Introduction

Pseudo Single-Level Cell (pSLC) is the new technology of using Multi-Level cell (MLC) or Triple-Level cell (TLC) NAND Flash in a way that reduces the number of bits stored in each cell to one. Reducing the amount of stored bits in each cell to one increases the reliability and lifetime of the NAND Flash memory.

Why Pseudo-SLC?

Many write-intensive applications, such as video surveillance, machine learning and HPC, require high program and erase cycles. SLC NAND Flash offers greater endurance and performance over other NAND Flash types, but at a higher cost per bit.

How Does It Work?

As NAND technology becomes cost-driven per gigabyte, 3D TLC NAND provides an excellent balance in cost and product lifetime. SMART’s pseudo-SLC (pSLC) products deliver improved endurance and performance in applications that requires higher level of data integrity and expected product lifetime. By implementing NAND vendor-specific commands and algorithms in the Flash controller firmware, 3D TLC NAND can be operated in 1-bit pSLC mode where endurance and performance behaviors are in line with native SLC NAND. SMART’s pSLC technology is designed to optimize the balance between cost and performance.