AN326 - Migrating from Grade 1 version of FM25CL64 to Grade 1 version of FM25CL64B

AN326 discusses the key differences that need to be considered when migrating from Grade 1 version of FM25CL64 to Grade 1 version of FM25CL64B. FM25CL64 is now obsolete and this application note explains how FM25CL64B is a replacement for FM25CL64.

Introduction

FM25CL64B-GA, a 64-Kbit SPI Grade 1 F-RAM™, is a replacement device for FM25CL64-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 FM25CL64-GA to FM25CL64B-GA.