AN322 - Migrating from Grade 1 version of FM25L04 to Grade 1 version of FM25L04B

AN322 discusses the key differences that need to be considered when migrating from Grade 1 version of FM25L04 to Grade 1 version of FM25L04B. FM25L04 is now obsolete and this application note explains how FM25L04B is a replacement for FM25L04.

Introduction

FM25L04B-GA, a 4-Kbit SPI Grade 1 F-RAM™, is a replacement device for FM25L04-GA, which is now obsolete. The two devices are identical in terms of package, pinout, DC / AC parameters, and read / write functionality. This application note discusses the key differences between the two devices that need to be considered when migrating from FM25L04-GA to FM25L04B-GA.