具有最高安全证书的微米存储器

S =汽车行业更安全的存储器-美光更安全存储器

Today’s vehicles increasingly rely on semiconductors to enable control systems that enhance driver and passenger safety. 反过来, these and other significant benefits are driving the trend toward even greater use of semiconductors, most notably highly complex semiconductors 和 associated high-performance memory and storage in the car. 集体, this trend increases driver and passenger safety is projected to drive the growth of semiconductor consumption to one of the highest rates within the semiconductor industry as the automotive industry accelerates to deliver fully autonomous, 无人驾驶车辆.

为ADAS和IVE带来安全

The lines between advanced driver-assistance systems (ADAS) and in-vehicle entertainment (IVE) are becoming blurred. 这是, the two domains interact with one another to such a degree that the need for system-level safety (汽车 Safety Integrity Level or ASIL) is also finding its way into IVE.

例如, 驾驶员监控系统(DMS), which is mandatory to implement the next form of HMI (human-machine interface), 手势识别. 图1 shows the rate at which ADAS levels will increase to match the functionality required in features such as DMS. Simple gestures recognized by the DMS can also control IVE and body control functions within the vehicle, 包括调节立体声音量或打开或关闭天窗.

The DMS also records the physical position of the driver and passengers so that, 如果需要安全气囊, this information can be used to determine the right level of charge for each airbag to prevent harming these people. 越来越多地。, these functions offered by the respective system manufacturers are becoming inextricably interconnected. 监控司机意识, recognizing gestures and providing information to properly deploy airbags reflect the growing need for functional safety with the upmost integrity (Figure 2). 基于一般行业资源, 安全气囊需要支持ASIL D, 业内最严格的安全要求.

自主水平和安全概念

FuSa使自动驾驶汽车成为可能

集成系统所必需的功能安全

In short, this integration of DMS and IVE is just one example of many. It underscores how functional safety systems permeate the vehicle and are quickly becoming nonnegotiable for applications that historically did not require ASIL support, 比如手势识别. It is also enlightening to see not only how these applications need ASIL but also how they can support the highest ISO 26262 considerations and memory manufacturing.

While several approaches are recognized by ISO 26262 and can be used to achieve the requisite ASIL — including decomposition and hardware evaluation — employing an ISO 26262 ASIL D-certified DRAM provides many distinct advantages and values over these alternative approaches. These advantages include improved time to market and enhanced safety, but there could be cost and power increases from the use of redundancy for an approach based on decomposition.

当针对DRAM评估ISO 26262标准时, 几种情况反映了DRAM是III类硬件元件而不是. a class II hardware element as it was originally specified by the industry. 因此, approaches to achieve the requisite ASIL might not be based on hardware evaluation after the first design iteration. This situation leaves the designer with a couple of choices going forward: Either secure an ISO ASIL-certified DRAM for future designs or rely on decomposition, 哪些会增加成本, 前面讨论过的能力和风险.

最安全的DRAM

2022年6月, 微米 introduced the highest safety-certified LPDDR solution in the industry, 业界第一个也是唯一一个通过ISO 26262 ASIL d认证的存储器. The ASIL D-certified LPDDR5 family was created to address the challenges of and demands for today’s and tomorrow’s most demanding automotive designs while enabling fastest time to market, 更低的风险和潜在的最低的功率和成本.

To learn more about the highest safety-certified solution in the industry, read “安全关键汽车系统中的DRAM,” a 微米 white paper that discusses functional safety as it applies to memory and systems and explains why 微米’s memory is the SAFER choice.

额外的资源

• 汽车大趋势及其对内存和存储的影响 (白皮书)
• 汽车存储器:质量vs功能安全及其重要性 (博客)
• 数据密集型汽车应用需求 高级内存和存储 (视频)
• 微米 汽车 Portfolio Featured in Li Auto L9 and Desay SV IPU04
• 参观 微米汽车页 和 汽车功能安全|美光科技有限公司. 白皮书、视频、汽车沙巴体育结算平台组合等页面.

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 incorporates five key concepts: (S) Safest solution currently available in the industry, (A)汽车思维, (F)故障覆盖率, (E)工程领导和(R)风险管理. Each letter associated with the acronym SAFER has a corresponding blog with associated content.