Cortex-R4 Processor

The ARM® Cortex®-R4 processor is the smallest deeply embedded real-time processor based on the ARMv7-R architecture. The Cortex-R4 processor delivers high-performance, real-time responsiveness, reliability and dependability with high error-resistance. It offers excellent energy efficiency and cost effectiveness for ASIC, ASSP and MCU embedded applications. The Cortex-R4 processor is very flexible and can be configured at synthesis time to optimize its feature set to match application requirements.

Key Benefits

  • Smallest Cortex-R processor providing high design flexibility to achieve excellent energy efficiency and system cost effectiveness.
  • Highly deterministic for fast interrupt handling in real-time applications.
  • Widely deployed real-time processor with fault containment built into the core.


The Cortex-R4 is used extensively in high-volume, deeply embedded System-on-Chip (SoC) applications such as:

Electronic units for
automotive systems
Hard-disk drive
Wireless baseband
Cortex-R4 chip diagram
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Related IP

The Cortex-R4 processor can be incorporated into a SoC using a broad range of ARM technology including Graphics IP, System IP, and Physical IP. It is fully supported by ARM development tools. Related IP includes:

Compatible IP Tools


ARM training courses and Active Assist on-site system-design advisory services enable licensees to efficiently integrate the Cortex-R4 processor into their design to realize maximum system performance with lowest risk and fastest time-to-market.



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