Patent ID: 7260670
Filing Date: 2007-08-21
Classification: G11C

Abstract:
1. A non-volatile semiconductor memory device comprising: a first cell having electrically rewritable and non-volatile memory cells arranged therein, said memory cells of said first cell array being connected to first bit lines; a second cell array having electrically rewritable and non-volatile memory cells arranged therein, said memory cells of said second cell array being connected to second bit lines; a first page buffer disposed in correspondence with said first cell array for reading and writing data by a page of the first cell array via said first bit lines; and a second page buffer disposed in correspondence with said second cell array for reading and writing data by a page of the second cell array via said second bit lines; wherein said non-volatile semiconductor memory device has a page copy mode performed as follows: read out data of a copy source page within said first cell array to said first page buffer; transfer the read out data to said second page buffer via a data bus; and then write the read out data into a copy destination page of said second cell array.