Modern Advanced Driver Assistance Systems (ADAS) have evolved into intelligent systems integrating environmental perception, behavioral decision-making and vehicle control. Their hardware architecture typically consists of a sensor suite, high-performance computing units and actuators. In this complex system, the storage module undertakes the secure storage of core program codes, high-precision map data and sensor calibration parameters.
The embedded MultiMediaCard (eMMC) has become an ideal choice for ADAS storage subsystems thanks to its highly integrated controller, standard interface protocol and robust data management mechanism. Its built-in Flash Translation Layer (FTL) and bad block management functions effectively ensure data integrity and long-term reliability under harsh operating conditions such as vehicle vibration and temperature fluctuations.
In ADAS systems, the 256GB eMMC plays a core role in providing sufficient storage space for multi-channel high-definition video streaming recording, high-precision map caching and Event Data Recorder (EDR). Its advantage lies in supporting the ADAS controller to cache driving videos for consecutive hours, meeting the needs of closed-loop data training for autonomous driving. Meanwhile, its high-speed read-write performance (e.g., sequential read speed up to 400MB/s) ensures the system can quickly save critical data frames when an emergency event is triggered.
Compared with low-capacity storage solutions, the 256GB capacity significantly reduces the risk of data overwriting caused by insufficient storage space, providing more generous data processing margin for L2+ and higher-level autonomous driving systems.
The RS70BT8G4M08G launched by RAYSON is a 256GB industrial-grade storage chip compliant with the eMMC 5.1 standard, adopting advanced TLC NAND flash memory technology and FBGA153 package (11.5mm × 13.0mm). The device supports 1.8V/3.3V dual-voltage operation, with an operating temperature range of -20℃ to 85℃, adapting to the wide-voltage and wide-temperature operating environment of automotive electronic systems.
It integrates intelligent wear-leveling algorithm, Error Correction Code (ECC) and dynamic thermal management internally, delivering excellent durability and stability in the continuous high-load data read-write scenarios of ADAS. Compared with similar eMMC products in the industry, the RS70BT8G4M08G has obvious advantages in multiple key parameters:
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Key Parameters | RS70BT8G4M08G (RAYSON) | Typical Value of General Industrial-Grade eMMC | Core Value for ADAS Systems |
Storage Capacity | 256GB | 32-128GB | Supports local updates of high-precision maps and long-term multi-sensor data recording, meeting the storage requirements of L2+ ADAS |
Interface Speed | eMMC 5.1 (up to 400MB/s) | eMMC 5.0 (up to 200MB/s) | Improves sensor data writing efficiency and reduces the risk of critical frame loss caused by storage latency |
Durability | 3,000 Program/Erase (P/E) cycles (TLC) | 1,000-3,000 P/E cycles | Adapts to frequent write operations of ADAS systems and extends the reliability of the product’s full life cycle |
Operating Temperature | -20℃ ~ 85℃ | -25℃ ~ 85℃ | Wide-temperature design ensures stable data access in extreme cold start or high-temperature exposure environments |
Power Management | Supports Device Sleep mode | Basic sleep mode | Optimizes energy consumption when the vehicle is stationary and extends battery life |
The chip also supports boot partition and redundant backup partition configuration, ensuring the system can recover quickly after an abnormal power failure. As RAYSON’s official authorized partner, MANDU Technology provides comprehensive technical support for ADAS developers, including chip selection and evaluation, circuit design references, signal integrity testing and free sample support, helping customers shorten the R&D cycle and quickly pass automotive-grade reliability certification.
For R&D teams committed to building high-performance and high-reliability ADAS systems, the RAYSON RS70BT8G4M08G eMMC has become the storage cornerstone for long-term stable system operation with its large capacity, high durability and industrial-grade environmental adaptability.
Its single-chip solution simplifies PCB design complexity, while MANDU Technology’s localized technical service network ensures customers receive full-process support from solution verification to mass production. Choosing RAYSON eMMC means equipping your ADAS system with a trustworthy core for data storage.
About Mandu Technology
Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.
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