1. SATA 6Gb/s SSD Controller Solution Supporting 3D TLC NAND
SM2258
SATA 6Gb/s SSD Controller Solution Supporting 3D TLC NAND

2. SM2258
The world’s first complete merchant ASIC/firmware SATA 6Gb/s SSD controller solution supporting 3D TLC NAND.
Silicon Motion’s proprietary Enhanced NANDXtend technology.
High performance and low power allow SSD OEMs to deliver the most advanced, cost-effective and reliable SSDs in the market.

3. Performance of SM2258 + Micron B0KB 3D TLC
The best performance and cost-optimized four channel SATA 6Gb/s client SSD controller
128GB
256GB
512GB
Performance of SM Micron B0KB 3D TLC

4. NANDXtend™ ECC Technology
Power efficiency + 20%.
NANDXtend™ ECC Technology
Decoding efficiency + 40%
Correction capability on soft-decoding + 25%.
Correction capability on hard-decoding x 2
X 3 PE Cycle
3 level Error Correction Algorithms to extend PE Cycle up to 3X
Reliable ‧ Efficient ‧ Power saving

5. Design with NANDXtend ECC technology, SM2258 extends the SSD lifespan and delivers sustain performance.
High
NANDXtend provides high efficiency decoding to avoid performance drop in dirty drive.
High
Performance
Clean drive
Dirty drive
ECC impact performance
Low
Lifespan
50%
100%

6. SM2258 features advanced Direct-to-TLC and SLC Caching algorithms for optimal sustained read and write performance with TLC NAND.
SLC region
SSD capacity
SLC speed
Write Speed (MB/s)
500

7. SMI SSD Controllers Fully Support 3D NAND
SATA 6Gb/s SSD Controller
SM2260
PCIe NVMe 1.2 SSD Controller
3D MLC NAND
3D TLC NAND
3D MLC NAND
3D TLC NAND