Elpida Memory's New 1 Gigabit DDR2 SDRAMs

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Elpida Memory, Inc. has announced the availability of its second-generation 1 Gigabit DDR2 SDRAMs and six memory modules based on the new devices. The new devices are built using Elpida's state-of-the-art 90 nm process technology, and they complement Elpida's full line-up of DDR2 devices that are currently in high-volume production. The x16 devices provide a wider data path for digital consumer applications, and the FBGA packages enable thinner memory module designs. Dual In-line Memory Modules (DIMMs) based on the new devices include Registered and Fully-Buffered DIMMs (FB-DIMMs) for servers, as well as high-density Small Outline DIMMs (SO-DIMMs) for notebook PCs and Unbuffered DIMMs (UDIMMs) for desktop PCs.

The 1 Gigabit DDR2 SDRAM devices are available in four different data rate speeds: 800 Mega bits per second (Mbps), 667 Mbps, 533 Mbps or 400 Mbps. They are organized as either 32 M words x 4 bits x 8 banks, 16 M words x 8 bits x 8 banks, or as 8 M words x 16 bits x 8 banks. The high speed data transfer rate is achieved by its 4-bit prefetch, pipelined architecture. The supply voltage (VDD) is 1.8V +/- 0.1V, and the operating temperature range (Tc) is 0-95 deg C. The devices are available in 68-ball or 92-ball FBGA packages for easy mounting on DIMMs.

Elpida's new 1 Gigabit devices in stacked FBGA (sFBGA) packages enable thinner module design which is critical for notebook PCs and blade servers that require high-density memory. Elpida will offer six DIMMs based on the new 1 Gigabit devices:

-- 4 Gigabyte RDIMM for servers with data transfer rate options of 5.3, 4.2 or 3.2 Gigabits per second (Gbps) (PC2-5300/4200/3200), and organized as 512 M words x 72 bits x 2 Ranks;

-- 2 Gigabyte RDIMM for servers, with data transfer rate options of PC2-5300/4200/3200, and organized as 256 M words x 72 bits x 1 Rank;

-- 4 Gigabyte Fully Buffered-DIMM for servers; with data transfer rate options of PC2-5300F/4200F, and organized as 512 M words x 72 bits x 2 Ranks;

-- 2 Gigabyte SO-DIMM for notebook PCs, with data transfer rate options of PC2-5300/4200, and organized as 256 M words x 64 bits x 2 Ranks;

-- 2 Gigabyte UDIMM (non-ECC); with data transfer rate options of PC2-6400/5300/4200, and organized as 256M words x 64 bits x 2 Ranks;

-- 2 Gigabyte UDIMM (ECC); with data transfer rate options of PC2-6400/5300/4200, and organized as 256M words x 72 bits x 2 Ranks.

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