First Fast Cycle RAM with SDRAM interface
16 Feb 2000
Electronics Technology
Avnet Kopp
Fujitsu and Fujitsu Microelectronics Europe (FME) have introduced samples of the company's new 64 Mb fast cycle RAM (FCRAM) with double data rate (DDR) SDRAM interface. Designed for graphics, multimedia and automotive applications, the FCRAM features high speeds and low power consumption.
The 64 Mb FCRAM with DDR interface is the first in a series of application specific memory (ASM) products based on the FCRAM architecture, which was introduced in June 1998 at the VLSI Symposium as Fujitsu's next generation of high-speed memory technology. The new ASMs recently announced feature a 200 MHz clock speed, DLL controlled output, and a 400 Mbit/s/pin data transfer rate. All versions use page mode operation. Random access speeds are claimed to be very high, with the fastest random cycle time measured at 30 ns.
ASM meet multimarket requirements
In recent years, the number of end products that use DRAMs has increased rapidly in market sectors such as computer products (PCs, workstations and servers), consumer products (digital TVs, digital still cameras, video disks and set-top boxes), telecommunications and networking-related products (switches and routers, mobile/cellular phones, PDA and network servers) as well as automotive products. The different applications require higher performance and more diversified memory products, thus segmenting the DRAM market based on applications and performance.
Since conventional commodity DRAMs cannot satisfy the different requirements of those various applications, ASM products are becoming essential, particularly for the rapidly evolving multimedia, networking and graphics systems. In many ways, this trend is similar to the market shift that has impacted logic devices (ASICs).
The first products in Fujitsu's new series reflect the diversity of applications that can be served using the revolutionary FCRAM core tech- nology. FCRAM includes memory array segmentation and internal pipelining that speed random access and reduce power consumption.
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