What is the difference between emmC5 1 and UFS2 0 What are the advantages of UFS2 0 over eMMC5 1

There are three parts to your question: first, the structure of UFS and eMMC; Second, the process of nandflash; 3. The impact of the combination of the two on consumers First, the structure of EMMC is as follows From the figure, it can be seen that it is a controller + nandflash chip to form a new memory to provide storage for various consumer electronics. Second, the process of Nandflash Nandflash has SLC, MLC, TLC and other processes, specifically:

1. SLC: Single-levelcell single-layer unit, SLC is characterized by high cost, small capacity and fast speed, while MLC is characterized by large capacity and low cost, but slow speed. The advantage of SLC flash memory is that it can be rewritten up to 100,000 times, which is 10 times higher than MLC flash memory.

2. MLC: Each unit of the Multi-LevelCell multi-layer unit stores two bits, while the traditional SLC can only store one bit. MLC technology has significant density advantages, however, it is slightly less fast or reliable than SLC (Table 3).

As a result, SLC is used in most ** card and wireless applications, while MLC devices are typically used in consumer electronics and other low-cost products. 3. TLC: triplelevelcell, that is, a three-layer unit.

With the same wafer volume, the storage capacity can be increased several times, but ** has hardly changed, but the erase life has become 1 20 of MLC, about 500-1000 times erase life. 3. The impact of the combination of the two on consumers Let's take a look at the composition of a manufacturer's chip: It is composed of 8 pieces of 64Gbit 15nm process Nandflash, but it is not specified whether it is MLC or TLC, it is certain that it will not be SLC, and the cost is too high.

Let's look at the composition of the chip: It is composed of 2 128GB 15nm process Nandflash, and it is not specifically MLC or TLC. Conclusion:

In today's skyrocketing demand for storage in consumer electronics, consumers don't really need to care about MLC or TLC, although they have ** and performance differences before, you just spend money to buy the products you think are worth it. The details of the technology are all checked by various control chip manufacturers to help consumers. Leave professional things to professional people to do.

What does it mean to be a mobile phone? Which is better?

In terms of appearance and function, UFS and eMMC are not significantly different, they are neither an interface (not a concept with the SATA interface of the PC), nor a simple memory chip (not a concept with NAND flash memory), it can be said that UFS eMMC is a standard specification of embedded memory (based on the flash memory medium on the basis of the integrated master chip, and has a standard interface).

eMMC full name is embedded multi media card, Chinese translated as "embedded multi ** memory card", using parallel data transmission technology, between the main control and the storage unit has 8 data channels, they can work synchronously, the working mode is half-duplex, each channel allows read and write transmission, but at the same time can only read and write.

UFS full name is Universal Flash Storage, Chinese translated as "universal flash storage", using serial data transmission technology, only two data channels but the rate exceeds EMMC, the working mode is full-duplex mode, the same channel allows read and write transmission, and read and write can be carried out at the same time, and the transmission efficiency is improved. Whether it is data transmission technology or working mode, UFS is ahead of EMMC in all aspects.

Judging from the above data, the read speed is twice that of eMMC, which is not felt for ordinary applications. Under what circumstances is there a difference? When you use your mobile phone as a large file storage medium (such as a USB flash drive) for large file storage, you can have a clear feeling.

EMMC and UFS are both forms of interface for memory chips, such as the hard disk of a computer, which used to be an IDE interface, and is now a SATA interface. Generally speaking, ordinary consumers don't need to care about what these two interfaces are and how to use them, which is what professional manufacturers need to consider. Consumers can just hold on to their pockets.

Combined**, there are the following similarities and differences:

1. Structure: Same: EMMC and UFS are both communication interfaces, and the final medium of storage is NAND flash particles.

Second, speed. Different: The external communication speed is different, as can be seen from the comparison**, in the commonly used "read" parameter, UFS is about twice the speed of EMMC.

It is an internal version of the interface, which is mainly reflected in the speed. Similarly, because it is not commercialized, it is not taken out for comparison.

3. Use. Summary: EMMC and UFS are memory coins for two different interfaces, and are the build codes for these interfaces.

The memory of the mobile phone is currently used with a thousand-yuan machine, and the UFC is generally used on 1500 to 2000 mobile phones, and the latest and best are used on flagship mobile phones, except for Huawei mobile phones, of course.

From this point of view, the data flow in WeChat is determined by the WeChat server. Therefore, although the speed difference between eMMC and UFS is large, it is much faster than mobile networks and is limited to other channels as long as other communication channels are involved.