UM1653 datasheet(6/45 Pages) STMICROELECTRONICS

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STM32 NAND driver blocks

UM1653

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STM32 NAND driver blocks

This document describes how to connect a NAND Flash device to an STM32 family

microcontroller and communicate using FSMC. NAND driver library for STM32 is a generic

library where STM32 can access NAND with some advanced features like garbage

collection, wear leveling, bad block management, ECC checking etc. The library supports

both FAT file system and USB MSC device.

Figure 1. Application architecture

1.1

STM32 USB peripheral

The STM32F embeds a USB peripheral that supports USB full-speed and high speed.

The development of Endpoint and support suspend / resume are configured by software.

The USB device provides a connection between the host and the function implemented by

the microcontroller.

Data transfer between the host and the memory system is through a dedicated packet buffer

memory accessed directly from the USB device. The size of buffer memory is dependent on

the number of endpoints used and the maximum packet size. This dedicated memory is 512

bytes.

LLD: Low level driver

ECC: Error correction code

BBM: Bad block management

MS33215V1

STM32 Lib

Flash translation layer

Hardware Adaption Layer

NAND Flash Device

FTL Interface

Garbage collection

Wear Leveling

LLD

ECC

BBM

File System

UM1653 Datasheet(PDF) 6 Page - STMicroelectronics