RL78, RX, RA and Automotive MCUs

Renesas ships more than 3.5 billion MCUs per year, with approximately 50% in Automotive and roughly 20 Renesas MCUs in each automobile, while the other 50% are in other key markets like Industrial, IoT, and Infrastructure. Renesas has the broadest portfolio of 8-, 16- and 32-bit devices, and is the #1 supplier in 16- and 32-bit MCUs. We ensure supply continuity to our customers by deploying dual source manufacturing for the majority of our MCUs. Renesas has been a trusted, reliable supplier delivering billions of safe and secure MCUs for decades.

Available in a wide array of memory and package options, Renesas microcontrollers and microprocessors are fast, highly reliable, low in cost, and deliver eco-friendly performance. Incorporating the latest process technology to enable large-capacity flash memory integration, our MCUs and MPUs are used in a wide array of applications, including demanding fields that require high quality and high reliability.

Renesas offers the broadest portfolio of ultra-low-power to high-performance MCUs in the market to meet the needs of smart embedded electronics. Renesas MCUs are designed to enable the highest levels of safety and security by offering dedicated hardware features combined with certified software libraries to safeguard the availability, integrity, and confidentiality of any solution.

All Renesas MCUs are designed to support ultimate flexibility for designers with complete functional and pin-to-pin compatibility across device families. This enables our customers to quickly diversify and grow their application footprint while maintaining their platform concept with maximum software and hardware reuse.

Renesas Tried and True

Renesas MCUs – Tried and True, Made for You and Your Next Design

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. Participating RA Family products are available for up to 15 years.

Product Longevity Program (PLP)

RL78 Low Power 8 & 16-bit MCUs

RL78 8/16-bit microcontrollers (MCUs) greatly improve power efficiency with industry-leading low power consumption at 41μA/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.

True Low Power

The RL78 microcontrollers (MCUs) offer three low power modes that maximize battery life by disabling idle CPU features.

View allRL78 family microcontrollers brochure

RL78 quick solutions video


Renesas true low power

SNOOZE mode sequencer (Only RL78/G23 has this function. (as of 2021))

This function is not need to wake up CPU for receiving data.

The unique SNOOZE Mode allows some peripherals, i.e., ADC and UART operation while in standby modes.

The RL78/G23 has the SNOOZE mode sequencer which can operate most of peripheral functions while in SNOOZE mode.

The SNOOZE mode sequencer realizes even lower power consumption for applications.


  • Standby modes. The RL78 MCUs include HALT and STOP modes.
  • Low power consumption values.
  • Broad scalability. RL78 MCUs Offer an unprecedented lineup on over 1000 devices.
  • Excellent pin compatibility.
  • Peripheral I/O Re-direction (PIOR) capability remaps functions to alternate ports.
  • High performance
  • RL78 microcontrollers with CPU core employing three-stage pipeline and Harvard architecture.
  • System cost reduction
  • High quality and safety


Featured RL78 MCU

The RL78/G15 is a general-purpose microcontroller with a 16MHz operating frequency. There is a wide lineup available, including the smallest 8-pin package in the RL78 Family, and support for a wide range of operating ambient temperatures from -40°C to 125°C.


  • 100W Adaptor with power delivery & wireless charger
  • 100W USB Power Delivery (PD) adaptor with multi-output
  • General purpose
  • Consumer applications
  • Home appliances
  • Industrial automation
  • Building automation
Data sheet
RL78 product image

Product Range: RL78 Family, RL78/G1x Series, RL78/G15 Group Microcontrollers

Pkg. Name: PLSP0020JB-A

Pkg. Previous Code: P20MA-65-NAA-1(RL78)

JEITA Standard: P-LSSOP20-4.4x6.5-0.65

Pkg. Code: pkg_11837

Lead Count: 20

Length: 4.4 mm

Width: 6.5 mm

Thickness: 1.45 mm

Pb (Lead) Free: Yes

Pkg. Type: LSSOP

Moisture Sensitivity Level (MSL): 3

Pkg. Class: IC

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RX 32-Bit Performance / Efficiency MCUs

RX23W microcontrollers incorporate security functions that are vital for Bluetooth® 5.0 Low Energy (LE) and IoT devices, as well as a wealth of peripheral functions such as touch keys, USB and CAN, enabling system control and wireless communication with devices using a single chip. RX23W MCUs have full function support for Bluetooth 5.0 Low Energy long-range and mesh networking, and provide excellent reception performance.

View allRX family brochure

Renesas RX MCU Webinar 7 - Solutions


R5F523W8xDLN module


  • 48V mobility solution
  • AC/DC non-isolated capacitive touch wall switch
  • Automatic plant watering system
  • Bluetooth® low energy for RX family
  • Drug delivery with ISO 12207 software
  • Electronic drug delivery system
  • IEC 61508 functional safety solution
  • IP gateway for Automatic Home or Building HVAC system
  • Master actuator for Automatic Home or Building HVAC system
  • Medical patch
  • Network gateway for Bluetooth® Low Energy Mesh
  • Slave actuator for Automatic Home or Building HVAC system
  • Ventilator system
  • Features

    • RXv2 core 54MHz operation (4.33 CoreMark/MHz), single-precision FPU
    • Operating voltage: 1.8V to 3.6V
    • Operating temperature: -40 °C to 85 °C
    • Program flash up to 512KB, SRAM up to 64KB
    • Communications
      • Bluetooth Low Energy (one channel)
      • USB 2.0 Host/Function/OTG (one channel)
      • CAN (one channel)
      • SD Host I/F (on channel)
    • Capacitive touch sensing
    • Enhanced analog
    • Trusted secure IP lite (AES/TRNG)
    • Module package size
      • 6.1mm × 9.5mm, 0.5mm pitch (83-pin LGA)


    Featured RX 32bit

    The RX660 Group is the first 5V-compatible product among the RX600 and RX700 high-end general-purpose microcontrollers. With this 5V support, it gives excellent noise tolerance and does not require any external coils for noise suppression, which contribute to the reduction of the overall system cost.


    • Online Uninterruptible Power Supply (UPS)
    Data sheet
    RX210 product image

    Product Range: RX Family RX660 Series Microcontrollers

    Device Core: RXv3

    No. of Bits: 32bit

    CPU Speed: 120MHz

    Operating Frequency Max: 120MHz

    Program Memory Size: 1MB

    RAM Memory Size: 128KB

    Interfaces: CAN, I2C, JTAG, SCI, SPI

    Supply Voltage Min: 2.7V

    ADC Channels: 24Channels

    ADC Resolution: 12Bit

    Supply Voltage Max: 5.5V

    Operating Temperature Min: -40°C

    Operating Temperature Max: 85°C

    IC Mounting: Surface Mount

    MSL: MSL 3 - 168 hours

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    RA Family of Arm® Cortex®-M based MCUs

    Delivering the promise of a Secure, Connected and Intelligent IoT

    The flexible Renesas Advanced (RA) 32-bit microcontrollers (MCUs) are industry-leading 32-bit MCUs with the Arm® Cortex®-M33, -M23 and -M4 processor cores and PSA certification. RA delivers key advantages compared to competitive Arm Cortex-M MCUs by providing stronger embedded security, superior CoreMark® performance and ultra-low power operation. PSA certification provides customers the confidence and assurance to quickly deploy secure IoT endpoint and edge devices, and smart factory equipment for Industry 4.0.

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    Introducing the Renesas RA Family of 32-Bit Microcontrollers

    Official Renesas RA Family Beginner's Guide

    The Renesas RA family of 32-bit microcontrollers delivers the promise of a secure, connected and intelligent IoT. It enables a wide variety of end-product designs and is the perfect base for a platform thanks to its great scalability and ease of use.

    Getting started is now even easier with the "Official Renesas RA Family Beginner's Guide". This step-by-step guide takes you from the basics about the Flexible Software Package (FSP) and the RA toolchain to creating a project with the EK-RA6M4 Evaluation Kit from scratch. It also serves as a reference guide for those already familiar with the RA Family.

    Download the book!


    R5F523W8xDLN module


    Featured RA MCU

    The RA2L1 group is based on the Arm® Cortex®-M23 core, the most energy-efficient CPU among Arm Cortex-M today. The optimized processing and Renesas’ low power process technology makes it the industry's most energy-efficient ultra-low power microcontroller. 


    • Air Cleaner with Humidifying Functions
    • Air Conditioner (High-End)
    • Air Conditioner (Low-End)
    • Car Telematics Box Module
    • IH Cooking Heater (High-End)
    • IH Cooking Heater (Mid-Range)
    • IH Rice Cooker (High-End)
    • Industrial CAN Sensor Network
    • Instrument Panel for Light Electric Vehicles
    • Microwave Oven (High-End)
    • Microwave Oven (Low-End)
    • OCPP Interface Card (OIC) for Smart EV Chargers
    • Refrigerator (High-End)
    • Refrigerator (Low-End)
    • Smart Industrial Gas Alarm
    • Solar Powered Location Tracker
    • Washing Machine (High-End)
    • Washing Machine (Low-End)
    • Consumer applications
    • Home appliances
    • Industrial automation
    • Building automation
    • Medical and healthcare
    • General purpose
    Data sheet
    RA2L1 product image

    Product Range: RA Family, RA2 Series, RA2L1 Group Microcontrollers

    Device Core: ARM Cortex-M23

    Data Bus Width: 32bit

    Operating Frequency Max: 48MHz

    Program Memory Size: 256KB

    No. of Pins: 48Pins

    IC Case / Package: LFQFP

    Interfaces: CAN, I2C, SPI, UART

    RAM Memory Size: 32KB

    Supply Voltage Min: 1.6V

    Supply Voltage Max: 5.5V

    MCU Family: RA

    MCU Series: RA2

    MSL: MSL 3 - 168 hours

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    RH850 Automotive MCUs

    The RH850 Family of 32-bit automotive microcontrollers (MCUs) offers high performance balanced with very low power consumption over a wide and scalable range of products. This family offers rich functional safety and embedded security features needed for new and advanced automotive applications.

    The RH850 Family is offered in a Renesas 40nm process, an industry first, and offers tremendous capabilities and features as well as cost-effective pricing. The family offers a range of CPU core structures (single, multiple, lock-step and combination thereof) to support high-performance and/or high-reliability requirements.

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    48V Auxiliary Motor Control Proof of Concept Solution

    RH850 family features

    1. High scalability
    2. Scalable CPU core, memory, and peripherals allow reuse of software resources.

    3. High performance
      • High-performance CPU core
      • Greatly improved response performance for frequently used interrupt handling.

      • Low power consumption
      • Thorough low power capabilities contribute to reduced overall power consumption of automobiles.

      • Multi-core technology
      • Low power consumption and high performance are realized using multi-core technology.

    4. High reliability
    5. Support customers' functional safety activities compliant with ISO26262.


    Featured RH850 Automotive MCU

    The RH850/F1K is one group of single-chip microcontrollers in the RH850/F1x series which is designed for automotive electrical body applications. While it achieves low power consumption, the internal flash memory ranges from 768KB to 2MB and the package covers a wide range from 100 to 176 pins.


    • Airbag System
    • Automotive Battery Management System
    • Automotive Body Control Module (BCM) / LED Head Light Unit
    • Automotive Heating, Ventilation and Air Conditioning (HVAC)
    • Battery Charger & DC/DC Control System
    • Electric Sliding Door for Vehicles
    • Electric Window Lifter for Vehicles
    • Parking Assistance System with AHL Camera
    • Toll & Communication Unit of EV Charger Pile
    • Windscreen Wiper
    • Car Body
    • Body Control Module (BCM)
    • Automotive Gateway
    • Automotive HVAC
    • Automotive Lighting Modules
    Data sheet
    RH850 product image

    Product Range:s RH850 Family, RH850/F1K Group Microcontrollers

    No. of Bits:s 32bit

    Data Bus Width:s 32bit

    Operating Frequency Max:s 120MHz

    CPU Speed:s 120MHz

    Program Memory Size:s 2MB

    RAM Memory Size:s 128KB

    IC Case / Package:s LQFP

    No. of Pins:s 100Pins

    MCU Case Style:s LQFP

    No. of I/O's:s 81I/O's

    Interfaces:s CAN, I2C, LIN, UART

    Embedded Interface Type:s CAN, I2C, LIN, UART

    Supply Voltage Min:s 3V

    Supply Voltage Max:s 5.5V

    MSL:s MSL 3 - 168 hours

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