cortex-m85

Posted on by Tomisin Olujinmi - No Comments on Renesas RA8E1 and RA8E2 entry-level Arm Cortex-M85 MCUs target cost-sensitive applications

Renesas RA8E1 and RA8E2 entry-level Arm Cortex-M85 MCUs target cost-sensitive applications

Fast Prototyping Board for Renesas RA8E1

Renesas has expanded its Arm Cortex-M85-based RA8 series to include two new entry-level MCUs, RA8E1 and RA8E2. The new microcontrollers perform similarly to other Arm Cortex-M85-based microcontrollers and are offered at a lower price point thanks to a streamlined feature set to reduce costs. The RA8E1 and RA8E2 groups of microcontrollers will be useful for high-volume applications in industrial and home automation, healthcare, office equipment, and consumer products. We have previously covered other models in Renesas’ RA8 series, including the Renesas RA8T1, RA8D1, and the very first Cortex-M85 microcontroller, the Renesas RA8M1. The RA8 series consists of microcontrollers based on the Arm Cortex-M85 core with a performance of 6.39 CoreMark/MHz and Arm’s M-Profile Vector Extension which provides a 4x performance boost for DSP and ML workloads while maintaining low power consumption. The RA8E1 and RA8E2 Cortex-M85 microcontroller groups differ mostly in clock speed, available internal and external memory, communication interfaces, […]

Posted on by Supachai Vorapojpisut - 1 Comment on RT-Thread Vision board review – Part 1: OpenMV on Renesas RA8D1 Cortex-M85 microcontroller

RT-Thread Vision board review – Part 1: OpenMV on Renesas RA8D1 Cortex-M85 microcontroller

RT-Thread VIsion board vs WeAct STM32H743

I am always interested in real-time operating systems (RTOS) for microcontrollers (MCUs) with my past backgrounds in µC/OS-II, mbed, and FreeRTOS. When the opportunity arose to get my hands on the RT-Thread Vision Board, thanks to the RT-Thread team and CNX Software, I was excited to check it out. This board, a collaboration between RT-Thread and Renesas, packs a powerful Renesas RA8D1 Cortex-M85 MCU and comes pre-loaded with OpenMV firmware. OpenMV’s MicroPython engine lets you jump right into embedded vision development, perfect for experimenting with computer vision tasks. But the real power lies in RT-Thread’s ability to handle tasks very quickly, which we’ll explore with C/C++ development in part two. This first part will focus on getting you familiar with the hardware using the OpenMV firmware, making it a smooth entry point for beginners. Plus, I have a collection of other Renesas evaluation boards, so you can bet I’ll be […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Renesas RA8T1 Cortex-M85 MCU targets motor control applications

Renesas RA8T1 Cortex-M85 MCU targets motor control applications

Renesas RA8T1 block diagram

It took a while before Renesas released its first Arm Cortex-M85 microcontroller (RA8M1) in October 2023, but the company has now launched the RA8T1 Cortex-M85 MCU for motor control just a few weeks after announcing the RA8D1 for HMI applications. The RA8T1 group is the third Cortex-M85 microcontroller family from Renesas with a feature set optimized for motor control and leveraging machine learning through Arm Helium technology and a DSP for predictive maintenance requirements for motors. Renesas RA8T1 key features and specifications: MCU core – Arm Cortex-M85 clocked at 480 MHz with Helium MVE (M-Profile Vector Extension) with 32KB I/D caches, 12KB data flash Memory & Storage 1MB SRAM including 128KB TCM 1MB to 2MB Flash memory 2x SD/MMC host interfaces (SDHI) Communication interfaces Ethernet MAC with DMA USB – 1x USB 2.0 Full Speed interface 2x CAN-FD Up to 6x SCI (UART, Simple SPI, Simple I2C) 2x SPI up […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Renesas RA8D1 Arm Cortex-M85 SoC features LCD display interfaces, 2D graphics accelerator

Renesas RA8D1 Arm Cortex-M85 SoC features LCD display interfaces, 2D graphics accelerator

Renesas RA8D1

Renesas RA8D1 is a new Arm Cortex-M85 microcontroller with graphics capabilities such as a 2D graphics accelerator and MIPI DSI and parallel RGB interfaces to connect an LCD that will make the chip suitable for HMI applications. Renesas introduced the world’s first Arm Cortex-M85 microcontroller with the RA8M1 just a few weeks ago, but the MCU has limited multimedia capabilities with just a 16-bit Capture Engine Unit (CEU) interface to connect a camera. The second member of the Renesas RA8 family fills this void with the RA8D1 microcontroller adding an LCD controller and a 2D graphics drawing engine on top of the CEU camera interface. Renesas RA8D1 specifications: MCU core – Arm Cortex-M85 clocked at 480 MHz with Helium MVE (M-Profile Vector Extension) with 32KB I/D caches, 12KB data flash Memory & Storage 1MB SRAM with TCM (128KB) 1MB to 2MB Flash memory 32-bit external SDRAM interface Display interfaces and […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 3 Comments on Renesas RA8M1 is the world’s first Arm Cortex-M85 microcontroller

Renesas RA8M1 is the world’s first Arm Cortex-M85 microcontroller

Renesas RA8M1 Arm Cortex-M85 microcontroller

Renesas RA8M1 is an up to 480 MHz Arm Cortex-M85 microcontroller with Arm Helium technology to improve DSP and machine learning performance on Cortex-M microcontrollers, and delivering up to 6.39 CoreMark/MHz performance using EEMBC’s CoreMark, or over 3,000 CoreMark at 480 MHz. The Arm Cortex-M85 core was first unveiled in April 2022 as a faster Cortex-M7 alternative and new Arm Helium technology that delivers machine learning performance similar to Cortex-M55 application processor. We had some teases about the upcoming Renesas Cortex-M85 in the last year, but the world’s first Cortex-M85 microcontroller is finally here. Renesas RA8M1 key features and specifications: MCU core – Arm Cortex-M85 clocked at 240 to 480 MHz with Helium MVE (M-Profile Vector Extension) with 32KB I/D Caches and 12KB Data Flash Memory & Storage 1MB SRAM with TCM 1MB to 2MB Flash memory External memory interfaces (CS/SDRAM) Camera – 16-bit Capture Engine Unit (CEU) interface Communication […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Arm Cortex-M85 is faster than Cortex-M7, offers higher ML performance than Cortex-M55

Arm Cortex-M85 is faster than Cortex-M7, offers higher ML performance than Cortex-M55

Arm Cortex M85

Arm has introduced a new MCU-class core with the Cortex-M85 core that offers higher integer performance than Cortex-M7, and higher machine learning performance compared to Cortex-M55 equipped with Helium instructions. The new Cortex-M85 core is designed for developers requiring increased performance for their Cortex-M powered products without going to Cortex-A cores, and instead, keeping important features such as determinism, short interrupt latencies, and advanced low-power management modes found in all Cortex-M cores. Arm Cortex-M85 key features and specifications: Architecture – Armv8.1-M Performance efficiency – 6.28 CoreMark/MHz and 3.13/4.52/8.76DMIPS/MHz (1. “ground rules” in the Dhrystone documentation, 2. inlining of functions,  3. simultaneous (”multi-file”) compilation). Bus interfaces AMBA 5 AXI 64-bit Main system bus (compatible with AXI4 IPs) AMBA 5 AHB 32-bit Peripheral bus AMBA 5 AHB 64-bit TCM Access bus (subordinate port) Pipeline – 7-stage (for main integer pipeline) Security Arm TrustZone technology PACBTI extension (Pointer Authentication, Branch Target Identification) helps […]

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