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RL78/G24

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Product Longevity: 2037

General-Purpose Microcontrollers with Highest RL78 Processing Performance and Enhanced Analog and Timers

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Overview

The RL78/G24 microcontroller has the highest processing performance of the RL78 family of MCUs, with a CPU operating frequency up to 48 MHz and a flexible application accelerator (FAA). In addition, the enhanced analog functions and an abundance of timers make it a good fit for motor control, power supply, and lighting applications. The FAA is a co-processor dedicated to arithmetic operations, and can be operated independently of the CPU, delivering higher processing power.

A rich development environment is also provided for the RL78/G24, including an evaluation board (Fast Prototyping Board), where simply connecting a USB cable enables program writing/debugging without additional tools, and a kit specialized for initial evaluation of solutions for motors, power supplies, and lighting, and Smart Configurator, which facilitates design using GUI. It is also compatible with the existing RL78 Family and can be a seamless replacement, making it suitable for a wide range of applications from home appliances and consumer electronics to industrial equipment.

RL78/G24 Block Diagram
RL78/G24 Block Diagram
  • CPU: RL78 core, Max. 48MHz, FAA core
  • Voltage: 1.6V to 5.5V
  • Package: 20-pin to 64-pin
  • Memory: Program Flash: 64/128KB, SRAM 12KB, Data Flash 4KB
  • Operating temperature range:​ up to 125°C
  • Timer: 16-bit Timer (ch) x 12, Watchdog Timer (ch) x 1, 32-bit Interval Timer x 1 ch
  • PWM: PWM Output x 14
  • Analog function: 8/10/12-bit A/D Converter (ch) x 23, 8/10-bit D/A - Converter (ch) x 2~3, Comparator x 4, Programmable gain amplifier (PGA) x 1
  • On-chip Oscillator Freq. (MHz):
    • High-Speed: up to 64MHz
    • Middle-Speed: up to 4MHz
    • Low-speed: 32.768kHz
  • Event link controller
  • Others: RTC, Power-On Reset, Low Voltage Detection
  • Packages: SSOP, LQFP, LFQFP, HWQFN, WFLGA

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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Resources

Support Communities

  1. RL78/G24- TRDIOB0 and TRDIOD0 used as EXTENTED COMPLEMENTARY PWM, how to set both them output low at same time?

    RL78/G24- TRDIOB0 and TRDIOD0 used as  EXTENTED COMPLEMENTARY PWM, how to set both them output low at same time? i use these 2 PWM output control a half bridge conveter, and i need force them all off when the pwm duty is too small. how can i realize ...

    Feb 25, 2025
  2. RL78/G24 FAA assembler command list explenation

    Hello, I am trying to use the FAA in RL78/G24 to collect the data from ADC, unfortunetly the only document showing the assembler command list does not explan how the commands are are working.  https://www.renesas.com/en/document/mat/dspasm ...

    Feb 13, 2025
  3. Smart Configurator bug with G24 ports

    ... new boards I tried the configurator. It configures correctly on Linux but not on the mac. The device I am looking at using is the RL78/G24 32 pins 128k flash, same size as my current RL78/G14. I would like to flush windows and move my RL78 ...

    Apr 8, 2024
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FAQs

  1. RL78/G24 position, target application

    Last Updated: 09/28/2023 Question: How is the RL78/G24 positioned within the RL78 family? And what is the target application? Answer: The RL78/G24 is positioned as a high-function, high-performance product in the RL78 family, and like the RL78/G14, RL78 ...

    Sep 28, 2023
  2. Operating frequency of RL78/G24

    Last Updated: 09/28/2023 Question: What is the operating frequency of the RL78/G24? Answer: The maximum operating frequency of the RL78/G24 is 48MHz.This is the fastest operation in the history of RL78 family microcontrollers. Suitable Products RL78/G24   日本語

    Sep 28, 2023
  3. RL78 Family: Reset signal generated by the power-on reset circuit (POR)

    ... G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M,RL78/G1N, RL78/G1P, RL78/G22, RL78/G23, RL78/G24, RL78/H1D, RL78/I1A, RL78/I1B, RL78/I1C, RL78/I1D, RL78/I1E, RL78/L12, RL78 ...

    Apr 28, 2025
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Videos & Training

This video introduces a library that enables the FAA to function as a sub-processor, performing high-speed arithmetic operations on the RL78/G24.

Chapter's Title

00:00 Opening
00:10 FAA overview
00:57 Digital Filter Library
01:16 FFT Library
01:34 SHA Library
01:54 How to download the FAA library
02:07 Application Note

Related Resources

News & Blog Posts

Blog Post
Dec 18, 2023
Evolution to IoT: Intelligence of DALI Lighting System
Blog Post
Sep 27, 2023
16-bit RL78/G24 MCU Delivers Performance Comparable to 32-bit MCUs