qlc nand

The non-easy slipped speed memory flash has the characteristics of high speed, low cost and large density.Flash memory mainly has nor flash and NAND flash two types, in general, nor type is more suitable for storing program code, NAND type can be used for large-capacity data storage.1, NOR type Flash memoryNOR Flash Technology was first developed by Intel Corporation in 1988, and its appearance revolutioniz

Currently, storage modules are indispensable in the development and design of various embedded systems. Nor and NAND are two major non-loss flash technologies on the market. Nor-flash memory has a small capacity and a low write speed. However, due to its fast random reading speed, it is often used in the storage of program code in embedded systems. The internal structure of nor-flash memory determines that it is not suitable for large-capacity develo

The wiring of NAND Flash is different from that of nor flash and SDRAM. Taking the k9f1208 on the tq2440 Development Board as an example, the wiring method of NAND Flash is analyzed. The k9f1208 structure is as follows: K9f1208 bits are 8 bits in width. Page 1: the last 16 bytes of 512 bytes and 16 bytes are used to store verification codes and other information. Actual data cannot be stored. A block h

I. Pin Introduction Pin name Pin Function CLE Command lock function Ale Address lock function /CE Chip enabling /Re Read enabling /We Write enable /WP Write Protection R/B Ready/busy output signal VCC Power Supply VSS Location N. C Not connected Io0 ~ Io7 Transmit data, commands, and addres

Because Bootloadrer, params, and the kernel, and file systems are all in NAND flash, zoning has to be unified planning. The NAND flash partition of the system relies on both the u-boot and the Linux kernel settings. the NAND partition in the U-bootFile: include/configs/Development Board. H This is the Phy3250 parameter, PHY3250 uses 32MB

We have completed the nand read operation in Linux-general Linux technology-Linux programming and kernel information. The following is a detailed description. Finally, I used the real and virtual address conversion functions, read the written information correctly, and mounted the cramfs partition. Finally, the read part of the nand driver was completed on the last night. Now we can start the file system f

1. Understanding of Types Divided into nor (or non) nand (and non) 2. Interface understanding Nor (or not) ---- separate addresses and Data Bus; Nand (non-) ---- address and Data Bus Sharing. Iii. read/write units: Nor (or not )----Bytes; Nand (and non-) ---- page. Iv. Composition: Nor (or not) ---- sector, byte;

1. Brief DescriptionThe debugging and flash burning functions of jlink are powerful, but it is difficult to perform flash operations on S3C2410 and S3C2440: You need to set SDRAM when burning or flash; otherwise, the speed is very slow; burning and writing NAND flash can only be achieved theoretically, but no one has implemented it directly.In this article, an indirect method is used to burn or write non-NAND