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Renesas RA2E2 Series MCUs

48MHz Arm® Cortex®-M23 Ultra-Low Power General Purpose Microcontroller

The Renesas RA2E2 Group of MCUs, the RA Family’s entry line single-chip microcontroller, is based on the 48-MHz Arm® Cortex®-M23 core.

Coupled with Renesas' innovative on-chip peripheral functions, the RA2E2 MCU Group offers ultra-low power operation and high speed serial communication with the smallest package options of 20-pin and 24-pin QFN and 16-pin wafer-level CSP. This satisfies the needs of cost-sensitive and space-constrained applications.

The Renesas RA2E2 Group of microcontrollers enable extremely cost-effective designs for IoT sensor nodes, portable devices, industrial control, and any battery-operated application that requires developers to cut power consumption, cost and space.


  • 48MHz Arm® Cortex®-M23
  • Up to 64kB Flash Memory and 8kB SRAM
  • 2kB Data Flash to store data as in EEPROM
  • Scalable from 16-pin to 24-pin packages
  • Wide operating voltage range of 1.6V to 5.5V
  • Best-in-class Active/Standby power consumption in Arm Cortex-M23 microcontroller
  • 12-bit ADC, Temperature Sensor
  • 16-bit General PWM Timer, 32-bit Low power Asynchronous General Purpose Timer
  • I3C bus interface
  • SCI (UART, Simple SPI, Simple I2C)
  • SPI interface
  • Safety
  • Security and Encryption
  • 125 °C operating temperature support
  • Smallest package options (16-pin WLCSP, 20 and 24-pin HWQFN)


  • General purpose
  • IoT devices
  • Industrial automation, industrial sensors
  • Portable consumer devices
  • Home appliances
  • Building automation
  • Medical and healthcare
  • Wearable devices

Block Diagram

Renesas RA2E2 MCU Block Diagram

For more information on the
Renesas RA Series Microcontrollers


Renesas — RA2E2 48MHz Ultra-Low Power, Tiny MCUs