Fast Cycle DRAM (FCRAM) is a type of

synchronous dynamic random-access memory Synchronous dynamic random-access memory (synchronous dynamic RAM or SDRAM) is any DRAM where the operation of its external pin interface is coordinated by an externally supplied clock signal. DRAM integrated circuits (ICs) produced from the ...

developed by Fujitsu and

Toshiba is a Japanese multinational electronics company headquartered in Minato, Tokyo. Its diversified products and services include power, industrial and social infrastructure systems, elevators and escalators, electronic components, semiconductors ...

. FCRAM has a shorter data access latency compared to contemporary commodity SDRAMs; and is used in where the lower data access latency is more desirable than low cost and high capacity (FCRAM is a moderate cost and capacity speciality DRAM). FCRAM achieves its low latency by dividing each row into multiple sub-rows, of which only one is activated during a row-activation operation. This had the effect of reducing the effective array size, improving the access time. FCRAM has a

DDR SDRAM Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM) is a double data rate (DDR) synchronous dynamic random-access memory (SDRAM) class of memory integrated circuits used in computers. DDR SDRAM, also retroactively called DDR ...

-like command set to enable memory controllers that support both DDR SDRAM and FCRAM. It also has a standard

dual in-line memory module A DIMM (Dual In-line Memory Module) is a popular type of memory module used in computers. It is a printed circuit board with one or both sides (front and back) holding DRAM integrated circuit, chips and Pin (electronics), pins. The vast majority ...

(DIMM).

References

* Jacob, Bruce et al. (2008). ''Memory Systems: Cache, DRAM, Disk''.

Morgan Kaufmann Publishers Morgan Kaufmann Publishers is a Burlington, Massachusetts (San Francisco, California until 2008) based publisher specializing in computer science and engineering content. Since 1984, Morgan Kaufmann has been publishing contents on information te ...

. pp. 494–495. SDRAM {{comp-hardware-stub