Sitting back and letting your autonomous car drive you to work may still be a couple of years away, however automotive OEMs are rolling out advanced driver assistance systems (ADAS) applications that play a key role in helping the driver make safer driving decisions. As a consumer, I love having the extra protection and notification of what is happening around me and once I get used to driving a car with these features, 没有它们，几乎不可能回到车上.
实现自动驾驶汽车的愿景, 复杂的范围很广, state-of-the-art technologies that need to come together seamlessly and operate flawlessly over the lifetime of the vehicle. Across the board, whether they are revolutionary sensor technologies that are fused together to realize perfect “vision,” or computing platforms that are in excess of thousands of tera operations per second (TOPS) of compute performance, the technology that is required to create the fully functional self-driving car is some of the most demanding across any market segment.
实现这一突破对内存和存储性能的要求也不例外. Level 2+ and Level 3 ADAS functionality is driving the need for 256-to-512-bit memory bus widths of LP5X that operate at an I/O signaling rate of 8.5Gbps. And while the overused tagline of “data center on wheels” has run its course – self-driving cars really do require best in class, 数据中心的性能, reliability and safety. Therefore, Micron introduced SAFER automotive memory that provides unique capabilities for functional safety with engineering leadership and random and systematic fault coverage. This SAFER framework provides guidance when considering breakthrough automotive memory solutions and support.
核心是极高的可靠性和整个系统的完整性, there has been increased focus on the different elements of a given system and the impact on overall functional safety. 随着软件足迹有望从 1亿行代码 在今天的高端汽车上要写10亿行代码 in the future在美国，汽车内存的重要性已经从后座转移到了前座.
在汽车市场拥有超过30年的内存和存储经验, Micron recognized the role of memory would play in addressing the increased complexity of functional safety. 功能安全将是实现自动驾驶汽车的关键.
Micron has made significant investments in functional safety technology and processes to ensure that, 作为汽车行业领先的内存和存储供应商, we will supply best-in-class products that are designed with the most stringent safety requirements in mind. 在美光，这个过程从沙巴体育结算平台的最开始就开始了. As such, we are proud of holding the unique distinction of being the safest memory currently in the industry. 当我们审视我们提供的安全能力时, 我们认识到美光的解决方案是行业中更安全的解决方案.
自主水平和安全概念
FuSa实现自动驾驶汽车
考虑到这些系统对车辆控制的影响, it is important that all the components that go into these systems meet the strictest quality and safety standards. The ISO 26262 standard has established the ASIL (automotive safety integrity level) standard which ranges from A to D to specify the requisite safety level of the various systems within the vehicle. ASIL A是最低的指标，ASIL D是最高的指标. 正确看待事物, 1 FIT意味着该部件在10亿个运行小时内发生1次故障. This means that the product of the number of devices and their operating hours should be 1 billion. So, the FIT rate can be the number of failures in 1 million devices for 1000 operating hours or 1000 devices for 1 million hours.
典型的汽车ASIL分类
Micron is the world leader in automotive memory and works closely with our customers to understand ISO requirements and we recently introduced LPDDR5 Micron SAFER Automotive memory - the industry’s first ASIL-D LPDDR5 compliant memory.
美光将SAFER汽车存储器定义为:
S =目前业界最安全的解决方案
- 业界首款符合ISO 26262 ASIL d标准的内存
- 美光安全办公室负责管理全公司的ISO 26262流程
A = Automotive Mindset
- 超过30年的汽车行业的承诺
- 汽车行业领先- DRAM, NAND, NOR能力:FuSa(功能安全)，安全性
F = Fault Coverage
- ASIL D系统故障覆盖-随机故障覆盖的安全元素
- 实时故障检测, 捕获顶级故障模式(TLFM), data corruption, addressing, lost data
E =工程领导
- Architecture team works closely with OEM customers to optimize Micron memory to their system design
- 13 dedicated engineering labs worldwide to support customers in the early stages of their design and then during bring up to ensure the fastest time to market with the lowest risk
R = Risk Management
- 减少内存集成商支持，最高级别的安全保证
- 完整的安全相关文件，支持客户进行安全分析
美光继续提高标准，努力为汽车存储器的质量标准, 它们被定义为:…一种卓越的衡量标准或一种没有缺陷的状态, 缺陷和显著差异…….* Micron SAFER automotive memory is striving for: the absence from risk due to hazards caused by the failure of E/E systems during operation… to improve safety, 检测故障和控制故障.e.,. 移除或消除不确定性. *
(*)可在供应商或系统集成商层面进行检测和控制.
**基于ISO 26262文档
美光SAFER汽车存储器博客系列
This series provides insight and guidance when considering breakthrough automotive memory solutions and support. SAFER包含五个关键概念:(S)目前业内最安全的解决方案, (A) Automotive mindset, (F) Fault coverage, (E)工程领导和(R)风险管理. 与首字母缩略词SAFER相关的每个字母都有一个相应的博客，其中包含相关的内容. 查看美光的功能安全页面，了解更多博客信息: 汽车功能安全.
