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    Cortex-M4 Overview

     

    The ARM Cortex™-M4 processor is the latest embedded processor by ARM specifically developed to address digital signal control markets that demand an efficient, easy-to-use blend of control and signal processing capabilities. The combination of high-efficiency signal processing functionality with the low-power, low cost and ease-of-use benefits of the Cortex-M family of 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.

     

    Award-winning energy efficient digital signal control

    The Cortex-M4 offers unparalleled capability to integrate 32-bit control with leading digital signal processing techniques for markets that require very high levels of energy efficiency.

     

    Easy-to-use technology

    The Cortex-M4 makes signal processing algorithm development easy through an excellent ecosystem of software tools and the  Cortex Microcontroller Software Interface Standard (CMSIS).

     

    Full featured

    The processor executes Thumb®-2 instruction set for optimal performance and code size, including hardware division, single cycle multiply, and bit-field manipulation. The Cortex-M3 NVIC is highly configurable at design time to deliver up to 240 system interrupts with individual priorities, dynamic reprioritization and integrated system clock.

     

    Rich connectivity

    The combination of features and performance enables Cortex-M3 based devices to efficiently handle with multiple I/O channels and protocol standards such as USB OTG (On-The-Go).

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    ARM Cortex-M4 Features

    ISA Support

    Thumb® / Thumb-2

    DSP Extensions

    Single cycle 16,32-bit MAC

    Single cycle dual 16-bit MAC

    8,16-bit SIMD arithmetic

    Hardware Divide (2-12 Cycles)

    Floating Point Unit

    Single precision floating point unit

    IEEE 754 compliant

    Pipeline

    3-stage + branch speculation

    Performance Efficiency

    2.19 CoreMark/MHz  -  1.25 DMIPS/MHz

    Memory Protection

    Optional 8 region MPU with sub regions and background   region

    Interrupts

    Non-maskable Interrupt (NMI) + 1 to 240 physical   interrupts

    Interrupt Priority Levels

    8 to 256 priority levels

    Wake-up Interrupt Controller

    Up to 240 Wake-up Interrupts

    Sleep Modes

    Integrated WFI and WFE Instructions and Sleep On Exit   capability.

    Sleep & Deep Sleep Signals.

    Optional Retention Mode with ARM Power Management Kit

    Bit Manipulation

    Integrated Instructions & Bit Banding

    Debug

    Optional JTAG & Serial-Wire Debug Ports. Up to 8   Breakpoints and 4 Watchpoints.

    Trace

    Optional Instruction Trace (ETM), Data Trace (DWT), and   Instrumentation Trace (ITM)

     

     

     

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