ISSCC 2023: 1.7Tbit flash IC has five bits per cell

Intel has made a move from four bits per cell to demonstrate a 1.7Tbit NAND flash IC, which it described at ISSCC 2023 this week. Fabricated over 192 layers (cross section, right) of floating gates, the actual capacity is 1.67Tbit, spread over 73.3mm2 – equating to 23.3Gb/mm2 – which can be down-shifted to 1.33Tbit 4bit/cell (18.6Gb/mm2) ...
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