Features
- RL78/G1H
- CPU: RL78 core, Max. 32MHz
- RF frequency range: 863MHz to 928MHz
- Data rate: 2FSK/GFSK; up to 300kbps
- Voltage: 1.8V to 3.6V
- Package: 64-pin HVQFN
- Memory: SRAM Max. 48KB, Program Flash Max. 512KB
- Timer: 16-bit Timer (ch) x 9, Watchdog Timer (ch) x 1, 12-bit Interval Timer x 1 ch
- PWM:
- Analog function: 10-bit A/D Converter (ch) x 6
- On-chip oscillator frequency (MHz): High-speed: 32, 24, 16, 12, 8, 4, 1MHz
Low-speed: 15kHz - Others: RTC, power-on reset, low voltage detection
- RAA604S00
- RF frequency range: 863MHz to 928MHz
- Data rate: 2FSK/GFSK; up to 300kbps
- Timer: 32-bit timer function
- Voltage: 1.8V to 3.6V
- Package: 32-pin HVQFN (5×5) (0.5 mm pitch)
RL78/G1H Block Diagram
Description
The RL78/G1H microcontroller supports IEEE 802.15.4e/g and has the industry’s lowest power consumption - min. 5.8 mA (3.3 V) at stand-by mode in RF receipt. The balun circuit and filter circuit make the antenna circuit design easy. It enables fewer external parts to be used, reducing costs. The built-in hardware functions for IEEE 802.15.4e/g compliance and especially Wi-SUN can reduce CPU load and ease development. We also offer the RAA604S00 transceiver conforming to IEEE 802.15.4e/g that can be used in combination with a microcontroller.
Parameters
| Attributes | Value |
|---|---|
| Program Memory (KB) | 0, 256, 384, 512 |
| Data Flash (KB) | 0, 8 |
| RAM (KB) | 24, 32, 48 |
| Carrier Type | Bulk (Tray), Tape & Reel |
| Supply Voltage (V) | 1.8 - 3.6 |
| I/O Ports | 5, 41 |
| Temp. Range (°C) | Ta = -40 to +85 |
| Operating Freq (Max) (MHz) | 32 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 0, 2 |
| SPI (ch) | 1, 4 |
| I2C (#) | 0, 2 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | Sub-GHz |
| LIN (#) | 0 |
| 16-Bit Timer (ch) (#) | 0, 9 |
| 12-Bit A/D Converter (ch) | 0 |
| 10-Bit A/D Converter (ch) | 0, 6 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 0 |
| 10-Bit D/A Converter (ch) (#) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Segment LCD Controller | No |
| Security & Encryption | AES, TRNG, No |
Application Block Diagrams
 | Smart Streetlight A networked IoT streetlight with sensor‑based brightness control, real‑time data sharing, and remote management for safer, more energy‑efficient cities. |
 | Smart 1-Ph E-Meter Flexible energy metering system with wired and wireless communications, tamper detection, and isolation support. |
Additional Applications
- Home appliances
- Metering
- Sub-GHz wireless communication solutions
Complete Your Design
Explore complementary products to elevate your design
Renesas Boards & Kits
Y-G-HYBRID-PLC-RF
Active
Hybrid PLC and Sub-GHz Communication Evaluation Kit
This product is an evaluation kit for developing software and evaluating systems compatible with Renesas' Power Line Communication (PLC) modem IC R9A06G037 and Renesas’ Sub-GHz wireless IC RAA604S00. This kit can be configured to support many configurations, PLC only R9A06G037, Hybrid (PLC & RF)... Read More
Recommended Documents:
Partner Starter Kits
| Board | Part Number | Buy |
|---|---|---|
| RL78/G1H Low Power Single-Chip Solution* | TK-RLG1H+SB2 | Chip One Stop, Amazon Japan |
| RX651+RAA604S00 High-Performance Solution* | MB-RX604S-02(RX651) | Chip One Stop, Amazon Japan |
| RL78/G14+RAA604S00 Low Power Solution* | RL604S Stick | Chip One Stop, Amazon Japan |
*Developed, manufactured, and sold by Tessera Technology. For details, please contact Tessera Technology.
Loading
Filters
Software & Tools
Filter by Type
Filter by Provider
Sample Code
Filter by Application
Filter by Function
Filter by Compiler
Filter by IDE
Partner Solutions
- IDE and Coding ToolRenesas 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 ToolEclipse-based Renesas integrated development environment (IDE).
- IDE and Coding ToolIAR 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.Provider: IAR Systems
- IDE and Coding ToolRenesas IAR Embedded Workbench Device-Support-Packages include all device-specific files to be used with the Embedded Workbench IDE.
- Compiler/AssemblerC Compiler Package for RL78 Family [IDE: CS+, e² studio]
- Compiler/AssemblerC Compiler Package for the RL78 and 78K Families [IDE: CS+]
- Solution ToolkitDevelopment 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 ToolkitRound-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardware
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RH850, RL78, RX, V850, 78K0R, 78K0, R8C]
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. For RX600 or RX700 Series MCU, trace functions and Real-time RAM monitor functions available. For MCUs other than RX600 or RX700, the available debugging function corresponds to that of E2 Emulator Lite. [Support MCU/MPU: RX, RL78, RH850, V850, 78K0R, 78K0, R8C]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Renesas Flash Programmer or Flash Development Toolkit] [Support MCU/MPU and devices: RX, RL78, RH850, V850, 78K0R, 78K0, R8C, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Renesas Flash Programmer] [Support MCU/MPU and devices: RE, RX, RL78, RH850, RISC-V MCU, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Renesas Flash Programmer] [Support MCU/MPU and devices: RX, RL78, RISC-V MCU, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver]
No Results Found.
Check Spelling
Make sure all keywords are spelled correctly.
Make sure all keywords are spelled correctly.
Adjust Keywords
Try fewer, different, or more general terms to vary your search.
Try fewer, different, or more general terms to vary your search.
Review Filters
If you have filters applied, consider deselecting some to broaden your results.
If you have filters applied, consider deselecting some to broaden your results.
Need help?
- Search our extensive knowledgebase, designed to help customers with their FAQs.
- Get help from our expert Renesas technical staff and community on our support forums.
- IDE and Coding ToolRenesas 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 ToolEclipse-based Renesas integrated development environment (IDE).
- IDE and Coding ToolIAR 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.Provider: IAR Systems
- IDE and Coding ToolRenesas IAR Embedded Workbench Device-Support-Packages include all device-specific files to be used with the Embedded Workbench IDE.
- Compiler/AssemblerC Compiler Package for RL78 Family [IDE: CS+, e² studio]View More (46)
Software & Tools (46)
- Sample CodeProvides information for deploying FFT (Fast Fourier Transform) library.
- Sample CodePresents the specifications for a Digital Signal Controller (DSC) library function for the Renesas RL78, which includes generic specifications, detailed specifications for filter algorithm kernels, and guidelines for the DSC Library API.
- View More (32)
Sample Code (32)
No Results Found.
Check Spelling
Make sure all keywords are spelled correctly.
Make sure all keywords are spelled correctly.
Adjust Keywords
Try fewer, different, or more general terms to vary your search.
Try fewer, different, or more general terms to vary your search.
Review Filters
If you have filters applied, consider deselecting some to broaden your results.
If you have filters applied, consider deselecting some to broaden your results.
Need help?
- Search our extensive knowledgebase, designed to help customers with their FAQs.
- Get help from our expert Renesas technical staff and community on our support forums.
Development ToolUniversal third-party programmers support a wide range of Renesas programmable devices across both off-board and on-board programming modes.Provided By: Elnec s.r.o.- Development ToolProvides high-volume automated programming systems engineered for factory-scale production, enabling efficient handling of a wide range of integrated circuit (IC) devices. Optimized for microcontrollers (MCUs) and flash memory, the systems support tube, tape, and tray input/output configurations for flexible manufacturing integration. Advanced auto-teach alignment capabilities ...Provided By: DediProg Technology Co., Ltd.
- Development ToolThe AH-480 automated programming system is built around a patented rotary robotic arm equipped with dual-sided vacuum nozzles, enabling high-speed, high-precision IC pick-and-place operations. The system integrates 16 units of the latest LEAP universal programmers to deliver stable, high-throughput programming performance. Designed for ...Provided By: LEAP ELECTRONIC CO., LTD.
- Development ToolProvides universal device programming systems combining algorithms, process-control software, and socket modules for Renesas microcontroller production. Enables high-volume programming across the RA, RX, RL78, RH850, RZ, R8C, V850, M16C, H8, H8SX, H8S, SH, 78K and Synergy families using 9th- and 10th-generation universal site technology. Supports new socket ...Provided By: BPM Microsystems
- Development ToolBSMART delivers a versatile, portable interfacing solution for seamless operation on silicon devices anytime and anywhere. Its compact, pocket-sized design supports both laboratory and on-site interventions. Managed via Ethernet LAN, USB-UART, or Bluetooth® through the BSMART App, it interfaces with microprocessors and serial memories using standard ...Provided By: SMH Technologies S.r.l.View More (44)
Partner Solutions (44)
Wireless Doorbell Reference Design
The Wireless Doorbell reference design uses sub-GHz wireless communication to notify a remote receiver when the doorbell is pressed. The transmitter and receiver both have a built-in RL78/G1H sub-GHz wireless communication module, RL78/G11 for control. When the transmitter button is pressed, its... Read More
Recommended Documents:
Support Communities
-
Enable WDT RL78/G1H
Hi, I'm working with RL78/G1H using an example code from wi-sun_fan_lib and IAR. I need help how to enable the WDT for this project. I read about option bytes but still not figure out how to put this in the IAR or code. I ...
Mar 17, 2021 -
Configure UART to receive data with inverted output level (RL78/G1H)
Hi, I need to configure the UART RxD1 of RL78/G1H to receive data with inverted output level. I could only configure to transmit data with inverted output level. To do this I follow the chapter "14.3.13 Serial output level register m (SOLm)" of document "R01UH0575EJ0130 Rev ...
Apr 29, 2021 -
Error reading one byte from SPI using CS21
Hi, I need to communicate with a w25qxx SPI flash memory using CSI21 of RL78/G1H. I generate the code with AP4 and it works fine when I read two or more bytes. But if I try to read only one byte, the dummy byte I sent on R ...
Oct 9, 2021
Knowledge Base
-
RL78 Family: Is it possible to initialize the on-chip debug security ID?
... G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1A, RL78/G1C, RL78/G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M, RL78/G1N, RL78/G1P, RL78/G22, RL78/G23, RL78/G24, RL78/H1D, RL78 ...
Aug 1, 2025 -
RL78 Family: Relationship between A/D Conversion Resolution and A/D Conversion Time
... G13, RL78/G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1C, RL78/G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M, RL78/G1N, RL78/G22, RL78/H1D, RL78/I1A, RL78/L12, RL78/L13 ✓ ...
Nov 12, 2024 -
RL78 Family: Why can't the maximum transfer rate be used in master mode with Simplified SPI (CSI) in Smart Configurator?
Please refer to the "Electrical Characteristics" section in the user’s manual. The transfer rate for Simplified SPI (CSI) communication depends on the operating voltage range. For example, in the RL78/G23, when HS mode is selected and EVDD is set between 1.8V and 5.5V, the transfer ...
Sep 22, 2025
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Knowledge Base
Browse our knowledge base for helpful articles, FAQs, and other useful resources.
ROM Ordering
Embed your custom code into Renesas masked MCUs during manufacturing for tailored device functionality.
