The continuous upgrading of the in-vehicle central control screen and intelligent driving has become an important factor affecting our intelligent travel. Smooth vehicle intelligent system interaction and function expansion have become the basic disk. For now, the average vehicle stores about 35GB of data, but with intelligent experience, advanced assisted driving implementation, hundreds of GB to TB of storage is imperative. It can be seen that a huge car gauge storage market demand is gathering momentum, large capacity, high-performance, highly reliable car gauge storage has become the standard configuration, and will continue to upgrade with the growth of demand.
    However, compared with consumer storage, vehicle gauge storage is more demanding, which has clear requirements for the operating temperature range, working stability, defective rate, service life, and vehicle gauge safety specifications to ensure the reliability of the vehicle during high-speed driving. On this basis, it is a higher transmission efficiency, so UFS 4.0 from standard compliance, verification, and then to mass production is a very difficult job.

Stringent vehicle specification class certification
    Advancing vehicle level storage means passing numerous certification thresholds. The phone can crash or slow down in harsh use environments, which may be solved by restarting or suspending use. But if it's a car driving at high speed or crossing mountains and rivers, the system suddenly crashes that can be a joke with life. How to make the vehicle electronic system can run smoothly in cold or high temperature environment, wide temperature operation has become a hard condition.
    The vehicle regulation certification threshold is not customized by the manufacturer according to its own wishes, and it must go through massive testing and verification to meet the car regulations, which is what we often say, vehicle specifications and standards certification. Among them, AEC-Q100, IATF 16949 and so on are common.
    AEC-Q100 is one of the standards developed by the Automotive Electronics Council to evaluate and verify the reliability and performance of automotive electronic components. It is a very demanding certification that requires it to work well in extreme temperatures, vibration, humidity and other harsh environments. For example, if the memory chip wants to reach the car gauge level, it must pass the Temperature Stress Test, Temperature Cycling Test, Humidity Stress Test, humidity stress test. The High Temperature Storage Test, the Vibration and Shock Test, and so on, just sound like a headache.

    IATF 16949(International Automotive Task Force 16949) is a special extension of the ISO 9001 quality management system standard for the automotive industry. As the name suggests, the standard is to ensure the maintenance of stable, high quality, consistency and safety of products in the automotive supply chain, which has extremely high requirements for supply chain quality and process control, especially for automobile manufacturers and suppliers, this standard is indispensable. If the memory chip wants to enter the field of vehicle regulation, IATF 16949 is also the only way.
    If you open the Kaixia UFS 4.0 introduction page, you can see the serious standards designed for vehicle specification applications, including the previously mentioned IATF 16949, AEC-Q100 stress test quality standard, PPAP, operating temperature meets the wider range of class 2 -40 ° C to +105 ° C.

Pave the way for smart travel
    Under the premise of meeting safety standards, making products competitive, higher efficiency has become a winning weapon. In particular, with the improvement of on-board processing performance and the transformation of automotive Electrical/Electronic Architecture (EEA), how to improve advanced driver assistance systems and infotainment systems? How to provide performance guarantee for vehicle network communication and vehicle ECU will become a new problem.
    In particular, ADA and L3 level automatic driving have become popular, and the traditional single-function integrated ECU has been unable to meet the response needs, and the domain type architecture and the future central integrated architecture have become a new trend. Similar to personal computers, in-vehicle ECUs play the role of central processing, to quickly acquire cameras, lidar sensors, high-precision data maps, V2X data, but also to quickly run large models, artificial intelligence algorithms, a large number of reads and writes, but also doomed to the vehicle data storage to be reliable, large capacity and efficient.
    Compared with e-MMC, UFS has more advantages in transmission rate, it uses a serial interface and supports full-duplex communication, that is, data can be read and written at the same time. As early as 2020, UFS 3.1 achieved a transfer speed of 2,320MB/s, and UFS 4.0 increased this number to 4,640MB/s. This means that UFS is more suitable for implementing advanced intelligent driver assistance systems such as ADAS.

    Not only that. Kaixia has also actively participated in the development of M-PHY and UniPro specifications for UFS 4.0, which can better combine equipment to achieve data transmission in an efficient and reliable way, thereby improving storage performance and overall system response speed, and thus promoting the technological development process of the entire industry. In fact, the model above L3 level has UFS 3.1 storage as the mainstream choice, with the continuous improvement of vehicle sensors and computing power, higher specifications of data transmission program is imperative, UFS 4.0 products will become one of the ideal choices in the future.
    As one of the first products launched to the market, Kaixia UFS 4.0 has filled the gap of UFS 4.0 without actual products in the industry, and its more important significance is to solve the problem of whether the on-board SoC should be updated first or the on-board UFS 4.0 has become a "chicken and egg, or egg and chicken" dilemma. And provide a better hardware foundation for future smart travel.