Features
- 32-bit single-chip microcontroller with one G3KH CPU core
- High computational processing power
- 240MHz operating frequency
- 2MB internal flash memory
- Wide variety of internal peripheral functions
- CAN FD interface
- Low power consumption
- Low Power Sampler (LPS) polls signal inputs without CPU core interaction
- DeepSTOP mode disables power to select circuits within the chip
- Package options from 100 to 176 pins
RH850/F1KM-S2 100-Pin Block Diagram
Description
The RH850/F1KM-S2 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 is 2MB and the package covers from 100 to 176 pins. Also, a CAN FD interface has been added and the CPU operating frequency operates up to 240MHz.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | G3KH |
| Program Memory (KB) | 2048 |
| RAM (KB) | 256 |
| Carrier Type | Full Carton (Tray), Tray |
| Supply Voltage (V) | 3 - 5.5 |
| I/O Ports | 75, 114, 144 |
| DRAM I/F | No |
| 3D GPU | No |
| Temp. Range (°C) | -40 to +105, -40 to +125 |
| Ethernet speed | No |
| Ethernet (ch) | 0 |
| EtherCat (ch) (#) | 0 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| USB HS (host ch/device ch) | ( 0 / 0 ) |
| USB SS (host ch/device ch) | ( 0 / 0 ) |
| PCI Express (generation and ch) | No |
| SCI or UART (ch) | 1, 2 |
| SPI (ch) | 5, 6 |
| I2C (#) | 2 |
| CAN (ch) | 8 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| PWM Output (pin#) | 0 |
| 32-Bit Timer (ch) | 16 |
| 16-Bit Timer (ch) (#) | 32, 48 |
| 8-Bit Timer (ch) | 0 |
| Standby operable timer | No |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 0 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 32, 34 |
| 10-Bit A/D Converter (ch) | 0 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 16-Bit D/A 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 |
| Graphics LCD Controller | No |
| MIPI Interfaces (CSI) (ch) | 0 |
| Image Codec | No |
| Segment LCD Controller | No |
| Security & Encryption | Yes |
Application Block Diagrams
 | DC Fast Charging Station for Electric Vehicles DC fast charging station design with high‑efficiency IGBTs, gate drivers, an MCU, and PMIC. |
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RH850/F1KM-S4 and RH850/F1KM-S2 Starter Kit
The RH850/F1KM-S4 Starter Kit serves as a simple and easy to use platform for evaluating the features and performance of Renesas' 32-bit RH850/F1KM-S2 and RH850/F1KM-S4 microcontrollers.
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RH850/E1L,RH850/F1K,RH850/F1KH-D8,RH850/F1KM-S1,RH850/F1KM-S2,RH850/F1KM-S4,RH850/F1L,RH850/P1M,RH850/P1M-CProvided By:
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- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- 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 ToolGreen Hills MULTI Device-Support-Packages include all device specific files to be used with the MULTI IDE.
- Compiler/AssemblerC Compiler Package for RH850 Family [IDE: CS+, e² studio]
- Solution ToolkitRH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings.
- 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. 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 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)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]
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- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- 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 ToolGreen Hills MULTI Device-Support-Packages include all device specific files to be used with the MULTI IDE.
- Compiler/AssemblerC Compiler Package for RH850 Family [IDE: CS+, e² studio]View More (25)
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RH850/ F1km-s2: ASIL-B or QM level qualified device
Hello , Support Team , I would like to check whether RH850/ F1km-s2 is ASIL-B or QM level qualified device ? I checked the datasheet , but not found the answer. Thanks in advance for your support. Best,
Apr 15, 2024 -
CANFD Register Setting Usage — RH850/F1KM-S2
In the sample project Y-ASK-RH850F1KM-S4-V3_sample_V1011. if the register RCFDCnCFDTMSTSp for channel 3 uses p = 96, shouldn't the corresponding register for channel 4 use p = 128 instead?2. In the configuration table, the third column corresponds to the register RCFDCnCFDGAFLP0_j. According to the ...
Jul 16, 2025 -
CANFD Receive Message — RH850/F1KM-S2
Hello—this function is taken from the Y-ASK-RH850F1KM-S4-V3_sample_V101 CAN-FD example. When calling it, is there a way to identify which CAN0 channel (0–7) the received data came from, and how can I retrieve the CAN ID? Also, regarding line 304: CRBRCFiBufIdx = BufIdx ...
Jul 18, 2025
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