In recent years, the demand for NOR flash memory in automotive applications has significantly increased. Initially, NOR flash was primarily used in infotainment systems and engine control units. However, as vehicles become more computerized, the usage of NOR flash has expanded across various automotive systems. Particularly in advanced driver assistance systems (ADAS), digital instrument clusters, and infotainment systems, the market for high-density, high-performance NOR flash is growing rapidly.
The ADAS market is expanding quickly, driven by the need for enhanced driving safety. Most current ADAS solutions rely on cameras—such as rearview cameras—to detect potential hazards around the vehicle (see Figure 1). More advanced systems incorporate sensor cameras that assist with functions like automatic collision avoidance, lane-keeping, and parking. As cars move toward full autonomy, the demand for these sensing cameras will continue to rise. These systems require more complex processing than traditional observation cameras, which means efficient SoCs are essential. Consequently, the need for high-density, high-performance NOR flash memory is also increasing (see Figure 2).
Digital dashboards have evolved from simple analog gauges to full HD, high-resolution displays. These modern interfaces not only show speed and fuel levels but also integrate navigation, entertainment, and other critical information. The larger display sizes mean more content needs to be processed, which puts a higher load on the system. Traditional embedded flash alone may not be sufficient, so external high-density NOR flash is often required to support these advanced digital instruments (see Figure 4).
Infotainment systems have also seen significant changes. They now run complex operating systems like Linux, which require more memory than traditional setups. While eMMC and SD cards are commonly used for storage, they cannot match the speed needed for booting up or running real-time applications. Therefore, NOR flash remains crucial for storing fast-boot code and mission-critical data, ensuring quick system startup and smooth performance (see Figure 6).
When designing automotive systems, it's important to ensure fast boot times, especially when the car starts. Storing large amounts of data in RAM can drain the battery, so using flash memory is a better option. HyperFlash technology offers read speeds up to 333MB/s, making it ideal for applications that require rapid data access. The HyperFlash GL512S parallel 512Mb NOR flash and the SPI/Quad SPI versions are three to five times faster than traditional alternatives while maintaining a minimal pin count (see Figure 8).
With its high-speed performance and compact design, HyperFlash enables automotive manufacturers to add more features and larger displays without sacrificing responsiveness. This makes it an excellent choice for next-generation automotive systems. As connected cars become more advanced, the demand for reliable and high-performance NOR flash memory will continue to grow. Engineers should consider factors such as speed, image quality, and pin efficiency when selecting the right memory solution for different vehicle types.
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