RA4M3 Microcontrollers to Boost Operating Performance up to 100MHz in Industrial and IoT Applications

Arm Cortex-based 32-bit RA4M3 Microcontrollers

Renesas Electronics has released new 32-bit RA4M3 microcontrollers that can boost operating performance up to 100 MHz in industrial and IoT applications. The Arm TrustZone technology, a Secure Crypto Engine, and a suite of new memory enhancements allow the device to develop safe and secure IoT edge devices for low power applications such as security, metering, industrial, and HVAC applications.


The Secure Crypto Engine is designed with multiple symmetric and asymmetric cryptography accelerators, advanced key management, security lifecycle management, power analysis resistance, and tamper detection. The RA4M3 MCUs have power consumption down to 119uA/MHz in active mode running CoreMark from flash memory and 1.6mA in standby mode with standby wakeup times as fast as 30 µs. The increased embedded RAM with parity/ECC makes the RA4M3 MCUs ideal for safety-critical applications. Other features of RA4M3 MCUs offer lower BOM costs, including capacitive touch sensing, embedded flash memory densities up to 1 MB, and analog, communications, and memory peripherals.


With the help of the Flexible Software Package (FSP), customers can re-use their legacy code and combine it with software from the Arm partners ecosystem and the RA partner ecosystem. The development cockpit of the e2 studio provides the key steps for project creation module selection and configuration, code development, code generation, and debugging.


Feature of RA4M3 Microcontrollers

  • 100 MHz Arm Cortex-M33 with TrustZone technology on a 40nm process
  • Integrated 1 MB flash memory, 128 KB RAM, 8 KB Data Flash, and 1 KB stand-by SRAM
  • Low power consumption delivering an operating current of 119 μA/MHz in active mode and 1.6 mA standby current with 30 µs wakeup time
  • Background operation and Block SWAP function for the flash memory
  • Capacitive touch sensing unit
  • Multiple interfaces including Quad SPI and SDHI memory interfaces, SSI, USB2.0 Full Speed, SCI, and SPI/I2C
  • Scalable from 64-pin to 144-pin LQFP packages (including LGA- and BGA-ready options)
Component Datasheet

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