Flash Guide

Flash memory is a class of memory that can retain its contents even after the power has been switched off.

Introduction

Unlike ROM, the data in Flash memory can be changed by an application.

Features of Flash memory are:

Writing and erasing of memory has to be undertaken in blocks of memory
Memory contents are retained until erased (regardless of whether the power has been turned on/off).

The following are limitations of FLASH memory:

There are a finite number of erase-write cycles (usually 100,000).
NAND Flash cannot be executed in place. Instead the contents have to be loaded into RAM and then executed.

Parent topic: Demand Paging Guides