on Friday it will acquire South Korea-based Key Foundry, a chip contract manufacturer, for 576 billion won ($492.41 million). The 8-inch wafer foundry manufactures chips such as power management, display driver and microcontroller unit semiconductors, SK Hynix said in a statement. SK Hynix had been in talks to acquire Key Foundry, in which it had a minority stake earlier, since the first half of this year, South Korean media previously reported. read more SK Hynix said the acquisition is expected to double its current 8-inch foundry capacity. It already has a chip contract manufacturing unit, SK Hynix System IC. ($1 = 1,169.3500 won)