The RL78/F24 next-generation super low-power automotive microcontrollers are ideal for realizing future highly reliable smart actuators and sensors, as well as low-end body ECUs. As an innovative prolongation of the known RL78/F1x MCUs, the RL78/F24 can cover prospective market requirements. With its increased CPU performance, high-temperature capability, and enhanced peripheral feature set, the RL78/F24 is a perfect fit for various applications.

RL78/F2x products are designed according to ISO 26262 and support functional safety (FuSa) up to ASIL B. They support up to the EVITA-Light security standard or more. An AES crypto module can handle key lengths of up to 256 bits and supports secure boot and authentication. To further boost the calculation performance for BLDC (FOC) motor control and DC/DC control systems, RL78/F2x is equipped with the unique application accelerator IP to offload complex trigonometric and arithmetic processing.

To respond to the new E/E automotive architecture trend, the RL78/F24 is equipped with a CAN FD interface. RL78/F2x MCUs are fully hardware and software compatible with RL78/F1x, enabling software reuse.


  • Key Features
    • RL78 core, Max. 40MHz
    • 256KB Flash
    • 24KB RAM
    • 12-bit A/D converter
    • 8-bit D/A converter
    • Comparator with 4-fold multiplexer
    • Motor control: DC and BLDC - Field Oriented Control (FOC)
    • Application accelerator unit
    • Optimized DC/DC converter support
    • High temperature support: up to Ta = 150 °C
    • Super-low power consumption
  • State-of-the-Art Interfaces
    • 20 x PWM output
  • Support for FuSa and Security
    • Security module with EVITA-Light support
    • ISO 26262 ASIL B
  • Extensive ecosystem supporting the latest standards concerning tool, hardware, and software areas




  • Smart actuators
  • Sensors ECUs
  • Low-end body


High Temperature: Ta = 150°C Support: To order an RL78/F24 MCU with Ta = -40 °C to 150 °C specification, please provide the order code and the application temperature mission profile for verification to Renesas Support.

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Renesas Flash Programmer (Programming GUI)
Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
Programmer (Unit/SW) Renesas
E2 emulator [RTE0T00020KCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
Emulator Renesas
E2 emulator Lite [RTE0T0002LKCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
Emulator Renesas
Code Flash Libraries (Flash Self Programming Libraries)
Libraries for the reprogramming of code area flash memory, including EEPROM emulation libraries for the code areas of 78K-family products
Self Programming Library (Flash Library) Renesas
Data Flash Libraries
Libraries for the reprogramming of data flash memory, including EEPROM emulation libraries for the data areas of RL78-family products
Self Programming Library (Flash Library) Renesas
IAR Embedded Workbench for Renesas RL78
IAR Embedded Workbench provides extensive support for RL78 devices. IAR Embedded Workbench is a complete set of development tools with leading optimization technology for creating powerful automotive applications.
IDE and Coding Tool IAR Systems
Renesas IAR Embedded Workbench Device-Support-Packages
Renesas IAR Embedded Workbench Device-Support-Packages include all device-specific files to be used with the Embedded Workbench IDE.
IDE and Coding Tool Renesas
7 items

Sample Code

Boards & Kits

Boards & Kits


RL78/F24 Motor Control IP BlockSet

We are developing a Simulink model of the peripheral functions mounted in the target device.

Target peripherals:

  • Timer RDe (TRD)
  • 12-bit A/D Converter (AD)
  • Application Accelerator Unit (AAU)

Provide simulation blocks that reproduce hardware for motor/inverter control with high accuracy.

By combining this lockset and user model, it is possible to examine and check the operation of an actual system on the model.

For inquiries about this item, please contact the distributors or dealers.

Related documents:


Ultra-low Power Automotive Grade RL78/F2x MCUs

Explore the benefits that RL78/F2x MCUs bring to smart actuators and sensors.

Temperature Detection Solution Guide

Combine with an NTC thermistor to realize highly accurate high-temperature monitoring.

Thermistor information
Murata Manufacturing: Check the product information on Murata's website.