Japans Renesas Electronics Corp has talked with several companies, including Apple Inc, on a possible sale of its display chip design unit, a source familiar with the situation said on Wednesday. Renesas has been restructuring to focus on its business supplying semiconductors to the automotive sector and said on Wednesday it was considering a sale of Renesas SP Drivers, but declined to comment further. The Nikkei business daily said Apple was in talks to buy the unit and could pay 50 billion yen ($483 million), with a transaction due to be completed by summer. Apple did not respond to an email request for comment.