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Send til en ven   Udskriv23/2 2010 kl. 12:53
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ARM lancerer Cortex-M4 processoren

ARM's ny Cortex-M4 processorer sigter mod applikationer indenfor motorkontrol. automotive, power management, embedded audio og industrial automation (in english). 

ARM has announced the launch of the innovative Cortex-M4 processor to provide a highly efficient solution for digital signal control (DSC) applications, while maintaining the industry leading capabilities of the ARM Cortex-M family of processors for advanced microcontroller (MCU) applications.

The combination of high-efficiency signal processing functionality with low-power, low cost and ease-of-use benefits of the Cortex-M family processors is designed to satisfy the emerging category of flexible solutions specifically targeting the motor control, automotive, power management, embedded audio and industrial automation markets.

The Cortex-M4 processor features a single-cycle multiply-accumulate (MAC)unit, optimized single instruction multiple data (SIMD) instructions, saturating arithmetic instructions and an optional single precision Floating-Point Unit (FPU). These digital signal control features build upon the innovative technology that characterizes the ARM Cortex-M family of processors.

These features include a 32-bit core capable of 1.25DMIPS/MHz for high performance, Thumb-2 instructions for optimum code density and a Nested Vector Interrupt Controller for outstanding interrupt handling. In addition, the processor features an optional Memory Protection Unit (MPU), low cost debug/trace and integrated sleep states for increased flexibility.  Embedded developers will be able to rapidly design and deliver compelling end-products with maximum functionality and the absolute minimum power and area footprint.

- The signal processing requirements of the embedded market are moving from dedicated processors toward hybrid microcontrollers.  These products are capable of delivering outstanding digital signal control while providing the flexibility to efficiently perform other processing operations, says Will Strauss, president of Forward Concepts, the premier market research firm tracking markets based on digital signal processing (DSP) technology.
- The ARM partnership will capitalize on this shift with the introduction of the Cortex-M4 processor which has all of the capabilities for optimum digital signal control operations combined with the proven low power performance of the Cortex-M family processors.

The Cortex-M4 processor is supported by the ARM physical IP portfolio offering the widest foundry and technology support for physical implementations. This includes the Cortex-M Low Power Optimization Package for the TSMC CE018FG (180nm ULL) process for Partners targeting ultra low-power implementations.

For Partners targeting high-performance MCU class devices, ARM also provides physical IP solutions on leading foundry processes. For a target frequency of 150MHz for next generation MCU devices, ARM physical IP for the 65nm GLOBALFOUNDRIES 65LPe process enables a standard implementation of the Cortex-M4 processor within just 65K gates and a dynamic power consumption of less than 40µW/MHz. The FPU, if included, adds only 25K gates and enables an extremely powerful implementation within an industry leading area footprint.

Sophisticated development tool support for the Cortex-M4 processor is provided by the Keil MDK-ARM (Microcontroller Development Kit) which includes the industry-standard ARM compiler extended for SIMD and FPU. MDK-ARM also contains µVision4 with complete Cortex-M4 processor instruction simulation as well as target debugging with advanced trace capabilities.

In addition, the processor is supported with development tools, debuggers and RTOS from members of the ARM Connected Community, the industry’s largest ecosystem of companies aligned to provide a complete solution, from design to manufacture, for products based on the ARM architecture (see below for details).

Cortex Microcontroller Software Interface Standard


The Cortex-M4 processor is fully supported by the Cortex Microcontroller Software Interface Standard (CMSIS) the vendor-independent hardware abstraction layer for the Cortex-M processor series that enables consistent and simple software interfaces to the processor for peripherals and real-time operating systems.

ARM is currently expanding the CMSIS to include C Compiler support for Cortex-M4 processor extended instructions and is developing an optimized library designed to make signal processing programs easier to develop for MCU users. This library will include digital filter algorithms and general functions such as maths, trigonometric, and control functions. The digital filter algorithms are also intended for use with filter design utilities and design toolkits such as MATLAB and LabVIEW.

In addition, ARM has developed a series of Cortex-M4 hardware and software training courses to ensure licensees can efficiently integrate the Cortex-M4 processor into their design and realize maximum system performance with lowest risk and fastest time-to-market.

The Cortex-M4 processor has been licensed by five leading MCU semiconductor companies including NXP, STMicroelectronics and Texas Instruments.

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