Kioxia has announced the world’s first UFS 4.0 embedded high-speed flash memory aimed at automotive applications and has started providing samples.
Kioxia (formerly Toshiba Memory) pioneered UFS flash memory technology, and the latest UFS 4.0 features a JEDEC standard small package, integrating its own BiCS 3D flash memory and controller, with capacities of 128GB, 256GB, and 512GB available.
Performance has seen significant improvements, with sequential read speeds increasing by 100% and sequential write speeds by 40%.
Kioxia’s UFS 4.0 utilizes MIPI M-PHY 5.0 and UniPro2.0 technologies, offering a theoretical bandwidth of up to 23.2Gbps per lane, with dual lanes per device reaching 46.4Gbps.
The new product also supports a High-Speed Link Startup Sequence (HS-LSS), with the speed of the transmission link startup (M-PHY and UniPro initialization sequence) between the device and the host exceeding the traditional UFS HS-G1 Rate A of 1248Mbps by about 70%.
In other aspects, it supports a wide temperature range, meets AEC(7)-Q100 Grade2 requirements, enhances reliability for complex automotive applications, and supports multiple advanced features and functions to meet the stringent demands of automotive applications, including data refreshing and extended diagnostics.
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