Kioxia Introduces 2Tb QLC NAND Flash

Kioxia Corporation, a leading provider of memory solutions, has recently made significant strides in NAND flash technology with the introduction of their 2Tb QLC NAND flash devices. Leveraging advanced fabrication techniques including both vertical and lateral scaling, as well as innovative CBA (CMOS Bonded to Array) technology, Kioxia is set to redefine the capabilities of NAND flash storage.

Vertical and Lateral Scaling for Enhanced Performance and Density

Vertical scaling involves stacking memory cells vertically within a die, thereby increasing the storage density without enlarging the footprint. This technique allows Kioxia to maximize the storage capacity per chip, achieving impressive storage densities with reduced power consumption and improved performance.

Lateral scaling, on the other hand, focuses on shrinking the individual components of the memory cell horizontally. By refining the manufacturing process, Kioxia can pack more memory cells into a smaller area, further enhancing the efficiency and density of their NAND flash solutions.

CBA Technology: CMOS Directly Bonded to Array

Kioxia's innovative CBA (CMOS directly Bonded to Array) technology represents a significant advancement in NAND flash architecture. This approach integrates the CMOS logic directly into the NAND flash array, minimizing the interconnect length and reducing signal latency. By bringing the control circuitry closer to the memory cells, CBA technology not only enhances data transfer speeds but also optimizes the overall energy efficiency of the device.

Achieving High Capacity with Stacked Die Packaging

One of the standout features of Kioxia's 2Tb QLC NAND flash is its capability to achieve substantial storage capacities through die stacking. By stacking 16 individual 2Tbit dies in a single package, Kioxia can create a compact yet powerful storage solution. The package measures just 11.5 x 13.5mm with a height of 1.5mm, yet it can deliver a staggering 4TB of storage capacity. This compact form factor makes the device ideal for applications where space efficiency is critical, such as in data centers and high-performance computing environments.

Conclusion

With the introduction of their 2Tb QLC NAND flash incorporating vertical and lateral scaling techniques along with CBA technology, Kioxia reaffirms its commitment to pushing the boundaries of memory innovation. These advancements not only increase storage density and performance but also pave the way for more energy-efficient and compact storage solutions in the future. As technology continues to evolve, Kioxia remains at the forefront, driving the next generation of NAND flash memory solutions for diverse applications across industries.