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Arm Cortex-M85 MCU Feather SoM

Overview

In the fast-paced IoT and building automation world, reducing time-to-market is crucial. Open-source communities like Adafruit offer excellent resources and workflows for rapid prototyping, testing, and deployment. Adafruit's Feather development boards are flexible, portable, and stackable, making them ideal for building products and systems.

The Renesas Arm® Cortex®-M85 MCU Feather system-on-module (SoM) empowers developers with a compact, high-performance platform for building automation and industrial applications. Leveraging the Arm Cortex-M85 processor, it delivers superior processing power, real-time performance, and energy efficiency, perfect for sophisticated automation systems. This SoM can integrate with other boards featuring Bluetooth, Wi-Fi, or cellular connectivity, supported by extensive software communities like Adafruit.

System Benefits:

  • 480MHz Arm Cortex-M85 MCU provides significant processing power for high-demand tasks without compromising cost-effectiveness.
  • Ultra-fast bare metal programming ensures fast execution and efficient resource use, critical for real-time applications.
  • General-purpose Feather carrier board is versatile and compatible with a wide range of Feather modules for diverse projects and applications.
  • LiPo battery powered with a LiPo charger and a low-power design allows for battery-operated designs and power-efficient performance.
  • Small Feather form factor allows for compact designs and space efficiency.

Block Diagram

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4:3 ratio Connector Arrow Bi-directional.211 Bi-directional.207 Bi-directional.208 Bi-directional.205 Bi-directional.204 Bi-directional.199 Sheet.1 Sheet.2 Sheet.3 Sheet.4 EU206 EU206 EU206 ETH Controller ETH Controller ETH Controller ETH Controller ETH Controller ETH Controller CAN TRx CAN TRx CAN TRx ETH Connector ETH Connector ETH Connector ETH Connector ETH Connector ETH Connector CAN Connector CAN Connector CAN Connector CAN Connector CAN Connector CAN Connector Headphone Jack Headphone Jack Headphone Jack Microphone Jack Microphone Jack Microphone Jack Pmod Type6 (I2C) Pmod Type6 (I2C) Pmod Type6 (I2C) Pmod Type2 (SPI) Pmod Type2 (SPI) Pmod Type2 (SPI) SD Card SD Card SD Card Barrel Jack Connector Barrel Jack Connector Barrel Jack Connector CAN TRx CAN TRx CAN TRx User LED User LED User LED NOR Flash NOR Flash NOR Flash CMOS CAM Connector CMOS CAM Connector CMOS CAM Connector JTAG Connector JTAG Connector JTAG Connector Feather SoM Feather SoM Feather SoM Custom Carrier Board Custom Carrier Board Custom Carrier Board Sheet.126 Sheet.127 Sheet.128 Sheet.130 Sheet.131 Connector 1.154 3.7V 3.7V 3.7V 5V 5V 5V 4.2V 4.2V 4.2V Sheet.137 Sheet.138 Sheet.139 Sheet.141 Sheet.142 Sheet.143 3.3V 3.3V 3.3V Sheet.159 Connector 1.154.160 I2C I2C I2C Sheet.171 Sheet.172 Sheet.173 Sheet.174 Sheet.175 Sheet.176 Sheet.177 Sheet.179 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Sheet.184 Sheet.185 Connector 1.154.186 Connector 1.154.187 Connector 1.154.188 5V 5V 5V 3.3V 3.3V 3.3V 1.8V 1.8V 1.8V FTDI FTDI FTDI LDO 1 LDO LDO LiPo Charger LiPo Charger LiPo Charger LiPo Connector LiPo Connector LiPo Connector USB-C Connector USB-C Connector USB-C Connector LDO 3 LDO LDO LDO 2 LDO LDO Bi-directional Sheet.140 Bi-directional.198 Bi-directional.200 Audio Codec Audio Codec AudioCodec Bi-directional.209 12 + 16Pin Feather Connector 12 + 16-Pin Feather Connector 12 + 16-Pin Feather Connector Connector Line 12 + 16Pin Feather Connector 12 + 16-Pin Feather Connector 12 + 16-Pin Feather Connector Sheet.215 MCU MCU MCU UART UART UART QSPI QSPI QSPI CEU CEU CEU JTAG JTAG JTAG SPI SPI SPI I2C I2C I2C SD SD SD GPIO GPIO GPIO

MCU

RA Arm Cortex-M MCUs

LiPo Charger

Battery Charger ICs

LDO

Linear Regulators (LDO)

LDO

Linear Regulators (LDO)

LDO

Linear Regulators (LDO)

Audio Codec

Audio Codecs

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The RA8M1 allows you to achieve the full potential of a real-time operating system (RTOS) while leveraging the performance boost provided by the 64-bit Arm® Cortex®-M85 CPU core with a maximum operating frequency of 480MHz. Besides the processor, the Feather SoM contains the classic Feather features: GPIOs (analog and digital), I2C and SPI communication pins, UART pins, a LiPo battery power plug, and the USB programming port. The SoM also features a USB Type-C for powering the board and for USB debug upload.