Feeds

Toshiba boffins claim battery life boost with SRAM tweaks

Standby power consumption reduction of 85 PER CENT in tests

The Power of One Brief: Top reasons to choose HP BladeSystem

Japanese electronics giant Toshiba claims to have found a technology solution to the perennial problem of mobile device battery life, offering a reduction in standby power consumption of up to 85 per cent.

Announced at the 2013 International Solid-State Circuit Conference in San Francisco last week, the innovation in embedded static random access memory (SRAM) can reduce active and standby power consumption in conditions ranging from room temp to high temperature, the firm said.

Toshiba explained the following:

Longer battery life requires lower power consumption in both high performance and low performance modes (MP3 decoding, background processing, etc). As low performance applications require only tens of MHz operation, SRAM temperature remains around RT [room temperature], where active and leakage power consumptions are comparable. Given this, the key issue is to reduce active and standby power from HT [high temperature] to RT.

The key to reducing power consumption lies in Toshiba’s use of a bit line power calculator (BLPC) and a digitally controllable retention circuit (DCRC).

The BLPC helps to predict how much power the system will need by using replicated bit lines to monitor the frequency of the ring oscillator, and minimises the active power of SRAM “in certain conditions”, said the firm.

The DCRC, meanwhile, is able to take a big chunk out of standby power consumption by waking up from time to time to update the buffer size of the retention driver.

The techniques have enabled power consumption at 25C to be reduced by 27 per cent (active) and 85 per cent (standby) in prototype tests.

Toshiba said the low-power tech would be perfectly suited for smartphones and other mobile devices, but gave no indication when it would be available commercially. ®

Using blade systems to cut costs and sharpen efficiencies

More from The Register

next story
Report: American tech firms charge Britons a thumping nationality tax
Without representation, too. Time for a Boston (Lincs) Macbook Party?
iPad? More like iFAD: We reveal why Apple ran off to IBM
But never fear fanbois, you're still lapping up iPhones, Macs
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
Child diagnosed as allergic to iPad
Apple's fondleslab is the tablet dermatitis sufferers won't want to take
Microsoft takes on Chromebook with low-cost Windows laptops
Redmond's chief salesman: We're taking 'hard' decisions
For Lenovo US, 8-inch Windows tablets are DEAD – long live 8-inch Windows tablets
Reports it's killing off smaller slabs are greatly exaggerated
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
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.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.