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Meet the Industry's Most Energy-Efficient MCU

  • Braemac
  • Jul 1
  • 2 min read

RA2L2 from Renesas


Built on a 48 MHz Arm® Cortex®- M23 core, the RA2LS from Renesas is an entry-level single-chip microcontroller in their RA Family. With up to 128 KB of code flash and 16 KB of SRAM, it is an efficient compact solution for embedded applications. Leveraging Renesas’ low-power process technology and optimized processing, the RA2L2 is the industry’s most energy efficient and ultra-low power MCU.


The RA2L2 is ideal for battery-powered, space-constrained applications requiring high performance and low power consumption. With a wide operating voltage range (1.6V to 5.5V), the RA2L2 supports USB Type-C®, USB Full-Speed (FS) without crystal, CAN, I3C, low power UART, SSI, and other serial communication functions. Offering pin-to-pin compatibility across other RA groups, it offers a smooth path for scaling or upgrading within the Renesas ecosystem.


RA2L2 Specifications
RA2L2 Specifications

RA2L2 Key Features

  • 48MHz Arm Cortex-M23 core

  • Up to 128KB Flash and 16KB SRAM

  • 4KB data flash to store data as in EEPROM

  • Scalable from 32-pin to 64-pin packages

  • Wide operation temperature range from -40 °C to 125 °C

  • Wide voltage range of 1.6V to 5.5V

  • ±1% high-accuracy high-speed on-chip oscillator

  • 32-bit general PWM timer, low-power asynchronous general-purpose timer

  • 16-bit general PWM timer

  • Real-time clock (RTC)

  • 12-bit A/D converter

  • Temperature sensor

  • USB FS without crystal, USB Type-C interface

  • SCI (UART, simplified SPI, simplified I2C, smart card interface)

  • Low-power UART

  • I3C bus

  • CAN

  • SPI

  • SSI (Serial Sound Interface)

  • Random number generator

  • Safety functions


RA2L2 Key Applications

  • USB Data Logger

  • Electronic Toll with GNSS

  • Gaming Keyboard

  • Gaming Mouse

  • Current Loop Communication with Analog PAK

  • Universal USB Converter for USB-UART, USB–I2C, USB–13C

  • Audio streaming device

  • PC peripherals

  • POS system peripherals

  • General-purpose systems

  • IoT devices

  • Industrial automation and sensors

  • Consumer applications

  • Home appliances

  • Building automation

  • Medical and healthcare devices

  • Wearable device


To learn more about integrating the RA2L2 group into your next embedded design, contact info@Braemac.com for technical support and availability.

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