Feeds

Toshiba boffins claim battery life boost with SRAM tweaks

Standby power consumption reduction of 85 PER CENT in tests

Beginner's guide to SSL certificates

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. ®

Intelligent flash storage arrays

More from The Register

next story
Xperia Z3: Crikey, Sony – ANOTHER flagship phondleslab?
The Fourth Amendment... and it IS better
Microsoft to enter the STRUGGLE of the HUMAN WRIST
It's not just a thumb war, it's total digit war
Tim Cook: The classic iPod HAD to DIE, and this is WHY
Apple, er, couldn’t get the parts for HDD models
Google Glassholes are UNDATEABLE – HP exec
You need an emotional connection, says touchy-feely MD... We can do that
Sporty in all but name: Peugeot 308 e-THP 110
Car of the Year? Arguably. Engine of the Year? Indubitably
Caterham Seven 160 review: The Raspberry Pi of motoring
Back to driving's basics with a joyously legal high
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Internet Security Threat Report 2014
An overview and analysis of the year in global threat activity: identify, analyze, and provide commentary on emerging trends in the dynamic threat landscape.