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

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Backing up Big Data
Solving backup challenges and “protect everything from everywhere,” as we move into the era of big data management and the adoption of BYOD.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?