A 1.8 Gb/s/pin 16Tb NAND Flash Memory Multi-Chip Package with F-Chip of Toggle 4.0 Specification for High Performance and High Capacity Storage Systems
Jangwoo Lee, Daehoon Na, Anil Kavala, Hwasuk Cho, Jun-Ha Lee, Manjae Yang, Eunjin Song, Tongsung Kim, Seon‐Kyoo Lee, Dong-Su Jang, Byung-Kwan Chun, Youngmin Jo, Sunwon Jung, Doo-Il Jung, Chanho Kim, Daewoon Kang, Taesung Lee, Byunghoon Jeong, Chi-Weon Yoon, Dongku Kang · 2020
A 1.2 V, 1.8 Gb/s/pin 16Tb-NAND flash memory multi-chip package incorporating with 16-dies of 1-Tb NAND flash memory and the 3rdgeneration F-Chip is proposed. The proposed F-Chip is developed to meet the performance requirements of high capacity storage devices that adopts PCIe Gen 4 host interface for faster data throughput. It is implemented with Toggle 4.0 standard on dual bi-directional transceiver architecture to achieve maximum valid data window on SSD channels. Also, it facilitates training between F-chip and NAND using on chip DLL and BIST to achieve sufficient signal integrity on in-package channel for 1.8Gb/s/pin. This work achieves a 35% improvement in the I/O operational speed performance and a 23% reduction in the I/O power consumption in comparison with the previous generations.