A 128Gb (MLC)/192Gb (TLC) Single-Gate Vertical Channel (SGVC) Architecture 3D NAND using only 16 Layers with Robust Read Disturb, Long-Retention and Excellent Scaling Capability

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作者
Lue, Hang-Ting [1 ]
Du, Pei-Ying [1 ]
Chen, Wei-Chen [1 ]
Lee, Yung-Chun [1 ]
Hsu, Tzu-Hsuan [1 ]
Yeh, Teng-Hao [1 ]
Chang, Kuo-Pin [1 ]
Hsieh, Chih-Chang [1 ]
Huang, Chiatze [1 ]
Lee, Guan-Ru [1 ]
Chen, Chih-Ping [1 ]
Chen, Chieh-Fang [1 ]
Chin, Chia-Jung [1 ]
Chen, Y. J.
Lu, W. P.
Yang, Tahone
Chen, Kuang-Chao
Hung, Chun-Hsiung [2 ]
Wang, Keh-Chung [1 ]
Lu, Chih-Yuan [1 ]
机构
[1] Macronix Int Co Ltd, Emerging Cent Lab, 16 Li Hsin Rd,Hsinchu Sci Pk, Hsinchu, Taiwan
[2] Macronix Int Co Ltd, Design Ctr, 16 Li Hsin Rd,Hsinchu Sci Pk, Hsinchu, Taiwan
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We have successfully developed a 128Gb MLC (or 192Gb TLC) 3D NAND Flash using 16-layer SGVC architecture. The produced memory density is 1.6 Gb/mm(2) for MLC or 2.4 Gb/mm(2) for TLC (including CMOS peripheral area, spared BL's and blocks). Such memory density is comparable to 48-layer 3D NAND using the popular gate-all-around (GAA) structures. SGVC has the important advantage of much smaller cell size and pitch scaling capability which allows very high-density memory at much lower stacking layer number. SGVC possesses very robust read disturb immunity (>120M read) and long-retention (>40 years at room temperature) at fresh state that can suppress the very frequent wear-leveling and refresh operations needed for other 3D NAND Flash devices and is very suitable for read-intensive memory. With further stacking/scaling, it is possible to realize low-cost 1Tb single-chip solution at merely 48 layers.
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页数:4
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