Highly reliable 26nm 64Gb MLC E2NAND (Embedded-ECC & Enhanced-efficiency) flash memory with MSP (Memory Signal Processing) controller
Hyunyoung Shim, Seaung-Suk Lee, Byungkook Kim, Namjae Lee, Doyoung Kim, Hankyum Kim, Byungkeun Ahn, Young-Ho Hwang, Ho-Seok Lee, Jumsoo Kim, Youngbok Lee, Heeyoul Lee, Juyeab Lee, Seung-Ho Chang, Joong-Seob Yang, Sung-Kye Park, S. Aritome, Seokkiu Lee, Kun-Ok Ahn, Gihyun Bae · 2011
A highly reliable 26nm 64GB MLC E2NAND (E2: Embedded-ECC & Enhanced-efficiency) flash memory has been successfully developed. To overcome scaling challenges, novel integration and operation technologies, such as 2-dummy word-line (WL) scheme, depletion suppressing process, hydrogen reducing process and Virtual Negative Read (VNR) scheme are introduced. And also, Memory Signal Processing (MSP) controller is used for enhancing performance and reliability. Finally, 5K cycling and 1 year data retention can be greatly achieved.