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RL78 Family Low-Power 8 & 16-Bit Microcontrollers (MCUs)

RL78 8/16-bit microcontrollers (MCUs) greatly improve power efficiency with industry-leading low power consumption at 37.5μA/MHz consumption during normal operation and 0.355μA during clock operation. Built-in features such as a high-precision (±1%) high-speed on-chip oscillator, background operation data flash capable of 1 million rewrites, temperature sensor, and interface ports for multiple power supplies help reduce system costs and size.

Product Longevity Program (PLP)

Renesas offers the Product Longevity Program (PLP) to help customers select the most appropriate part for applications that require long life cycles.

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Renesas PLP Badge

Portfolio

RL78 Family PortfolioRL78/F15RL78/F14RL78/F13RL78/F12RL78/F24RL78/F23RL78/I1CRL78/I1BRL78/H1DRL78/I1ERL78/I1DRL78/I1ARL78/L1CRL78/L1ARL78/L13RL78/G22RL78/G23RL78/G12RL78/G13RL78/G13ARL78/G1ARL78/G1PRL78/G10RL78/G1DRL78/G11RL78/G15RL78/G16RL78/G1NRL78/G1CRL78/G1HRL78/G1MRL78/G24RL78/G1GRL78/G1FRL78/G14RL78/L12RL78/D1A

Product Selector: RL78 Low-Power 8 & 16-Bit MCUs

Explore our catalog of products through our parametric product selector tool. Compare specifications across various parameters to find the right part for your design.

Product Selector

Documentation

Type Title Date
Guide PDF 211 KB
Other PDF 1.64 MB 日本語
Product Advisory PDF 500 KB 日本語
Brochure PDF 12.68 MB 日本語
Brochure PDF 12.02 MB 日本語
Product Change Notice PDF 633 KB 日本語
Other PDF 3.19 MB 日本語 , 简体中文
7 items

Videos & Training

RL78 Arduino and e² studio Migration Guide

This video demonstrates how to import sketches using the RL78 Arduino library into e² studio, as well as how to build and debug them. By debugging in e² studio, you can obtain detailed information and verify the internal workings of the library, which is not possible with the Arduino IDE.

Related Resources

Video List

News & Blog Posts

Blog Post
Apr 1, 2025
Let's try running the RL78 family using the Arduino IDE!
Blog Post
Apr 1, 2025
New MCU, RL78/G23, Satisfies the Latest IoT Edge Device Trends
Blog Post
Apr 1, 2025
Brushless Motor Control Realized with RL78 Family
Blog Post
Sep 24, 2024
Ensuring Data Integrity in Cold Chain Management
Blog Post
Jan 10, 2024
16-Bit MCUs are Alive and Well
Blog Post
Dec 18, 2023
Evolution to IoT: Intelligence of DALI Lighting System
Blog Post
Dec 14, 2023
Robust & Reliable Motor Control for Industrial Domain
Blog Post
Nov 16, 2023
Energy-Efficient Motor Control for Home Appliances
Blog Post
Oct 30, 2023
Let's Create a Digital Angle Meter Using a Microcontroller
News
Sep 28, 2023
Renesas’ New 16-bit RL78/G24 MCU Delivers Top-Class Performance for Motor Control and Power Supply Control Systems
Blog Post
Sep 27, 2023
16-bit RL78/G24 MCU Delivers Performance Comparable to 32-bit MCUs
Blog Post
Sep 4, 2023
Low Voltage Motor Control with Enhanced Operation
Blog Post
Aug 10, 2023
Let's Make a Game Using a Microcontroller - Part 2
Blog Post
Jul 17, 2023
Motors are everywhere; drive them efficiently
Blog Post
Jun 29, 2023
DALI Lighting Control: A Sustainable Solution for the Future’s Green Buildings
Blog Post
Jun 28, 2023
Renesas Smallest Touch Microcontroller for 8-Bit MCU Market
Blog Post
May 30, 2023
Let's Make a Game Using a Microcontroller - Part 1
Blog Post
May 17, 2023
Commitment to Quality Ensures Reliability!
Blog Post
Apr 25, 2023
Start Developing with the RL78 - Essential for Microcomputer Beginners - Part 1
Blog Post
Apr 7, 2023
RL78/G22 Achieves World's Highest EEMBC ULPMark™-PP Score!
Blog Post
Mar 14, 2023
‘Tried & True’ – Renesas MCUs Are Made for You
Blog Post
Feb 16, 2023
New-Generation RL78/G22 MCU Delivers Inexpensive and Highly Functional Sensor Solutions
Blog Post
Feb 9, 2023
Smart Energy Metering for a Greener Future
News
Jan 12, 2023
Renesas Introduces Low-Power RL78/G15 MCU with the Smallest 8-pin Package Option Available within the RL78 Family
Blog Post
Oct 25, 2022
Would You Like to Use a LoRa®-Based Solution from Renesas to Develop IoT Applications with Low Power Consumption?
Blog Post
Jun 30, 2022
RL78/G23 Achieves World's Highest EEMBC ULPMark™-PP Score!
Blog Post
May 14, 2021
Why Not Connect to Amazon Web Services (AWS) with RL78?
Blog Post
May 13, 2021
Find the right MCU with your fingertip!
Blog Post
Apr 13, 2021
RL78 Family Releases a Brand-New Generation of RL78/G23 Group on Its 10th Anniversary
Blog Post
Jun 16, 2020
Accelerate Development Time with the RL78/G1P Fast Prototyping Board
Blog Post
Mar 3, 2020
RL78 Certified by EEMBC ULPMark-PP as the World's Smallest Power-Consuming MCUs

Tools & Resources