AN108 - Differences between FM18L08 and FM28V020

Introduction

The FM28V020, a 256-Kbit parallel F-RAM, is a replacement device for FM18L08; FM18L08 is now obsolete. For most designs, the FM28V020 device can be considered equivalent or better than the FM18L08. The two devices are identical in terms of pinout, package dimensions and composition, and read/write functionality. The FM28V020 also incorporates a page-mode feature that allows read/write operations up to 25 MHz. This application note discusses the key differences between the two devices which need to be considered when migrating from FM18L08 to FM28V020.