Recently, Renesas Electronics announced the launch of the industry’s first RA8 series MCU based on the Arm® Cortex®-M85 processor, offering outstanding performance of 6.39 CoreMark/MHz, suitable for various computing-intensive applications in industrial automation, home appliances, smart homes, consumer electronics, building/home automation, medical, and AI fields. As an important partner of Renesas, RT-Thread has taken the lead in supporting the RA8M1 series MCU BSP, which, combined with Renesas’ flexible software package (FSP) and RT-Thread’s rich software packages, can significantly accelerate application development speed.
Arm’s Most Powerful MCU Core: Arm® Cortex®-M85
The Cortex®-M85 is based on the Armv8.1-M architecture, providing the highest scalar and signal processing performance in the Cortex®-M series, with scalar performance exceeding 6 CoreMark/MHz and 3 DMIPS/MHz. The Cortex®-M85 is a CPU for the embedded field, without an MMU, and real-time control— the most powerful MCU on the planet. Due to the implementation of Arm Helium technology, the Cortex-M85 exhibits significantly higher machine learning (ML) and digital signal processing (DSP) capabilities than the Cortex-M7. Compared to the Cortex®-M7, its machine learning capability has increased fourfold, and DSP capability has increased threefold. In simple terms, Cortex®-M85 ≈ Cortex®-M7 + TrustZone + Helium.
RA8M1 Chip Features
● Core: 480 MHz Arm Cortex-M85, with Helium and TrustZone technology
● Storage: Integrated 2MB/1MB flash and 1MB SRAM (including TCM, 512KB ECC protected)
● Peripherals: Compatible with xSPI eight-line OSPI (with XIP and instant decryption/DOTF), CAN-FD, Ethernet, USBFS/HS, 16-bit camera interface, and I3C, etc.
● Advanced Security: Outstanding encryption algorithms, TrustZone, immutable storage, tamper-proof features with DPA/SPA attack protection, secure debugging, secure factory programming, and lifecycle management support
● Package: 100/144/176 LQFP, 224 BGA
EK-RA8M1 Development Board Introduction
The EK-RA8M1 is a development board produced by Renesas Electronics to help users easily evaluate the characteristics of the RA8M1 MCU product group. Users can leverage the rich onboard features and select popular ecosystem plugins to turn rich ideas into reality.
RT-Thread & RENESAS RA8M1
Currently, RT-Thread has supported the Cortex®-M85 architecture, including management of interrupts, thread scheduling, etc. At the same time, it has adapted to Renesas’ latest FSP 5.0.0 release and the BSP of the EK-RA8M1 development board.
It has been merged into the RT-Thread mainline master version, and interested friends are welcome to experience it!
EK-RA8M1 Development Board Repository Address:
https://github.com/RT-Thread/rt-thread/tree/master/bsp/renesas/ra8m1-ek
Supported Development IDE:
● RT-Thread Studio
● MDK V5.38
Supported Compilation Platforms:
● armclang (AC6 V6.19)
● LLVM (V16/17) ARM-software/LLVM-embedded-toolchain-for-Arm (github.com)
● GCC
Running Result Demonstration
After successfully downloading the program, the system will automatically run and print system information.
Video Demonstration
More RT-Thread RA8 achievements will be released soon, stay tuned!
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