Comparison between CS SD NAND and Raw NAND

Previously, we have a detailed introduction about what CS SD NAND is:

https://www.longsto.com/product/68-en.html

What’s the difference between CS SD NAND and the normal NAND Flash (Raw NAND)?

Below is a comparison list:

From above list, we know the main differences between CS SD NAND and Raw NAND are:

1. Driver free. SD NAND has the built-in flash controller which can manage bad block, Wear-Leveling Algorithm, dynamic and static EDC/ECC algorithms.

a) Make the product quality more stable and the service life longer.

b) Reduce the CPU load. The CPU cannot need to manage the related NAND Flash operations.

C) Save the programmer time and company costs. 

One of the customers who spent three months writing their own NAND Flash drivers, but they finally gave up. You can imagine how much is the staffs cost for three-month!

d) Speed up the development of products.

Using the SD NAND, R&D staffs can focus on the realization of product functions, instead of wasting time to writing driver program.

2. More stable performance.

NAND Flash is a write after erase mechanism, if the software can not properly handle, data loss when a sudden power failure. But the internal garbage collection mechanism of SD NAND can avoid this problem very well. Therefore, CS SD NAND II can pass the 10K random power off test.

3. Smaller size.

Raw NAND is 12 * 20mm and 48 pins. The SD NAND is 6 * 8mm and 8 pins. Compared with the Raw NAND, the SD NAND can be used to make smaller and more compact products. and it also can save CPU GPIO ports (this is more important for MCU).

4. SD NAND has more capacity options. The main capacity is 128MB/512MB/4GB/8GB. But for SLC's Raw NAND, the main capacity is 128MB. 512MB is rare, and the leading time for 512MB is also very long. A single 4GB Raw NAND is basically MLC or TLC NAND flash, which is more complex to manage.

5. R/W speed is more faster.

If you have any questions, please contact us

Email：line@longsto.com