[大容量nandflash]求助SPI NAND，我应该选什么驱动好。

发布于 2019-05-09 11:19:20 浏览：2505 订阅该版

目前rt thread关于嵌入式flash这块支持比较多，“FAL”，“SFUD”。最近选型用了个东芝的4Gbit的SPI NAND,网上demo资料比较少，有点手足无措，三星的K9F2G08U0M并行总线的rtthread有uffs文件系统的demo。
但对于这个大容量的SPI NAND，我该选取什么驱动架构比较好，Easyflash or 文件系统，有没有大神指引方向，少走点弯路。
目前我想用EasyFlash，写个ef_tc58_port.c?大容量目的还是提供日志功能，Gbit以上能记录半个月的持续日志，但选easyflash会不会对SPI Nand的移植不友好，坏块问题？
文件系统的话，恩，好像没有参考的spi方式的nandflash.c

```1. Introduction
1.1. General Description
The TC58CVG2S0HxAIx is a serial interface NAND Flash for embedded applications which supports the SPI
interface.
The TC58CVG2S0HxAIx is organized as (4096 + 128) bytes × 64 pages × 2048 blocks. The device has a 4224
byte data buffer which allows program and read data to be transferred between the buffer and the memory cell
array in 4224-byte increments. The Erase Operation is implemented in a single block unit (256 Kbytes + 8 Kbytes:
4224 bytes × 64 pages). The device has the high speed mode for sequential Page Read Operation. When high
speed mode is enabled, the average of tR is shortened.
The TC58CVG2S0HxAIx has ECC logic on the chip and 8bit read errors for each (512 bytes + 16 bytes) can be
corrected. The internal ECC logic has detailed bit flip count report.
1.2. Definitions and Abbreviations
SPI
Serial Peripheral Interface.
Address
The address is comprised of a column address (CA) with 13bits and a row address (RA) with 17bits. The row
address identifies the page and block to be accessed. The column address identifies the byte within a page to access.
Column
The byte location within the page.
Row
Refer to the block and page to be accessed.
Sector
The 512 bytes unit in a page.
Page
The smallest addressable unit for the Read and the Program operations.
Block
Consists of multiple pages and is the smallest addressable unit for the Erase Operation.
Data Buffer
Buffer used to transfer data to and from the cell array.
Cell Array
Memory cell of NAND flash
Device
The packaged NAND unit.```

下载附件 [TC58CVG2S0HxAIx_Rev1.1_2016-11-08.pdf](https://oss-club.rt-thread.org/uploads/201905/09/103354uny8rz2irpytrtit.attach)