NAND flash pioneer Toshiba debuted its 19-nm NAND flash last year and swung into volume production over the summer. The chips feature a two-bit-per-cell architecture for a total of 64 Gb of capacity in a 94 mm2 device and can deliver write speeds as high as 25 MB/s. Toshiba recently announced a family of embedded NAND flash memory modules aimed at smartphones, video cameras, and tablets. Densities range from 4 GB to 128 GB. The company also has three-bit-per-cell chips under development.