Renesas — RA2E2 Microcontroller Group

Renesas RA2E2 Microcontroller Group

New ultra low-power MCUs pack innovative range of peripheral functions into tiny package

Renesas has added the RA2E2 Group to its 32-bit RA Family of microcontrollers, offering a combination of extremely low power consumption, an excellent set of peripherals for IoT end-point applications, and space-saving package options.


The new 48 MHz RA2E2 Group MCUs, based on the latest Arm® Cortex®-M23 core, accelerate users’ design cycles, and provide for easy upgrades to other RA Family devices.


The RA2E2 Group MCUs draw only 81 µA/MHz in active mode, and software standby current is just 200 nA with fast wake-up. The RA2E2 Group MCUs, which provide an I3C bus interface, also integrate cost-saving peripheral functions including an on-chip oscillator accurate to ±1%, power-on reset and low-voltage detector, EEPROM memory, and a temperature sensor.


These products can be used in highly space-constrained designs such as wearable devices thanks to the availability of miniature package options including a 16-pin WLCSP device measuring only 1.87 mm x 1.84 mm.


Suitable for use in harsh operating environments, the new devices support a wide ambient-temperature range of -40°C to 125°C.


Like all RA Family devices, the RA2E2 MCUs are supported by the Renesas Flexible Software Program (FSP) which includes highly efficient drivers and middleware to ease the implementation of communications and security functions. The FSP’s GUI simplifies and accelerates the development process. It enables flexible use of legacy code as well as easy compatibility and scalability with other RA Family devices.


Designers using FSP also have access to the extensive Arm ecosystem, offering a wide range of tools which help to speed time-to-market, as well as to the extensive Renesas partner network.


The RA2E2 Group consists of nine products in packages from 16 to 24 pins. Memory provision ranges from 16 kbytes to 64 kbytes of Flash and 8 kbytes of SRAM. The devices also include 2 kbytes of data Flash memory, a feature which other low pin-count devices do not provide.


  • Security features:
    • Cryptography accelerator
    • True random number generator
    • Memory protection units
  • Operating-voltage range: 1.6 V to 5.5 V
  • 5V-tolerant I/O


  • IoT devices
  • Industrial automation
  • Industrial sensors
  • Portable consumer devices
  • Home appliances
  • Building automation
  • Medical and healthcare equipment
  • Wearable devices

Development Kit

Kit Part Number: EK-RA2E2

The EK-RA2E2 evaluation kit enables users to evaluate the features of the RA2E2 MCU Group and develop embedded systems applications using the Renesas FSP and e2 studio integrated development environment.

Renesas — RA2E2 Microcontroller Group

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For more information on the
Renesas RA Series Microcontrollers

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