AN213 - Migrating from FM24C04A to FM24C04B

AN213 discusses the key differences that need to be considered when migrating from FM24C04A to FM24C04B.
FM24C04A is now obsolete and this application note explains how FM24C04B is a replacement for FM24C04A.

Introduction

FM24C04B, a 4-Kbit I2C F-RAM™, is a replacement device for FM24C04A, which is now obsolete. The two devices are identical in terms of pinout, package composition and dimensions, read / write functionality, Write Protect operation, and address pin functionality. This application note discusses the key differences between the two devices that need to be considered when migrating from FM24C04A to FM24C04B.