Overview
Description
RL78/G12 microcontrollers balance the industry's lowest level of consumption current (CPU: 63 μA/MHz, standby (STOP): 230 nA) and a high performance of 32.4 DMIPS (24 MHz). They have an on-chip oscillator, data flash, A/D converter, and more. Built-in safety features (function that detects illegal operation of hardware) enable support for the household appliance safety standard (IEC/UL 60730). With a 20 to 30-pin compact package lineup, these microcontrollers are perfect for sub-microcontrollers of small appliances and consumer and industrial equipment.
Features
- CPU: RL78 core, Max. 24MHz
- Voltage: 1.8V to 5.5V
- Package: 24-pin HWQFN, 20 to 30-pin LSSOP
- Memory: SRAM Max. 2KB, Program Flash Max. 16KB
- Timer: 16-bit Timer (ch) x 8, 8-bit Timer (ch) x 4, Watchdog Timer (ch) x 1, 12-bit Interval Timer x 1 ch
- PWM: PWM Output x 7
- Analog function: 10-bit A/D Converter (ch) x 8
- On-chip Oscillator Freq. (MHz): High-Speed: 1, 4, 8, 12, 16, 24MHz
Low-speed: 15kHz - Others: Power-On Reset, Low Voltage Detection
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| FFT Library Fast Fourier Transform (FFT) Library
|
DSP / FFT | Renesas |
| Crypto Library Robust encode library to ensure security for all types of system developments
|
Security / Crypto | Renesas |
| Sound Playback/Compression System [M3S-S2-Tiny] for RL78 Family Sound playback system for RL78 Family
|
Sound / Voice | Renesas |
| AP4, Applilet Peripheral I/O driver generator compatible with third-party compilers and GNU compiler (for RZ, V850, RX, RL78, and 78K)
|
Code Generator | Renesas |
| Code Generator Plug-in Automatic driver generation tool for internal peripheral I/O modules through GUI settings [Standard features for Renesas IDE "e² studio" and CS+] [Support MCU/MPU: RL78, V850, 78K, RX]
|
Code Generator | Renesas |
| C Compiler Package for RL78 Family [CC-RL] C Compiler Package for RL78 Family [IDE: CS+, e² studio]
|
Compiler/Assembler | 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 |
| PG-FP6 Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C]
|
Programmer (Unit/SW) | Renesas |
| Renesas Flash Programmer (Programming GUI) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
|
Programmer (Unit/SW) | 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 |
| Simulator for e² studio of RL78 Family Simulator for RL78 Family [Support IDE: e² studio] (Note: This product is included in the Renesas IDE "e² studio" and is not available separately.)
|
Simulator | Renesas |
| RL78 Web Simulator Right online tools to support initial evaluation of the low power consumption RL78 Family. Lineup: MCU Simulator Online and Current Consumption Calculator. Free of charge.
|
Simulator | Renesas |
| QE for Current Consumption: A Dedicated Tool for Current Measurement Development assistance tool helps to shorten the times taken in operations for the tuning of currents drawn. [Standard item in the "e² studio" and CS+ (CS+ for CC only) IDEs] [Support MCU/MPU: RX, RL78]
|
Solution Toolkit | Renesas |
| CS+ Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0]
(Note: CS+ is not generally promoted to U.S. and European customers.)
(Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”)
|
IDE and Coding Tool | Renesas |
| e² studio - information for RL78 Family Eclipse-based Renesas integrated development environment (IDE).
|
IDE and Coding Tool | Renesas |
| SPI/QSPI Serial Flash Memory, QSPI Serial Phase Change Memory Driver Device Driver for SPI and QSPI Serial Flash Memory and QSPI Serial Phase Change Memory
|
Serial Memory | 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 |
| Reality AI Utilities Round-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardware
|
Solution Toolkit | Renesas |
|
21 items
|
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Sample Code
Boards & Kits
Evaluation
QB-R5F1026A-TB
Active
RL78/G12 (R5F1026AASP) Target Board
As a CPU board usable in connection with the on-chip debugging emulator E2, E2 Lite, E1(discontinued product), this product achieves simple and easy evaluation of the target MCU.
Information on the discontinuation of E1 emulator production
We have already discontinued production of the E1...
Demonstration
RCTIMING-DEMO
Active
Renesas Timing Product Demo Kit
RCTIMING-DEMO is a Renesas products combination kit. The kit includes a Renesas RL78 MCU, DA14531MOD, Linear Regulators (LDO), RTC (1338-31DVG) and programmable clock generator VersaClock 7 (VC7) to implement a demo kit to support programming clock generator through laptop or smartphone and...
Recommended Documents:
Development
EU070-SMOKEDETPOCZ
Active
Household Smoke Detector Development Board
A photoelectric smoke detector consists of an IR photodiode (sender) and a phototransistor (receiver/detector) arranged inside a so-called smoke chamber. Inside this chamber, air is flowing, and this air may contain smoke from a nearby (upcoming) fire, etc.
The construction of the smoke chamber...
Recommended Documents:
Test This Board Remotely
Available on Lab on the Cloud, use our PC-based GUI to instantly start configuring and testing designs in our virtual lab, no physical board needed.
Development
EU096-PWRSEQPOCZ
Active
Flexible MCU-based 6-Channel Power Sequencer Development Kit
The Flexible 6-Channel Power Sequencer is based on Renesas' general-purpose RL78/G12 microcontroller and six discrete DC/DC regulators with integrated power MOSFETs. For ease of use, a low Iq LDO with fixed output voltage for microcontroller supply is also utilized. The reference design allows...
Recommended Documents:
Evaluation
CN328-EVK
Active
100W USB Power Delivery Adaptor with Multi-Output Evaluation Kit
The CN328-EVK evaluation kit provides a total power delivery (PD) adaptor solution, including boost power factor correction (PFC), quasi-resonant (QR) flyback controller power, DC/DC buck, LDO, MOSFET, and MCU.
Test This Board Remotely
Available on Lab on the Cloud, use our PC-based GUI to instantly start configuring and testing designs in our virtual lab, no physical board needed.
Models
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.
Product Options
Applied Filters:
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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RL78/G12 Self-Programming (Received Data via IIC) CC-RL Sample code
Dear Sir, I need sample code for RL78/G12 Self-Programming (Received Data via IIC) CC-RL, i downloaded from below link but the sample project seems empty with no source code. https://www.renesas.com/sg/en/document/scd/rl78g12-self ...
Dec 7, 2021 -
Problem Using Dataflash in RL78/G12 CC-RL Project
Hello, I'm just learning the RL78/G12 R5F10278 processor with E2Studio. When I created an RL78/G12 CC-RL project for the first time, I encountered the following error while uploading my code. I filled in the yellow fields shown in the picture below and my problem ...
Mar 4, 2024 -
[RL78/G12 R5F1026A] Memory Address Problem
Hi to the community, I am trying to debug a simple program, it doesn't have any modification(it's the generated code by default(configuring the micro and the board)) and was created by the "Code Generator". It compiles perfectly, but when i am loading it on the board ...
Jun 28, 2018
FAQs
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RL78 Family: Reset signal generated by the power-on reset circuit (POR)
... D1A, RL78/F12, RL78/F13, RL78/F14, RL78/F15, RL78/F23, RL78/F24, RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1A, RL78/G1C, RL78 ...
Apr 28, 2025 -
Compatibility of RL78/G15 with existing products
RL78/G15 (10-pin, 16-pin) has pin compatibility with RL78/G10 (10-pin, 16-pin). The same functions are assigned to the same pins. RL78/G15 (20-pin) is essentially pin compatible with RL78/G12 (20-pin), except for three pins, namely, ANI, TOOLTxD, and ...
Jan 12, 2023 -
Reference Materials for Migration from 78K0/Kx2 to RL78
We have the following reference materials available. - How to replace a program for 78K0 with a program for RL78 Replacement Guide for 78K0 Family to RL78 Family (CcnvCA78K0) Software for converting a C source file for CA78K0 and CA78K0R to a C source file for CC-RL CcnvCA78K0 C Source ...
Dec 21, 2020