Inside mobile devices such as smart phones and tablet computers,there is a chip that silently undertakes the heavy responsibility of data storage,which is eMMC chip.As the abbreviation of embedded MultiMediaCard,eMMC is an extension of MMC flash card standard,which is specially designed to meet the comprehensive requirements of equipment for high performance,low cost,small size and ease of use.
First,What is the eMMC embedded flash memory chip
EMMC chip is an embedded storage scheme that encapsulates NAND flash memory particles and main control chip.It is usually welded on the motherboard of the equipment to store the operating system,applications,pictures and user data.Compared with the traditional storage scheme that requires additional design of control circuit,eMMC chip"embeds"the complicated flash memory management,which greatly simplifies the design difficulty of the whole machine and shortens the product development and marketing cycle.
Second,the working principle of eMMC chip
The eMMC chip consists of two parts:flash memory particles and controller.The controller is responsible for translating and executing the MMC standard protocol instructions sent by the host,and at the same time undertakes the underlying tasks such as bad block management,wear leveling and error correction coding,so that the main processor does not need to directly interfere with the reading and writing details of the flash memory.Because the pin definition is different from SD card and SIM card,it is necessary to adapt the hardware according to the specific chip specifications in practical application,which is also the key link to ensure the stability of data communication.
Third,the characteristics of eMMC chip
- High integration:the controller and flash memory are packaged in one,which reduces the design threshold and speeds up the product landing;
- Unified interface:following MMC standard interface,it can flexibly match various NAND and MMC storage devices;
- Rich capacity:the mainstream capacity covers 2GB to 256GB,meeting the storage needs of different levels of equipment;
- Efficient transmission:with the continuous acceleration of version iteration,the reading and writing speed can reach more than 400MB/s under high-end specifications.
RAMSUN is deeply involved in the field of memory IC design,acting as an agent for several flash memory chip brands,and has mature experience in R&D and sales of high-end memory chips.Long-term focus on high-precision storage track,focusing on providing stable,low-power and high-performance overall storage solutions for all kinds of key core systems.With strict quality control and stable performance,the products are widely adapted to harsh application scenarios in many fields such as industry,medical care,network and intelligent equipment.If you need flash storage,please contact RAMSUN.
Keywords:eMMC
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