The Arm Cortex-R52 processor delivers the highest level of integrated capability for functional safety of any Arm processor. 

Cortex-R52 Block Diagram.

Getting Started

The Cortex-R52 processor meets the rising performance needs of advanced real-time embedded systems. As the first Armv8-R processor, Cortex-R52 introduces support for a hypervisor, simplifying software integration with robust separation to protect safety-critical code.


Architecture Armv8-R
Instruction Set Arm and Thumb-2. Supports DSP instructions and a configurable Floating-Point Unit either with single-precision or double precision and Neon.
Microarchitecture 8-stage pipeline with instruction pre-fetch, branch prediction, superscalar in order execution, parallel execution paths for load-store, MAC, shift-ALU, divide and floating-point. Also features a hardware divider and is binary compatible with the Arm9, Arm11, Cortex-R4Cortex-R5, Cortex-R7 and Cortex-R8 embedded processors.
Up to quad-core Multi-processor configurations of up to 4 integer CPUs within a single cluster or 8 logical cores (in DCLS configuration).
Dual Core Lock Step (DCLS) Redundant Cortex-R52 cores in lockstep for fault detection in dependable systems with optional Split/lock configuration to decouple checking core enabling independent execution.
Safety Package Licensable, extended safety package to simplify product safety implementation.
Self Test Technology High fault coverage through ‘Built In Self Test’ capabilities (BIST).
Software Test Libraries Complementary libraries providing additional non-destructive run time fault coverage.
Cache controllers Optional Harvard memory architecture with write through Instruction and Data cache. Cache sizes are independently configurable for 4K to 32K.
Tightly-Coupled Memories Optional Tightly-Coupled Memory interfaces are for highly deterministic or low-latency applications that may not respond well to caching (e.g. instruction code for interrupt service routines and data that requires intense processing). Cortex-R52 supports up to 3 TCMs, each up to 1MB.
Generic Interrupt Controller Fully integrated Generic Interrupt Controller (GIC) supporting complex priority-based interrupt handling managing standard interrupt (IRQ), fast interrupt (FIQ) inputs.The processor includes low-latency interrupt technology that allows long multi-cycle instructions to be interrupted and restarted. Deferral of lengthy memory accesses occurs in certain circumstances. Configurable to support from 32 to 960 interrupts including Software Generated Interrupts which can be routed between multiple cores.
Memory Protection Unit (MPU) Level 1 MPU always implemented with optional Level 2 MPU
Up to 24 region Level 1 MPU configures attributes for regions from 64 bytes upwards with resolution of 64 bytes.
Optional additional Level 2 MPU operating at EL2 also configures attributes for up to 24 regions with as little as 64 Byte resolution. All transactions executed at EL0/EL1 perform a look-up in both MPUs with the combined least permissive attributes taken. All transactions executed at EL2 perform a look-up in Level 2 MPU only.
Floating-Point Unit (FPU) There is support for two FPU options: either a single precision-only with 32 32-bit single precision registers or double precision in Advanced SIMD implementations with 32 64 bit or 16 128 bit double precision registers. The FPU performance is optimized for both single and double precision calculations. Operations include add, subtract, divide, multiply, multiply and accumulate, square root, conversions between fixed and floating-point, and floating-point constant instructions.
Advanced SIMD (NEON) Optionally implement when double precision floating point is included is the Advanced SIMD supporting integer or single precision results.
ECC Single-bit error correction and double-bit error detection for cache and TCM memories. All bus interfaces using Error Correcting Code (ECC). Single-bit soft errors are automatically corrected by the processor. In addition, full and flexible support for managing hard errors.
Master AMBA AXI bus 128-bit AMBA AXI-4 bus master for Level-2 memory and peripheral access, with ECC protection.
Slave AXI bus 128-bit AMBA AXI-4 bus slave port allows DMA masters to access the TCMs for high speed streaming of data in and out of the processor, with ECC protection.
Low Latency Peripheral Port (LLPP) A shared dedicated 32-bit AMBA AXI port to integrate latency-sensitive peripherals more tightly with the processor, with ECC protection.
Flash Interface Port Per core dedicated 128-bit AMBA AXI port to integrate latency-sensitive Flash memory tightly to a specific core within the processor cluster, ECC protection configurable for either 128-bit or 64-bit chunk size.
Bus Interconnect Protection Optional additional protection to guard against errors in the interconnect switch fabric, and end to end transaction protection.
Debug Debug Access Port is provided. Its functionality can be extended using CoreSight Debug and Trace.
Trace Cortex-R-52 includes a CoreSight Embedded Trace Module that can be configured per core or shared between the cores in the cluster.

  • Manual containing technical information.
  • Cortex-R52 Technical Reference Manual

    For system designers and software engineers, the Cortex-R52 manual provides information on implementing and programming Cortex-R52 based devices.

    Read here
  • A program that is running on a desktop.
  • Cortex-R Series Programmer's Guide

    For Software developers working in assembly language, this guide covers programming Cortex-R series devices.

    Get the guide
  • a ulink, a board, a desktop.
  • Development Tools for Cortex-R Series

    DS-5 Development Studio and a range of 3rd party and open source tools support Cortex-R series software development.

    Learn more
  • A triangle with an exclamation mark in.
  • Armv8-R and Safety    

    ETAS explore the implementation of AUTOSAR safety features using the Cortex-R52.

    Armv8-R and Safety

Get Support

Arm Support

Arm training courses and on-site system-design advisory services enable licensees to efficiently integrate the Cortex-R52 processor into their design to realize maximum system performance with lowest risk and fastest time-to-market.

Arm training courses  Arm Design Reviews  Open a support case

Related IP

The Cortex-R52 processor can be incorporated into a SoC using a broad range of Arm technology including System IP and Physical IP. It is fully supported by Arm development tools. Related IP and tools include:


CoreLink Network Interconnect Family

CoreLink DMC-500

CoreLink Static Memory Controllers

CoreSight SoC-400

Socrates System IP Tooling   

Logic IP

Embedded Memory IP

DS-5 Development Studio

Fast Models

Cycle Models

Development Boards

 Software Test Libraries


Community Blogs

Community Forums

Suggested answer '' does not support the current part 'xc7a35ticsg324-1L'
  • AXI
  • DesignStart
  • Support
  • Block
0 votes 590 views 3 replies Latest 16 hours ago by BBtheEE Answer this
Answered Looking for an eval board with octa core Armv8 CPU
  • AArch64
0 votes 353 views 9 replies Latest 18 hours ago by Dzik Answer this
Suggested answer setting brakpoint from code 0 votes 79 views 2 replies Latest 21 hours ago by Joseph Yiu Answer this
Answered aarch64 Exception Level Sw itch from EL1 to EL0 0 votes 143 views 7 replies Latest yesterday by michaelyuanfeng Answer this
Not answered reference source code to verify the Cortex-R52
  • cortex-r52
  • Evaluation Boards
0 votes 45 views 0 replies Started 2 days ago by Jorney Answer this
Answered Exclusive Access Restriction Clarification
  • AMBA
0 votes 1509 views 4 replies Latest 2 days ago by Taniya Garg Answer this
Suggested answer '' does not support the current part 'xc7a35ticsg324-1L' Latest 16 hours ago by BBtheEE 3 replies 590 views
Answered Looking for an eval board with octa core Armv8 CPU Latest 18 hours ago by Dzik 9 replies 353 views
Suggested answer setting brakpoint from code Latest 21 hours ago by Joseph Yiu 2 replies 79 views
Answered aarch64 Exception Level Sw itch from EL1 to EL0 Latest yesterday by michaelyuanfeng 7 replies 143 views
Not answered reference source code to verify the Cortex-R52 Started 2 days ago by Jorney 0 replies 45 views
Answered Exclusive Access Restriction Clarification Latest 2 days ago by Taniya Garg 4 replies 1509 views