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Design of Huge Capacity Memory Based on NAND Flash

Bin Tang

Abstract

In order to comply with the requirements of the memory capacity and bandwidth in storage system,a high capacity memory is designed.This memory uses NAND Flash as the storage medium and a single board has 144 pieces of NAND Flash,dividing into three groups with each group having 48 chips.This can reduce the speed of monolithic memory and achieve a huge capacity of 576 Gbyte.It also employs FPGA to expand the read write bandwidth by parallel operations on multiple pieces of Flash.Aiming at the shortcoming of bad block in NAND Flash,a management method is proposed to endure the reliability of the data.

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Key concepts: NAND gate, Computer science, Flash memory, Flash file system, Computer hardware, Embedded system, Flash memory emulator, Computer memory