Architecture
ARM vs RISC-V: Choosing the Right Architecture
A Technical Summary for Embedded Systems Design
Technical summary
Executive summary
The choice between ARM and RISC-V architectures has significant implications for embedded system design. This comparison guide analyzes both architectures across performance, power efficiency, ecosystem maturity, toolchain support, and total cost of ownership to help engineers make informed decisions.
Key findings
- ARM Cortex-M series offers a mature ecosystem with 20+ years of proven deployment
- RISC-V removes per-core royalties; total cost depends on IP, tools and verification
- Power efficiency depends on the core implementation and process more than on the ISA
- RISC-V custom extensions enable application-specific optimizations
- ARM’s security extensions (TrustZone) remain more mature than RISC-V alternatives
What the paper covers
- 01Architecture Fundamentals
- 02Performance Benchmarks
- 03Power Efficiency Analysis
- 04Ecosystem and Toolchain Comparison
- 05Licensing and Cost Considerations
- 06Decision Framework
“Choose the ISA last: pick the part whose peripherals, toolchain and supply meet the product, then check whether it is Arm or RISC-V.”
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- ARM
- RISC-V
- microcontroller
- embedded systems
- processor architecture
- MCU selection