Classification of flash memory chips

There are also different types of flash memory chips, which can be roughly divided into two categories: NAND and NOR.

NAND flash chips, which are more like hard drives, cost less than NOR. NOR flash memory chips are more like memory. NOR flash memory chips have their own separate data lines and address lines, so they cost more but have less capacity than NAND.

The determining factor of flash memory chip

1. Block capacity. The block capacity of flash memory chip determines the erase function of flash memory chip. If the capacity of a flash chip increases, so does its block capacity. For example, a 4GB flash memory chip has a block capacity of 146KB, and a 1GB flash memory chip has a block capacity of 36KB.

2. Page capacity. The page capacity of the flash memory chip determines the capacity of data transmission once. The larger the page capacity of the flash memory chip is, the better the performance of the flash memory chip is. It can not only improve the capacity of transmission, but also improve the performance of transmission.

3. Number of pages. The larger the page capacity of a flash chip, the longer its addressing time will be.

Detection of flash memory chip

The detection of flash memory chip needs to be carried out by software. Here I recommend a software called my disk test, which can detect flash memory chip by bad block detection and speed detection. If the file is damaged during the bad block detection, the flash memory chip is faulty. By speed detection can test the speed of flash memory chip, so as to judge the model of flash memory chip and true or false.