SoC
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
  • Arm Cortex M3
  • Contact
Reading: What is arm Cortex-M7?
SUBSCRIBE
SoCSoC
Font ResizerAa
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
Search
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
Have an existing account? Sign In
Follow US
  • Looking for Something?
  • Privacy Policy
  • About Us
  • Sitemap
  • Contact Us
© S-O-C.ORG, All Rights Reserved.
Arm

What is arm Cortex-M7?

Elijah Erickson
Last updated: September 7, 2023 12:12 pm
Elijah Erickson 6 Min Read
Share
SHARE

The ARM Cortex-M7 is a high-performance, energy-efficient 32-bit processor core designed for advanced embedded applications. It is based on the ARMv7-M architecture and is the highest performance core in the Cortex-M series of embedded cores.

Contents
Key Features of Cortex-M7CPU CoreMemory ArchitectureDSP and FPUDebug and TracePower ManagementSecurity FeaturesLicensing and Silicon Implementation

The Cortex-M7 core is designed to deliver high DSP/floating point performance together with advanced features for real-time applications. It provides substantial improvements over previous Cortex-M generations including significantly higher performance and the addition of optional Floating Point Unit (FPU), Memory Protection Unit (MPU), and full Cache Coherence support.

Key Features of Cortex-M7

  • Speed and Performance – Up to 300 MHz operation frequency, 3.6 CoreMark/MHz efficiency.
  • DSP Capabilities – Optional single and double precision Floating Point Unit (FPU).
  • Advanced Peripherals – Embedded Trace Macrocell (ETM) and Micro Trace Buffer (MTB) for real-time system debugging.
  • Memory Architecture – Supports tightly-coupled memory (TCM) for low-latency access. Optional MPU and bus architecture supports Cache Coherent systems.
  • Power Management – Dynamic voltage scaling and low-power modes for energy-efficient operation.
  • Security Features – Optional TrustZone security extensions and Cryptography extensions.

CPU Core

The Cortex-M7 core has a 6-stage integer pipeline delivering high performance of up to 300 MHz operation frequency. It uses an enhanced Thumb instruction set with extra 16- and 32-bit instructions for improved performance, code density and efficiency.

The core microarchitecture incorporates multiple low-latency memory interfaces including separate instruction and data TCM interfaces for deterministic real-time response. It has a hardware multiply instruction and optional DSP extension instructions to accelerate signal processing and control algorithms.

The Cortex-M7 has branch prediction and return stack techniques to improve performance together with low-latency interrupt handling for fast exception response times.

Memory Architecture

The Cortex-M7 processor incorporates Tightly Coupled Memories (TCM) for fast low-latency access to code and data. This includes 64KB instruction TCM and 64KB data TCM interfaces.

For system memory, the core uses the AMBA AHB-Lite bus protocol which can be configured with multiple bus masters. It has optional MPU and cache support allowing implementation in cache coherent multi-core systems.

The optional MPU provides memory protection and accelerates context switching in advanced RTOSes. The processor also includes optional ECC logic for safety-critical applications requiring high reliability.

DSP and FPU

The Cortex-M7 optionally includes a single precision floating point unit (FPU) for accelerated floating point math performance. This is useful for applications involving complex math, matrix operations, filters or transforms.

The optional FPU provides full IEEE 754 compliance with high efficiency hardware assists for common transcendental functions. It can perform single-cycle floating point multiply-accumulate (MAC) operations.

The Cortex-M7 can also be configured with a double precision FPU for applications requiring 64-bit precision. Additional DSP instructions are included to accelerate DSP algorithms and digital control systems.

Debug and Trace

The Cortex-M7 contains embedded trace and debug features for Real-time system and application debugging. This includes 4-pin trace port supporting trace capture using Embedded Trace Macrocell (ETM) or Micro Trace Buffer (MTB).

ETM provides instruction and data tracing with minimal CPU overhead. MTB captures trace in on-chip memory for export via the debug interface. The embedded debug module provides breakpoint, watchpoint and system profiling capabilities.

Power Management

The processor includes advanced power saving techniques to enable energy-efficient operation. This includes multiple low power modes with fast wake-up times to minimize power consumption.

The Cortex-M7 supports dynamic voltage and frequency scaling to match CPU performance to application requirements. Clock gating and power gating techniques reduce dynamic and static power dissipation when not actively in use.

Security Features

For secure applications, the Cortex-M7 can be configured with Arm TrustZone extensions. This provides secure and non-secure states to protect trusted software and data resources from unauthorized access.

Optional cryptographic extensions support encryption, decryption, hashing and authentication using AES, SHA-1, SHA-256 algorithms. True random number generation and CRC calculation accelerators are also included.

Licensing and Silicon Implementation

The Cortex-M7 is designed by Arm and licensed to silicon partners for integration into system-on-chip (SoC) products. It is implemented on advanced process technologies down to 28nm and lower geometries.

The Cortex-M7 has been licensed and deployed in a wide range of embedded applications including automotive systems, industrial automation, robotics, wireless infrastructure, home appliances and consumer electronics.

Leading semiconductor companies that have licensed and implemented the Cortex-M7 in silicon include NXP, STMicroelectronics, Infineon, Silicon Labs, Cypress, Microchip, Renesas, Nuvoton and XMOS.

In summary, the Cortex-M7 provides high performance 32-bit processing for demanding embedded applications. With features like a 6-stage pipeline, optional DSP/FPU, debug/trace, and power management, it enables developers to meet requirements for advanced real-time systems.

Newsletter Form (#3)

More ARM insights right in your inbox

 


Share This Article
Facebook Twitter Email Copy Link Print
Previous Article What is ARM Cortex-M4?
Next Article What is arm Cortex-M23?
Leave a comment Leave a comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

2k Followers Like
3k Followers Follow
10.1k Followers Pin
- Sponsored-
Ad image

You Might Also Like

How to Get Compiled Code into a Custom SoC through the SWD Interface for Cortex M0?

Getting your compiled code into a custom System on Chip…

8 Min Read

Configuring Endianness in ARM Cortex-M3: Options and Limitations

The ARM Cortex-M3 processor supports both little endian and big…

9 Min Read

STM32F1 (Cortex-M3) Boot from RAM Behavior

The STM32F1 microcontroller based on the Cortex-M3 core provides the…

6 Min Read

What is the use of STM32F407?

The STM32F407 is a high-performance microcontroller developed by STMicroelectronics based…

10 Min Read
SoCSoC
  • Looking for Something?
  • Privacy Policy
  • About Us
  • Sitemap
  • Contact Us
Welcome Back!

Sign in to your account