AN308a - Migrating From FM25L256B To FM25V02A Or FM25W256

AN308a discusses the key differences between FM25L256B, FM25V02A, and FM25W256 that need to be considered during migration from FM25L256B. FM25L256B is now obsolete and this application note explains how FM25V02A or FM25W256 is a replacement for FM25L256B.

Introduction

FM25V02A and FM25W256 are the potential replacement devices for FM25L256B which is obsolete. For most designs, the FM25V02A or FM25W256 devices can be considered equivalent or better than the FM25L256B. The three devices are identical in terms of pinout, package composition and dimensions, and read/write functionality. This application note points out the differences between the FM25L256B, FM25V02A, and FM25W256 F-RAM devices.