Features
- CPU Core:
- C1M-A1: 240MHz core (Inc. Lockstep dual core x1)
- C1M-A2: 320MHz core x2 (Inc. Lockstep dual core x1)
- FPU
- Clock:
- Main Oscillator: 20 MHz
- PLL with selectable SSCG mode: 240 or 320 MHz
- PLL without SSCG mode: 80 MHz
- On-chip low-speed oscillator: 240 kHz
- Data transfer: DMAC / DTS
- Timer:
- Timer array unit D (TAUD) 2 or 4 units
- Timer array unit J (TAUJ) 1 or 2 units
- Motor control timer (TSG3) 2 or 3 units
- Encoder timer (ENCA) 2 units
- Analog: SAR A/D Converter 30 or 48ch, 3 units
- Communication Interfaces:
- Clocked Serial Interface H (CSIH) 3 channels
- CAN interface(RS-CANFD) 4 channels
- LIN interface(RLIN3) 3 channels
- Serial Communication Interface (SCI3) 3 channels
- RSENT 4 channel
- Motor Control:
- Motor control timer (TSG3) 2 or 3 units
- R/D converter (RDC3A) 1 or 2 units
- Enhanced motor control unit (EMU3) 1 unit
- Safety:
- Multi-Input Signature Generator (MISG)
- Clock Monitor
- Watchdog Timer
- Secure Watchdog Timer
- Memory protection function
- Power Supply Voltage:
- 1.15 - 1.35 V (CPU core)
- 4.5 - 5.5 V (I/O, System, AD converter, RD converter)
- Temperature: Tj= -40 - +150°
RH850/C1M-A1 Block Diagram
Description
The RH850/C1M-Ax ASIL-C microcontroller is equipped with an RH850 Family G3MH CPU core, which operates at a frequency of 1x 240MHz for C1M-A1 and 2x 320MHz for C1M-A2, providing high processing power. Along with the ROM, RAM and DMA, it includes various timers such as a motor control timer, various serial interfaces including CAN (CAN FD compatible), a 12-bit A/D converter (ADC), an R/D converter (RDC3A) that converts position-sensor output signals into digital angle data and a parallel embedded motor control unit (EMU3), providing a peripheral function set that is ideal for motor control in HEV/EV traction-inverter applications. In addition, C1M-A2 can simultaneously control two motors, e.g. for a starter/generator system.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | G3MH |
| Program Memory (KB) | 2048, 4096 |
| RAM (KB) | 128, 256 |
| Carrier Type | Full Carton (Tray) |
| Supply Voltage (V) | 4.5 - 5.5 |
| I/O Ports | 81, 99 |
| DRAM I/F | No |
| 3D GPU | No |
| Temp. Range (°C) | -40 to +150 |
| 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) | 4 |
| SPI (ch) | 3 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 4 |
| Wireless | No |
| SDHI (ch) | 0 |
| PWM Output (pin#) | 0 |
| 32-Bit Timer (ch) | 4, 8 |
| 16-Bit Timer (ch) (#) | 32, 64 |
| 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) | 30, 48 |
| 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
 | xEV Inverter with Inductive Position Sensor (IPS) High‑efficiency xEV inverter platform with optional IPS for lower cost, accuracy, and proven reliability. |
 | Motor Generator System High-performance xEV motor control design with ASIL C support, lock-step CPUs, and reduced BOM cost. |
 | Automotive Monitoring Function Extension Compact CMIC-based system for integrating motor monitoring and protection functions in automotive systems. |
 | Low Voltage Inverter for 2/3 Wheeler Traction Motor Control Inverter for 2/3 wheelers using automotive MCUs and analog products, designed for motor control. |
Complete Your Design
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Renesas Boards & Kits
Y-ASK-RH850C1M-A2
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RH850/C1M-A Starter Kit
The RH850/C1M-A Starter Kit serves as a simple and easy to use platform for evaluating the features and performance of Renesas 32-bit RH850/C1M-A2 microcontrollers.
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xEV Inverter Kit
The xEV inverter kit maximizes the HEV/EV motor performance by practical inverter hardware designs using a combination of microcontrollers, power management ICs, gate driver ICs, insulated gate bipolar transistors (IGBTs), and fast recovery diodes (FRD). Additionally, xEV Inverter Application... Read More
Partner Boards & Kits
Connectivity Module
CAN Bus J1939 Bridge (for Heavy-Duty)
Provides a high-performance communication bridge for heavy-duty commercial vehicles. Enables seamless data acquisition and translation from the Controller Area Network (CAN) J1939 protocol to telematics systems. Supports Fleet Management System (FMS) data standards to monitor vehicle diagnostics, fuel consumption, and environmental metrics. Designed to assist fleet operators in achieving ESG goals through precise carbon emission tracking and real-time vehicle status monitoring. The solution simplifies the integration of complex J1939 data into cloud-based management platforms.
Provided By:
SwiSys Co., Ltd.
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DRAM & Flash Memory Solutions
Provides a comprehensive external memory solution for Renesas RZ and R‑Car families, supporting systems that require scalable off‑chip memory. Supported memory types include Serial NAND (Quad/Octal SPI, 512Mb to 8Gb, 1.8V and 3.3V, 100K/60K cycle endurance), ONFI NAND (ONFI 1.0, 1Gb to 8Gb, 1.8V and 3.3V, 100K/60K cycle endurance), DRAM (DDR2/3/4 from 512Mb to 32Gb and LPDDR2/3/4/4x/5/5x from 1Gb to 16Gb), and HyperRAM™ (HyperBus, 64Mb to 512Mb, 1.8V and 1.2V).
Provided By:
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Other
Reference Hardware for Motor Controller
Provides a low-voltage inverter reference design for 2/3-wheeler traction motors supporting 36–72 V battery systems up to 5 kW rated and 10 kW peak power. Built on a Renesas RH850 microcontroller, it enables closed-loop motor control using trapezoidal and field-oriented control with resolver, encoder, and Hall sensor feedback. Integrates a power stage up to 500 A peak, automotive-grade protections, and vehicle interfaces including CAN, LIN, and Single Edge Nibble Transmission (SENT). Includes hardware files and sample software to accelerate development and scalable deployment.
Supported Products:
RH850/C1M-AxProvided By:
Embdes Engineering Solutions Pvt Ltd
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Traction Inverter/Motor Controller
EV traction inverter platform based on the Renesas RH850. Provides efficient motor control for ACIM, BLDC, and PMSM applications. Enables high-performance operation with integrated intelligent power modules (IPM), patented thermal management stack, and advanced protection features. Supports CAN and RS-485 communication and multiple feedback interfaces, including hall sensors and encoders. Delivers compact design, high reliability, and scalable performance for EV powertrains.
Provided By:
iVP SemiconductorLoading
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- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- Software PackageAn xEV (Electric Vehicle) runs on a motor or combination of motor and internal combustion engine, and the motor is controlled by the xEV Inverter. The “xEV Inverter Application Model and Software” provides a sample application model and software to control the motor, reducing software development effort and time during product development using the xEV inverter kit.
- 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.
- IDE and Coding ToolINCA tools are used for ECU development and test as well as for validation and calibration of electronically controlled systems in the vehicle, on the test bench, or in a virtual environment on the PC.Provider: ETAS Group
- 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 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]
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- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- Software PackageAn xEV (Electric Vehicle) runs on a motor or combination of motor and internal combustion engine, and the motor is controlled by the xEV Inverter. The “xEV Inverter Application Model and Software” provides a sample application model and software to control the motor, reducing software development effort and time during product development using the xEV inverter kit.
- 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.View More (34)
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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 ToolRTA-CAR (RTA-Classic AUTOSAR) is a compact and efficient, low-footprint software solution designed for series production in automotive applications. Used by hundreds of companies worldwide, it powers billions of automotive ECUs. As a single solution, RTA-CAR works with existing processes, can support multiple OEM needs and is ...Provided By: ETAS K.K.
- 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 MicrosystemsView More (54)
