UFS memory controllers for mobile
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January 30, 2024
Nick Flaherty
Phison Electronics has launched a range of Universal Flash Storage (UFS) controllers for smartphones, building on its experience in the automotive market.
UFS is a higher performance memory protocol that boosts transfer speeds and reduces power and Phison has developed memory controllers from UFS2.2 up to UFS4.0.
As smartphone devices require higher performance, the storage devices of many entry-level 5G models have transitioned from eMMC to UFS 2.2 storage, and even flagship models of 4G phones have begun adopting the UFS 2.2 specification.
Compared to the half-duplex mode of eMMC, the full-duplex mode of UFS 2.2 significantly increases read speeds by three times, not only handling smartphone functions that require processing large amounts of data (such as high-resolution recording and video playback), but also consuming lower power under the same performance speed as eMMC. This helps improve the battery life of smartphones and tablets, meeting the high-performance and low-power consumption needs of mobile devices.
The UFS 2.2 controller PS8327 is built in a 22nm process and achieves speeds of 1000MB/s even with NAND Flash capacity as low as 64GB storage. It uses Phison’s in-house sixth-generation LDPC ECC engine, providing more reliable and powerful error correction capabilities. It supports existing NAND Flash requirements from various NAND manufacturers and is expected to support next-generation NAND product specifications.
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“With over a decade of research and development experience in the UFS field, Phison has established credible expertise in the development, validation, and technical capabilities of NAND controllers,” said K.S. Pua, CEO of Phison.
“The PS8327 represents the culmination of Phison’s decade experience of UFS research and development that has garnered significant industry praise. Coupled with Phison’s track record of having numerous UFS storage solutions validated by major smartphone chipset suppliers, PS8327 was quickly adopted and deployed by prominent NAND manufacturers upon its release. It is anticipated that mobile devices equipped with Phison’s PS8327 UFS storage solution will be highly competitive in the market.”
Phison is debuting three other UFS controllers this year: the PS8325, PS8329 and PS8361 to cover entry-level to flagship smartphones.
The UFS 3.1 PS8325 is aimed at high-end smartphones and is built in TSMC’s 12nm process with a dual-channel design supporting the latest 1TB NAND from various NAND manufacturers for a total capacity of 1TB.
THis uses Phison’s self-developed 4KB LDPC error correction engine, providing advanced and powerful ECC error correction capabilities, significantly enhancing the stability and lifespan of smartphone storage. The PS8325 has already secured design wins from many international leading smartphone manufacturers and is expected to start mass production in the first quarter of this year.
The UFS 3.1 PS8329 focuses on the mid-range smartphone market. Built on 22nm process, this is the smallest UFS 3.1 controller in the market and can achieve read and write speeds exceeding 2000MB/s through a single-channel configuration. The PS8329 is planned to begin sampling in June of this year.
The 12nm UFS 4.0 PS8361 is aimed at high end smartphones and uses a 4-channel design with read and write speeds exceeding 4000MB/s, twice the performance of UFS 3.1 for quick app launches and multitasking. It also improves the power efficiency and the battery life of mobile devices. PS8361 has already been designated for use by NAND manufacturers and is expected to begin shipping in the second half of this year.
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