Features
- Key Features
- RL78 core, Max. 40MHz
- 128KB Flash
- 12KB RAM
- 12-bit A/D converter
- Motor control: DC and BLDC - Field Oriented Control
- Application accelerator unit
- Optimized DC/DC converter support
- High-temperature support: up to Ta = 150°C
- Super low-power consumption
- State-of-the-Art Interfaces
- LIN, UART, SPI, I2C, SENT
- 16 x PWM output
- Support for FuSa and Security
- Security module with EVITA-Light support
- ISO 26262 ASIL B
- AUTOSAR MCAL
- QINeS-Lite (manufactured by FPT Automotive): AUTOSAR MCAL (ASIL B) support
- Extensive ecosystem supporting the latest standards concerning tools, hardware and software
Description
The RL78/F23 next-generation super low-power automotive microcontrollers are ideal for realizing future highly reliable smart actuators and sensors, as well as low-end body ECUs. As an innovative prolongation of the known RL78/F1x MCUs, the RL78/F23 can cover prospective market requirements. With its increased CPU performance, high-temperature capability, and enhanced peripheral feature set, RL78/F23 is a perfect fit for various applications.
RL78/F2x products are designed according to ISO 26262 and provide functional safety (FuSa) support up to ASIL B. Additionally, partner-provided AUTOSAR MCAL (ASIL B) is also available. RL78/F2x products support up to the EVITA-Light security standard or more. An AES crypto module can handle key lengths of up to 256 bits and supports secure boot and authentication. To further boost the calculation performance for BLDC (FOC) motor control and DC/DC control systems, RL78/F2x is equipped with the unique application accelerator IP, to off-load complex trigonometric and arithmetic processing.
RL78/F2x MCUs are fully hard- and software upwards compatible to RL78/F1x, enabling software reuse.
Parameters
| Attributes | Value |
|---|---|
| Program Memory (KB) | 128 |
| Data Flash (KB) | 8 |
| RAM (KB) | 12 |
| Carrier Type | Full Carton (Tray), Tape & Reel |
| Supply Voltage (V) | 2.7 - 5.5 |
| I/O Ports | 25, 38, 52, 68 |
| Temp. Range (°C) | Ta = -40 to +105, Ta = -40 to +125, Ta = -40 to +150 |
| Operating Freq (Max) (MHz) | 40 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 3 |
| SPI (ch) | 3, 4 |
| I2C (#) | 4, 5 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| LIN (#) | 1 |
| 16-Bit Timer (ch) (#) | 15 |
| 12-Bit A/D Converter (ch) | 10, 19, 24, 25 |
| 10-Bit A/D Converter (ch) | 0 |
| 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 | Secure Boot, AES, TRNG |
Application Block Diagrams
 | 12V Motor Controller Compact 12V BLDC motor controller with FOC or trapezoidal control for fast, efficient development. |
 | Remote Sensing with Inductive Position Sensor & CAN/LIN Remote sensing system boosts data security, enables ECU centralization, and reduces wiring in vehicles. |
Additional Applications
- Smart actuators
- Sensors ECUs
- Low-end body
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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]
- Solution ToolkitRound-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardware
- Solution ToolkitRL78 Smart Configurator is a utility for combining software in ways that meet your needs. It simplifies the embedding of Renesas drivers in your systems through supports for importing middleware and drivers and configuring pins.
- 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]
- Programmer (Unit/SW)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)Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, DA148xx, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
- SimulatorSimulator for RL78 Family, 78K0R and 78K0 [Support IDE: CS+] (Note: This product is included in the Compiler Package and is not available separately.)
- SimulatorSimulator for RL78 Family [Support IDE: e² studio] (Note: This product is included in the Renesas IDE "e² studio" and is not available separately.)
- Model-Based DevelopmentSimulink blockset that enables users to simulate behavior and generate code for peripheral functions on microcontrollers.
- Model-Based DevelopmentProvides simulation blocks that reproduce hardware for motor/inverter control with high accuracy.
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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 (18)
Software & Tools (18)
- 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.
- Sample CodeThis application note describes how to write the program to the internal flash memory of the RL78 MCUs that supports the RL78 Protocol D by the Raspberry Pi 4 Model B+. Serial programming of the RL78 Protocol D is used for writing. The Raspberry Pi is used as a programmer; the program rewriting file is executed to send the rewrite data for the write operation.
- Sample CodeThis application note describes how to write the program to the internal flash memory of the RL78 MCUs that supports the RL78 Protocol D. Serial programming of the RL78 Protocol D is used for writing. There are two modes: Online Mode, in which the host PC sends commands to perform rewriting, and Offline Mode, in which the data to be rewritten is downloaded from the host PC in advance and rewriting is triggered by pressing a switch.View More (17)
Sample Code (17)
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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.
- 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 (47)
Partner Solutions (47)
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Questions about Serial Programming Interface in RL78/F23
... F23,F24 hardware specifications) 1. The reset and TOOL0 data (0x00 or 0x3A) shown in the figure are transmitted from the debugging tool(e2light) to RL78/F23. 1-1 If 1 is correct, do I choose whether to use Single-line or Dual-line in PCtool (e2light)? 2. If ...
Feb 11, 2025 -
about RFD & FSL lib in RL78/F23
Hello. Renesas team Is FSL lib available in RL78/F23? The Flash Self-programming Library Type T01 document title says RL78 Series, but I would like to check if it is also supported in F23. Renesas Flash Driver RL78 Type 02 V1.00 for RL78 / F2x is described ...
Aug 19, 2024 -
PLL Clock of RL78/F23
... use Fpll as the source of the clock, is that right?I referred to Figure 5-1 (Block Diagram of Clock Generator) of spec document(RL78/F23 User's Manual(R01UH0944Ej0100)). Is it correct that the rest of the peripherals seem to use the same clock source as the ...
Mar 12, 2025
Knowledge Base
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RL78 Family: Is it possible to initialize the on-chip debug security ID?
... shared with the on-chip debug security ID. Suitable 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 ...
Aug 1, 2025 -
RL78 Family: Relationship between A/D Conversion Resolution and A/D Conversion Time
... I1C, RL78/I1EGroup B: RL78/G23, RL78/G24Group C: RL78/G1A, RL78/G1P, RL78/I1D, RL78/L1CGroup D: RL78/F23, RL78/F24, RL78/L1AGroup E: RL78/D1A, RL78/F12, RL78/F13, RL78/F14, RL78/F15 ...
Nov 12, 2024 -
RL78 Family: How do you pick the right pull-up resistors for I²C communication?
... register n (PERn), and then set it (1). Suitable Products RL78/F12, RL78/F13, RL78/F14, RL78/F15, RL78/F22, RL78/F23, RL78/F24, RL78/F25, RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G13A, RL78 ...
Dec 16, 2025
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FPT Software Co., Ltd.
Founded in 2005, FPT Automotive employs nearly 5,000 engineers to advance SDV technology with a focus on safety and seamless integration. MaaZ-Lite is a streamlined and cost-effective version of MaaZ that supports standardized automotive software development with full AUTOSAR Classic compliance. FPT Automotive is a partner of SCSK supporting the global markets outside Japan.
SCSK Corporation
SCSK provides the QINeS-Lite software platform to maximize the performance and ensure stable operation of RL78/F24 and its sequel products. QINeS-Lite is developed based on 10 years of experience since SCSK launched its first AUTOSAR-compatible "QINeS-BSW" in Japan with the consideration of future market trends to meet the needs of the Japan market.
Murata Manufacturing Co., Ltd.
Temperature detection solution: Combine with an NTC thermistor for precise high-temperature monitoring.
