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Samsung licenses National's power management system

Posted: 23 Jun 2006 ?? ?Print Version ?Bookmark and Share

Keywords:power management? license? Samsung? National Semiconductor? PowerWise?

Samsung Electronics Co. Ltd has licensed a power management function block from National Semiconductor Corp., part of the PowerWise system of power management, according to National and ARM Holdings plc. Samsung is expected to integrate the technology into ICs designed for mobile phones.

PowerWise is a system that connects peripherals and processors to software for on-chip power management developed by National and ARM.

Samsung's move to license the technology is unsurprising as Samsung collaborated with National Semiconductor Corp. and ARM, and other adopters such as Matsushita Electric Industrial, Philips Semiconductor, and STMicroelectronics on the interface specification.

Samsung has specifically licensed a synthesizable functional block called the APC2 IP pack" target=_blank>Advanced Power Controller (APC). The APC has been designed to be compliant with the AMBA on-chip bus and includes a performance monitor that allows the APC block to automatically minimize the voltage supply and performance based upon real-time, on-chip system conditions. Dropping the voltage and clock frequency can be used to perform calculations more slowly but at much reduced power consumption.

ARM's contribution, the Intelligent Energy Manager (IEM) software, can further reduce power and energy consumption demands upon the battery by as much as 25 percent to 30 percent, the company said. ARM did not say whether Samsung was licensing the IEM software from ARM for use with the APC or whether Samsung would write its own software.

There are currently three IEM technology-enabled processors: the ARM1176JF-S processor, the ARM1176JZF-S processor, and the ARM11 MPCore multiprocessor. The technology is also available for the Cortex family of processors.

- Peter Clarke
EE Times

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