Overview
Fast Cycle RAM (FCRAM) is a DRAM technology with a specialized memory core technology that achieves faster random access times and offers lower power consumption than traditional DRAMs. FCRAM is a trademark of Fujitsu Ltd., Japan. As faster applications emerge in the networking and communications markets, there is a need for higher performance memories to meet the architectural requirements of these emerging applications. FCRAM memory technology addresses the needs of some of these emerging applications. For applications that require DRAM densities with random cycle performance approaching SRAM speeds, FCRAM provides a cost effective solution.
Lattice's FCRAM I controller core provides a simple and flexible solution to interfacing different FCRAM I memories to user application logic. On the memory side, the FCRAM I controller core interfaces to FCRAM I data bus widths with (configurable) 8 or 16 bit DDR memory interfaces. On the user side the core provides a simple command interface that accepts read, write, and refresh commands. The core interfaces to 256 Mbit FCRAM I devices (speed grades -60/CAS latency 3 and 4 and -55/CAS latency 3).
Learn more about DDR IP core
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