We have a lineup of high-end automotive microcontrollers which are ideal for body applications and can support a wide variety of systems.


The RH850/F1KM-S1 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 512KB to 1MB and the package covers a wide range from 48 to 100 pins. Also, a CAN FD interface has been added and the CPU operating frequency has been improved to 120MHz.


Main Solutions

Key Features:

Pin Count 48-pin 64-pin 80-pin 100-pin
External Memory I/F Not provided
Clock Main Oscillator: 8/16/20/24 MHz, PLL 120 MHz max, high-speed oscillator: 8 MHz, On-chip low-speed oscillator: 240 kHz
32.768kHz sub oscillator Not provided
Real time clock 1 unit
16-bit / 32-bit Timers 16 / 16 32 / 16
PWM incl. delay with diagnostics 13 channels 24 channels 48 channels
A/D converter 12-bit 8 channels 10 channels 11 channels 16 channels
10-bit 4 channels 11 channels 14 channels 20 channels
Serial Interfaces CSI 2 channels 2 channels 4 channels 5 channels
I2C 2 channels
LIN/UART 1 channel 2 channels 3 channels 4 channels
LIN Master 2 channels 3 channels
CAN 1 channel 3 channels 6 channels
SENT 2 channels
FlexRay Not provided
Ethernet AVB Not provided
Functional Safety Clock Monitor, Window Watchdog Timers, Memory Protection Unit, System Register Protection, Power-on-clear, On-chip Core Voltage Monitor, otner
Security Hardware Security Module (Evita-Light equivalent)
Power supply voltage VPOC to 5.5 V for I/O / 3.0 to 5.5 V for A/D converter
Operating ambient temperature Ta= -40 to 125℃

Pin Count / Memory Size Lineup:

Program Flash







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Hardware Tools


The ‘RH850/F1KM-S1 StarterKit’ serves as a simple and easy to use platform for evaluating the features and performance of Renesas Electronics’ 32-bit RH850/F1KM-S1 microcontrollers.


  • Connections for on-chip debugging and flash memory programming
  • Access to all microcontroller I/O pins
  • User interaction through potentiometer, rotary switch, buttons and LEDs
  • Serial interface connections for
    • 1x RS232
    • 1x LIN
    • 2x CAN-FD
  • Power supply by RENESAS E1 On-Chip debugger or externally (12V DC input)

 User Manual

 Software Package



Motor Control Starter Kit for RH850/F1KM-S1

 User Manual

 Software Package



E2 emulator

On-chip debugging emulator for RH850 family and RL78 family. Also available as a flash memory programmer.

 User Manual



Renesas Flash Programmer (Programming GUI)

The Renesas Flash Programmer provides usable and functional support for programming the on-chip flash memory of Renesas microcontrollers in each phase of development and mass production.


  • A simple GUI makes operations easy, even for first-time developers
  • PC-controlled programming via the E1 emulator or E2 emulator, a serial or USB connection

 User Manual


Software Tools

Green Hills Multi

Green Hills Software logo

RH850 Embedded Software Solutions

  • Multi development environments
    Quickly develop, debug, test, and optimize embedded and real-time applications
  • Green Hills Optimizing Compilers
    Generating the smallest and fastest code from C, C++, and Ada
  • simrh850
    Full-feature multi-core instruction-accurate simulation tool that allows faster development and deployment of V850 and RH850 multi-core projects. Support for various shared-memory and isolated architectures, as well as complete support for RH850 hyper-threading capabilities

IAR Systems

IAR Systems logo

IAR Embedded Workbench provides extensive support for RH850 devices.IAR Embedded Workbench is a complete set of development tools with leading optimization technology for creating powerful automotive applications.

Code Flash Libraries

Libraries for the reprogramming of code area flash memory, for the code areas of F1Kx products

This free-of-charge software library is for use with user programs that have to rewrite the contents of code flash memory. Self Programming Libraries provide the interface for operations on the code areas of flash memories that MCUs have.


  • Erasing
  • Programming
  • Internal verification
  • Blank checking
  • Security settings, etc.

 User Manual


Data Flash Libraries

Libraries for the reprogramming of data area flash memory, for the data areas of F1Kx products

This free-of-charge software library is for use with user programs that have to rewrite the contents of data flash memory. Data Flash Libraries provide the interface for operations on the areas of data flash memories that MCUs have.


  • Erasing
  • Programming
  • Internal verification
  • Blank checking

 User Manual


Renesas MCAL

Renesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package. This package includes SPAL, COM and TEST drivers based on AR4.2.2.

  • SPAL (including ADC, DIO, FLS, GPT, ICU, MCU, PORT, PWM, SPI, WDG)
  • COM (including CAN, LIN, FR, ETH)
  • TEST (including Core Test, Ram Test, Flash Test)

The software package is available free of charge and as is. In case you want to buy a different software package please contact us.


Smart Configurator

The Smart Configurator is a utility for combining software to meet your needs. It supports the following three functions related to the embedding of Renesas drivers in your systems: importing middleware, generating driver code, and generating code for making pin settings.

 User Manual

 Release Note


Third-Party Support

Vector Informatik

Vector Informatik logo

The MICROSAR evaluation package includes the Vector basic software according to AUTOSAR Classic as well as all necessary software tools. For further information click here

MICROSAR evaluation package


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