Features
- CPU: RL78 core, Max. 24MHz
- Voltage: 1.6V to 5.5V
- Package: 16 to 24-pin HWQFN, 10 to 20-pin LSSOP, 16-pin SSOP, 25-pin WFLGA
- Memory: SRAM Max. 1.5KB, Program Flash Max. 16KB
- Timer: 16-bit Timer (ch) x 5, 8-bit Timer (ch) x 2, Watchdog Timer (ch) x 1, 12-bit Interval Timer x 1 ch
- PWM: PWM Output x 4
- Analog function: 10-bit A/D Converter (ch) x 11, 8-bit D/A Converter (ch) x 2
- On-chip Oscillator Freq. (MHz): High-Speed: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48MHz
Middle-Speed: 1, 2, 4MHz
Low-speed: 15kHz - Others: Power-On Reset, Low Voltage Detection
Description
The RL78/G11 microcontroller line-up concept is based on small packages like 10 to 25pin, in small 16KB flash memory and rich analog peripherals such as A/D converters, D/A converters, comparators and PGA and these are configurable as PGA+ADC+VBGR, PGA+CMP, CMP+DAC/VBGR, or PGA+CMP+DAC/VBGR. Using the smart features like DTC and ELC a lot of peripherals can be connected internally to reduce CPU workload and can save overall power consumption. It also supports very low power operation (100 uA @ 1 MHz ) and a high speed 4µs wake up. Available in small 3x3mm² WFLGA , 3x3mm² HWQFN and standard 20pin LSSOP, this MCU line is suitable for sensor application, Lighting/power sources and many small appliances.
Parameters
| Attributes | Value |
|---|---|
| Program Memory (KB) | 16 |
| Data Flash (KB) | 2 |
| RAM (KB) | 1.5 |
| Carrier Type | Full Carton (Tray), Full Tray (Tray), Magazine, Tape & Reel |
| Supply Voltage (V) | 1.6 - 5.5 |
| I/O Ports | 7, 13, 17, 21 |
| Temp. Range (°C) | Ta = -40 to +85, Ta = -40 to +105 |
| Operating Freq (Max) (MHz) | 24 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 1, 2 |
| SPI (ch) | 1, 2, 3, 4 |
| I2C (#) | 0, 2, 5, 6 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| LIN (#) | 0 |
| 16-Bit Timer (ch) (#) | 5 |
| 12-Bit A/D Converter (ch) | 0 |
| 10-Bit A/D Converter (ch) | 3, 8, 10, 11 |
| 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) | 1, 2 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Segment LCD Controller | No |
| Security & Encryption | No |
Application Block Diagrams
 | Automated Meter Reader (AMR) Retrofit Module AMR retrofit module offers cost-efficient metrology, flexible MCU design, and extended battery life. |
Additional Applications
- Office
- Home Appliance
- Healthcare
- Security
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RL78/G11 Promotion Board
The Renesas Promotion Board with RL78/G11 MCU is a small board ideal for prototyping and evaluation. A compact board measuring 57mm × 10mm integrates the E2 Emulator Lite debugger and programmer function, a step-up DC/DC converter, and the RL78/G11 MCU (25-pin LGA package). In addition, another... Read More
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Partner Boards & Kits
RL Family Microcontroller Board
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- 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]
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- 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 (30)
Software & Tools (30)
- 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.
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Sample Code (55)
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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.
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- 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)
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Wireless charging is a technology that uses the principle of electromagnetic induction to transfer electrical energy between two coils. It has been installed as one of the popular functions in mobile devices such as smartphones in recent years.
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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
Smart Moisture Sensor Reference Design
The Smart Moisture Sensor reference design uses the RL78/G11 MCU's moisture sensor to measure the conditions of soil and transfer the data to a smartphone app via an RL78/G1D Bluetooth Low Energy (LE) module which can be graphically shown. For example, the app can provide a moisture vs.... Read More
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Support Communities
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RL78 / G11 LSSOP
Hi Guys Hope someone could help me in pcb mount pad for LSSOP? Is TSSOP and LSSOP same footprint? but the seated height i think is different. But when it comes to land size could I use TSSOP recommended land size? thank you and best regards
Sep 4, 2018 -
SHA-256 library (RL78/G11)
Hi. I work with the RL78/G11 and I need to calculate HASH in my application. I found that Renesas has personal implementation of the SHA-256 (https://www.renesas.com/eu/en/software-tool/crypto-library). But, I read that this library ...
Nov 16, 2023 -
data flash in RL78/G11
i am trying to store one bit of data on to the data_flash memory of the g11 mcu this was the code i used everytime my ide hangs and becomes unresponsive #include "r_cg_macrodriver.h" #include "r_cg_cgc.h" #include "r_cg_pfdl.h ...
Jul 10, 2025
Knowledge Base
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RL78 Family: Is it possible to initialize the on-chip debug security ID?
... Products RL78/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 ...
Aug 1, 2025 -
RL78 Family: Relationship between A/D Conversion Resolution and A/D Conversion Time
... RL78/F24, RL78/L1AGroup E: RL78/D1A, RL78/F12, RL78/F13, RL78/F14, RL78/F15, RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1C, RL78 ...
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
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