A 113mm2 32Gb 3b/cell NAND flash memory

NAND flash memories are used in digital still cameras, cellular phones, MP3 players and various memory cards. As seen in the growing needs for applications such as solid-state drives and video camcoders, the market demands for larger-capacity storage has continuously increased and NAND Flash memories are enabling a wide range of new applications. In such situations, to achieve larger capacity at low cost per bit, technical improvement in feature-size scaling [1], multi-bit per cell [2,3] and area reduction are essential.