This document points out the differences the FM18L08 and FM28V020 parallel F-RAM devices. 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. In terms of speed, the FM28V020 has faster access timing and cycle timing. The FM28V020 also incorporates a page-mode feature that allows read/write operations up to 33MHz.
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