JEDEC publishes UFS 5.0 spec with up to 10.8 GB/s sequential throughput

[harlan4096]

KIOXIA starts sampling UFS 5.0 devices after JEDEC publishes the 5.0 spec



UFS 5.0 has been published, and the spec targets up to 10.8 GB/s for sequential read and write throughput. That is close to a 2x jump over the 5.8 GB/s figure commonly quoted for UFS 4.0 class devices, and it also exceeds the 8.0 GB/s one-direction bandwidth limit of a PCIe 4.0 x4 link on paper. 

The speed increase is tied to the physical layer update. KIOXIA’s announcement points to MIPI M-PHY v6.0 and its HS-GEAR6 mode (up to 46.6 Gbps per lane), which is how a 2-lane configuration reaches about 10.8 GB/s effective performance. 

The UFS 5.0 features include improved signal integrity, improved power integrity, and new data protection features, rather than only raising the peak transfer number. 

Continue Reading...