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.

Renesas PLP Badge


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


Type Title Date
Guide PDF 188 KB
Brochure PDF 11.44 MB 日本語
Brochure PDF 8.04 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
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AI Coding with Chat-GPT for RL78 Microcontroller (Arduino)

This video introduces how to do AI coding using ChatGPT and the RL78 Arduino-compatible board, including practical examples such as lighting up a 7Seg LED, rotating a motor, and sensing with a temperature and humidity sensor. Even beginners can easily experience AI coding!

Detailed step-by-step instructions:

AI Coding with Chat-GPT for RL78 Microcontroller (Arduino) | Renesas


Related products: RL78/G23-64p FPB

Related sources: Quick Start Guide page (GitHub)



1. Informational Purposes Only: This video serves as a general guide to using ChatGPT/GPT-4 to write code for an Arduino RL78 evaluation board. Renesas does not guarantee the accuracy or completeness of the content provided.

2. Third-Party Rights Infringement: Note that code generated using ChatGPT/GPT-4 might potentially infringe third-party intellectual property rights. Renesas makes no representations or warranties that the use of ChatGPT/GPT-4 will not violate any third-party rights. Users are urged to exercise due diligence to ensure compliance with applicable laws and third-party rights.

3. No Liability: In no event shall Renesas be liable for any damages, data loss, or other adverse consequences that may occur as a result of using the information, code, techniques, or tools demonstrated in this video. You may want to apply industry standard static and dynamic code assessments as AI code has been recognized to possibly contain malware fragments as well as deriving other unwanted outcomes.

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RL78/G23 Achieves World's Highest EEMBC ULPMark™-PP Score! Blog Post Jun 30, 2022
Brushless Motor Control Realized with RL78 Family Blog Post Apr 27, 2022
Why Not Connect to Amazon Web Services (AWS) with RL78? Blog Post May 14, 2021
Find the right MCU with your fingertip! Blog Post May 14, 2021
New MCU, RL78/G23, Satisfies the Latest IoT Edge Device Trends Blog Post Apr 15, 2021
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RL78 was certified by EEMBC ULPMark™-PP as the world's smallest power-consuming MCUs Blog Post Dec 24, 2019