Renesas — RA4L1 Series Low Power Microcontrollers (MCUs) | Futureelectronics NorthAmerica Site
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Renesas — RA4L1 Series Low Power Microcontrollers (MCUs)

 

Renesas

 

Renesas RA4L1 Series Low Power Microcontrollers (MCUs)

80MHz Arm Cortex-M33 based low power MCU with TrustZone, a segment LCD controller and advanced security

The Renesas RA4L1 group is a low-power 32-bit microcontroller (MCU) family based on the Arm® Cortex®-M33 (CM33) core with TrustZone®. Designed to provide an optimal balance of low voltage operation, power efficiency, and high performance, the RA4L1 operates down to 1.6V with a standby current as low as 1.65µA. Its advanced low-power features allow engineers to dynamically optimize power and performance to meet their application needs.

The Renesas RA4L1 MCUs integrate key features such as a segment LCD display driver, an advanced security engine, RTC, ADC, timers, and multiple communication interfaces—including CAN FD, USB 2.0 FS, I2C/I3C, and low-power UARTs—making them ideal for industrial automation, home appliances, smart home, consumer electronics, building automation, and medical applications.

Available in a range of standard LQFP and QFN packages, as well as space-saving BGA and CSP options, the RA4L1 supports operating temperatures from -40 °C to 125 °C. Fully backed by the Renesas Flexible Software Package (FSP) and a robust ecosystem of hardware and software development tools, these MCUs enable faster time-to-market and simplified integration.

Features

  • 80MHz Arm Cortex-M33 with TrustZone
  • 512KB dual bank flash supporting BGO
  • 64KB SRAM with 32KB parity and 32KB ECC
  • 8KB data flash
  • 168µA/MHz active current, 1.65µA standby current
  • Fast wake-up <3.5µS (from MOCO)
  • 6 SCI (UART, Simple SPI, Simple I2C)
  • 2 low-power UARTs with 32kHz support
  • SPI/I2C multi-master interface
  • I3C interface
  • USB 2.0 FS
  • CAN FD
  • Quad SPI with XIP
  • 32-bit and 16-bit timers, 32-bit ultra-low power timers
  • 2 x watchdog timer
  • Real-Time Clock (RTC)
  • 12-bit ADC and 12-bit DAC
  • Low-power analog comparator
  • Temperature sensor
  • 8 x 48 segment LCD drive
  • 12-channel capacitive touch
  • Serial Sound Interface (SSI)
  • Advanced security engine with support for: TRNG, Unique ID, AES, ECC, and SHA

Applications

  • Mid-Range Smart Lock Designed to Support Aliro
  • Wireless Spirometer
  • Appliances, small appliances, home appliances
  • Smart home and building automation: entry systems, intercoms, thermostats, security panels, alarm sensors, smart locks, voice recognition
  • Office automation: asset management, printers, QR code readers, fingerprint scanners
  • Healthcare: heart rate monitors, glucose meters, oximeters, blood pressure monitors
  • Voice AI applications

 

 

Renesas — RA4L1 Series Low Power Microcontroller

 

Renesas RA4L1 MCU with Integrated LCD and Cap Touch Overview

RA4L1 Block Diagram

EK-RA4L1 Evaluation Kit

For RA4L1 MCU Group

The EK-RA4L1 evaluation kit enables users to seamlessly evaluate the features of the RA4L1 MCU group and develop embedded systems applications using Renesas' Flexible Software Package (FSP) and e2 studio IDE. The users can use rich on-board features along with their choice of popular ecosystems add-ons to bring their big ideas to life.

Getting Started
  1. The EK-RA4L1 board comes pre-programmed with a Quick Start example project (source code provided in the EK-RA4L1 example project bundle).
  2. Power up the EK-RA4L1 board through the USB debug port (J10) using the micro USB device cable connected to a 5V power source. The white power LED will light up.
  3. The Quick Start example project will begin to execute blinking the blue user LED.
  4. Refer to the EK-RA4L1 v1 Quick Start Guide (PDF | English, 日本語) to explore additional functionality of the Quick Start example project.