The big sales of Xiaomi SU7 cars really surprised many people, and it exceeded 50,000 units in 27 minutes on the night of sale, and 88,898 units in 24 hours. Many things that can't be done by real car manufacturers have been realized by a mobile phone manufacturer.
And as more and more users get this Xiaomi SU7, our understanding of this car has become more in-depth. Among them, there is a blogger at station B, who dismantled its on-board system, and also let us know what storage scheme Xiaomi SU7 uses and how much storage capacity it has.
The picture comes from the Internet
From the teardown video, it can be seen that the first batch of intelligent cockpit controllers found Xiaomi SU7 come from Qualcomm Snapdragon 8295P processor, on its left side are two chips engraved with the word Micron, according to the encoding information, it is queried that there are two 8GB capacity LPDDR4 specification memory.
The picture comes from the Internet
In addition, two Micron memory chips were found next to the two NVIDIA GPUs of the Xiaomi SU7, one of which is a 256GB particle for UFS3.1 and a 128GB chip for UFS2.1. According to Taiwanese media reports, the main control chip of Micron UFS particles on Xiaomi SU7 comes from the main control solution of Huirong Technology, as the world's largest supplier of NAND flash memory main control chips, its products have absolute advantages in terms of performance and reliability.
It is not difficult to see that in order to improve the intelligent cockpit and intelligent driving experience, Xiaomi SU7 adopts more UFS standard storage solutions, which has greater advantages in terms of speed, power consumption and safety performance than eMMC flash memory. The first batch of automotive storage suppliers are LPDDR4 and UFS automotive storage supplied by Micron, among which Micron's UFS3.1 storage and storage products are equipped with Huirong Technology's SM2754 main control chip.
I believe that many users will wonder why they care about the SU7 storage system, rather than the battery or performance. In fact, today's car is no longer a means of transportation, but through information technology to make it more intelligent, so that we can enjoy more services in the process of driving.
For example, the vehicle infotainment system, intelligent cockpit system, intelligent driving assistance system, OTA software upgrade management system, etc., are inseparable from the support of storage devices, especially the application of automatic driving functions, which will generate a large amount of data for storage and processing in real time, which can foresee the explosive growth of the demand for car storage in the future, which will be a huge development market and huge development potential for the automobile country.
According to the research agency, with the improvement of the level of autonomous driving, it is expected that the data storage capacity of the L4 driverless car can exceed 5TB, so it is foreseeable that the automotive industry will be another outlet for the storage market in the future.
Of course, in addition to paying attention to capacity parameters, on-board storage also puts forward higher requirements for the performance and stability of the storage medium. Xiaomi SU7 part of the storage media has a built-in main control product of the latest UFS3.1 standard, which uses the SM2754 main control of Huirong Technology, supports dual-channel HS-Gear-4 standard, SCSI architecture model (SAM) and UniPro1.8 standard, and can achieve sequential read speed of 2000MB/s, sequential write speed of 450MB/s of high-performance storage, and has a relatively low system design threshold, so it has been unanimously recognized by the automotive supply chain system.
Don't underestimate this automotive-grade memory chip, it takes a long time to assemble it in a car. Generally, it takes at least three to four years from product planning to mass production, during which it needs to pass a series of automotive certification such as AEC-Q100, IATF16949, ISO26262, etc., and it also needs to pass the rigorous reliability test of automobile manufacturers before leaving the factory. Once a product meets the standard, it needs long-term supply and service support, so it can be seen how difficult it is to enter the automotive supply chain system.
However, as a new blue ocean in the storage industry, on-board storage is both an opportunity and a challenge. Therefore, many storage manufacturers have also seen this cake and began to actively lay out the on-board memory track.
In March, Silicon Wing also announced the launch of its flagship UFS4.0 controller, the SM2756, to meet the growing demand for AI phones and other high-performance applications, including automotive and edge computing. Based on the leading 6nm nano-EUV technology and the MIPIM-PHY low-power architecture, the main controller provides the best balance of high performance and power efficiency to meet the all-weather computing needs of today's high-end AI mobile devices.
At the same time, the SM2756 master controller achieves sequential read performance of more than 4,300MB/s and sequential write speed of more than 4,000MB/s, supports the widest range of 3DTLC and QLCNAND flash memory, and has a capacity of up to 2TB, providing a new option for the next generation of in-vehicle storage. It is believed that in the future, Huirong Technology can give full play to its own technological advantages and work with more automobile manufacturers to give users a more comfortable driving experience.
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