Rayson Memory Products

Selecting the right DDR memory capacity requires careful analysis of your system requirements. First, check your processor's maximum supported memory capacity in the datasheet. Then, evaluate your operating system's minimum requirements - embedded Linux typically needs 512MB-1GB minimum, while Android requires 2GB+. Next, assess your application's memory footprint including buffer sizes, cache requirements, and concurrent processes. Finally, add 20-30% headroom for future software updates and feature additions. For industrial applications, consider the long product lifecycle and plan for increased memory needs over 5-10 years.

Contact our FAE team with your processor model and application details for personalized capacity recommendations.

DDR5 is significant advancement over DDR4 across multiple dimensions. Bandwidth increases by 50%+ with DDR5 starting at 4800MT/s compared to DDR4's maximum 3200MT/s. Power efficiency improves with DDR5's 1.1V operating voltage versus DDR4's 1.2V, delivering approximately 20% power savings. DDR5 doubles the single-chip capacity supporting 16-64Gb devices compared to DDR4's 4-16Gb range. New features include on-die ECC (ODECC) for improved data reliability, dual 32-bit channels for better access efficiency, and integrated PMIC for optimized power distribution. However, DDR5 requires new processor platforms and more complex power design with integrated PMIC management.

Choose DDR5 for new designs requiring maximum performance and efficiency. Select DDR4 for legacy system maintenance or cost-sensitive applications with mature supply chains.

SLC (Single-Level Cell) NAND stores 1 bit per cell, offering the longest endurance at 100,000 program/erase cycles, fastest performance, and highest reliability, but at premium pricing. MLC (Multi-Level Cell) stores 2 bits per cell, providing 10,000 cycle endurance with moderate cost, making it suitable for industrial applications. TLC (Triple-Level Cell) stores 3 bits per cell with 3,000 cycle endurance at the lowest cost, ideal for consumer electronics. For industrial and automotive applications requiring high reliability, SLC or industrial-grade MLC is recommended. Consumer devices with less demanding write requirements can utilize TLC for cost optimization. The choice depends on your application's write frequency, data criticality, and budget constraints.

Select SLC for mission-critical applications, MLC for industrial use, and TLC for consumer electronics. Contact us for application-specific recommendations.

eMMC (embedded MultiMediaCard) integrates NAND Flash with a managed controller in a single package, providing a standard MMC interface that simplifies system design significantly. The internal controller handles complex NAND management tasks including bad block management, ECC correction, wear leveling, and garbage collection. This allows developers to focus on application software rather than low-level NAND management. Raw NAND Flash requires an external controller to handle these functions, offering more flexibility for custom implementations and potentially lower cost for very high volumes. eMMC accelerates time-to-market and reduces development risk, while raw NAND suits applications requiring custom controller optimization or extremely cost-sensitive high-volume production.

Choose eMMC for faster development and simplified design. Select raw NAND with custom controller for maximum optimization in high-volume applications.