A 58-nm 2-Gb MLC "B4-Flash" Memory with Flexible Multisector Architecture. - Taku Ogura; Yasushi Kasa; Kazuhide Kurosaki; Mitsuhiro Tomoeda; Hisakazu Otoi; Satoshi Shimizu; Masafumi Katsumata; Natsuo Ajika; Kazuo Kobayashi (IEEE J. Solid State Circuits, 2017)