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Elpida rolls 'first' 512Mbit DDR2 SDRAM with x32-bit I/O

Posted: 30 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:DDR2 SDRAM? x32-bit I/O? digital consumer application?

512Mbit DDR2 SDRAM

Elpida Memory Inc. has developed what it claimed to be the first 512Mbit DDR2 SDRAM with x32-bit I/O configuration, designed for digital consumer devices such as DTVs, STBs, personal navigation devices, printers, digital still cameras, digital video recorders etc.

In the past a DDR2 controller with x32-bit wide interface required two x16-bit I/O DRAMs. Elpida is now able to offer a 512Mbit DDR2 SDRAM with x32-bit I/O configuration as a one-chip solution. The advantages of this x32-bit solution over a two 256Mbit DDR2 (with x16-bit configuration) include approximately 25 percent memory area reduction on the board; fewer package balls (40 balls); approximately 20 percent less power consumption; and low EMI and better signal quality.

Elpida developed x32-bit I/O DDR2 products to meet the need for small-size consumer electronics that feature 1.8V low-voltage operations and low-power consumption.

"Elpida's new x32-bit DDR2 product realizes a simpler board layout and it can support a four-layer board," said Yoshitaka Kinoshita, executive officer for Elpida's digital consumer division. "Elpida's one chip solution based on the new product is expected to reduce customer's total system costs."

The device was produced using 70nm process technology and features 250- to 1,066Mbit/s (1- to 4.2GBps c per DRAM device) data transfer rate. The SDRAM also offers enhanced 225? on-die termination that reduces power consumption promised reduced overshoot, undershoot noises.

Mass production of the new x32-bit DDR2 SDRAM is scheduled to begin in September.

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