ARM announces two new Cortex-R series processors for real-time applications
February 01, 2011 // Phil Ling
Architectural enhancements are driven by software developers' needs, as the two additional cores to the R series add greater support for dual-core configurations and target applications that demand high performance with real-time response. It boosts the number of cores in the R series to three, sitting alongside the company's complementary Cortex-M and Cortex-A series.
Delivering sustainable real-time performance using ever-faster processors, while ensuring binary compatibility across a growing number of platforms, presents significant architectural challenges.
ARM believes its Cortex family, which encompasses the A series (for Applications), the M series (for Microcontroller) and the sometimes overlooked R series (for Real Time) delivers the binary compatibility, but it is the R series that addresses the demands of applications that require high performance with real time response.
The first and, until now, only Cortex-R processor, the R4, has been in the market since 2006 and although its profile isn't as high as the Cortex-M and Cortex-A series, ARM maintains it is prevalent in mobile applications as well as disk drive technology, while Texas Instruments uses an R4 core in one of its high-end microcontroller devices. In fact, ARM claims that in many ways the Cortex-M4 is almost identical to the Cortex-R4, although the R4 offers up to twice the raw 'binary' performance.
More importantly, ARM's research shows that the R4's use in these applications is often in a dual-core configuration, forcing the licensee to implement cache coherency and multicore support, two of the main enhancements ARM has added to the latest Cortex-R cores, the R5 and the R7.
While the R5 offers about the same processing power as the R4, it is these architectural enhancements to support the core that deliver the benefits, in the form of simpler firmware development. This, in turn, frees up processor cycles that can be 'spent' elsewhere.
ARM stated that the majority of its core developments are now driven by the needs of software engineers, which now outnumber hardware engineers. While the Cortex-M series cores are 'naturally' real-time, the demands of the applications targeted by the R series demand more sophisticated features to maintain the real-time performance; the M4 is designed to run at around 150MHz, while the R7 can run at up to 1GHz.
The R7 adds all the architectural features of the R5 and pushes their performance even higher, according to ARM. In addition to the dual-core support, both the R5 and R7 will be available in single- and dual-core versions using the company's existing MPCore technology, which has been re-implemented for the R series.
Astute launches Electromech division with key franchises
November 28, 2014
Astute Electronics, a supplier of electronic components and value added services, has launched a franchised electromechanical ...
The potential pot of gold in mobile marketing
electrolyte promises cheaper magnesium-sulfur batteries
Korea, France join forces on driverless cars R&D
Proton-conducting graphene membranes enhances fuel cell performance
Catcher drones to geo-fence industrial sites
November 27, 2014
Once more last October, drones were making the headlines in France, with unidentified units reportedly flying over the country's ...
Industry embraces 48V supply in the aim of bringing down emissions
ST, InvenSense X-Fab amongst MEMS award winners
Chip market for wireless sensor networks on 23% CAGR
- Common Mode Rejection in Wide Input Range Op Amps
- Power Systems Design eBook
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
InterviewCEO interview: Vicor powers after higher volume applications
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ever since. At Electronica he told EE Times Europe that his company is investing ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.