http://en.wikipedia.org/wiki/Flash_memory Up0TrueDown Mukul Bhatnagar12 年多前 TI__Guru*81455points You will find the following article by my colleagues useful too http://www.eetimes.com/design/memory-design/4216897/Software-and-hardware-challenges-due-to-the-dynamic-raw-NAND-market ...
To update rootfs - boot from micro SD card otherwise a mounted flash partition will be rewritten, get corrupt and the camera might not boot - to recover, boot from micro SD card and reflash rootfs partition. boot.bin,u-boot-dtb.img- most likely won't need updating at all. Only if the...
NOR flash memory wiring and structure on silicon(from Wiki) Cross-seciton along BL E2PROM的Array区沿BL方向的截面和NOR Flash的几乎一模一样,每两根WL就有一根BL Contact下来,而且WL中间还有接地的N+区域。可是Wiki上没有给出沿WL方向的截面,网上也都没有,所以我根据反向的图画了一个。 Cross-section along...
NAND flash的单元尺寸几乎是NOR器件的一半, 由于生产过程更为简单, NAND结构可以在给定的模具尺寸内提供更高的容量, 也就相应地降低了价格。 NOR flash占据了容量为1～16MB闪存市场的大部分, 而NAND flash只是用在8～128MB的产品当中, 这也说明NOR主要应用在代码存储介质中, NAND适合于数据存储, NAND在CompactFla...
Referhttp://en.wikipedia.org/wiki/NAND_flash Bad blocks can be generated in Nand Flash at the time of flash manufacturing or during write cycles. Once a block became bad, filesystem will mark it as bad in BBT and ignore that block forever from reading/writing cycles, so that the applic...
WinCE NAND flash - FAL From ESSLabWiki 1.Introduction Flash與一般常見的Disk不同,其特性是無法重複對同一塊記憶體位置去做Write的動作,必須要Erase那塊記憶體位置才可以做Write的動作。因此一般的File System,如FAT16、FAT32、NFTS…,無法直接在Flash Memory上使用;若是想要沿用這些File System,則必須透過一層Tr...
[ 0.000000] Virtual kernel memory layout:[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 ...
AM1808同时使用MMC和Nand Flash吗? Other Parts Discussed in Thread:AM1808 在wiki网上编译Linux内核时,有以下提示: WARNING Please disable MMC support when NAND has to be used. They are pin multiplexed and NAND will not work when MMC is enabled....
It has, however, been proposed to implement ECC in flash memory as the smaller fabrication process has shrunk to the width of about 150 helium atoms (.14 nm, or 22 nm total). The next level up from a page is a block which is a collection of 128 pages (1 MiB). A block can be...
From ESSLabWiki 1.Introduction Flash與一般常見的Disk不同,其特性是無法重複對同一塊記憶體位置去做Write的動作,必須要Erase那塊記憶體位置才可以做Write的動作。因此一般的File System,如FAT16、FAT32、NFTS…,無法直接在Flash Memory上使用;若是想要沿用這些File System,則必須透過一層Translation Layer來將Logical...