Feeds

Elpida preps low-amp DDR SDRAM for portables

Super Self-refresh

  • alert
  • submit to reddit

Elpida has begun sampling 256Mb DDR SDRAM chips with a technology claimed to yield significant battery life benefits for notebooks and other portable devices.

The technology, dubbed Super Self-refresh (SSR), adjusts the standard on-board self-refresh system according to the chip's operating temperature. At lower temperatures, only a smaller current is required to refresh the memory cells, ranging from 40µA at 25°C to 150µA at 70°C and 250µA at 85°C, Elpida said.

The upshot is that SSR-equipped SDRAM chips use a self-refresh current 95 per cent lower than that of regular SDRAM devices. In turn, this "enables a drastic change in scale for battery backup requirements", Jun Kitano, director of technical marketing for Elpida Memory (USA) said in a statement.

The 256Mb SSR samples are fabbed using Elpida's 110nm process and support clock frequencies of up to 400MHz in a variety of CAS latencies and burst lengths. Elpida said it would also offer a 512Mb version built using two 256Mb parts in the company's double-density package.

The chips go into volume production in March, selling for $17 (400MHz) or $14 (333MHz and 266MHz). ®

Related stories

Samsung samples 512Mb GDDR 3 part
Elpida offers 800MHz 1Gb DDR 2 chip
Elpida IPO raises $967m
Samsung targets DDR 2 with 90nm process

Whitepapers

Designing a defence for mobile apps
In this whitepaper learn the various considerations for defending mobile applications; from the mobile application architecture itself to the myriad testing technologies needed to properly assess mobile applications risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.