Overview
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.
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°
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
Software title
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Software type
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Company
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ASCET-DEVELOPER ETAS ASCET-DEVELOPER (ASCET 7) is a tool for developing application software for embedded systems using graphical models and textual programming notations.
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Other Hardware | ETAS Group |
ETK / FETK / XETK – ECU Interfaces The Ethernet-based ETK / FETK / XETK interfaces by ETAS provide direct access to the measurement variables and control parameters of an ECU.
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Other Hardware | ETAS Group |
INCA INCA 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.
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IDE and Coding Tool | ETAS Group |
E2 emulator [RTE0T00020KCE00000R] On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
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Emulator | Renesas |
Renesas Flash Programmer (Programming GUI) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
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Programmer (Unit/SW) | Renesas |
RH850 Multicore Model-Based Environment [Embedded Target for RH850 Multicore] The Embedded Target for RH850 Multicore is a RH850 model-based multicore environment that simplifies complex driving control for the autonomous-driving era. In addition to the multicore support of the PILS tool for automatic configuration of environments, Embedded Target for Renesas CS+, it can also be interlinked with a model-based parallelization tool from eSOL Co., Ltd.
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Model-Based Development | Renesas |
Renesas MCAL Renesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
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Software Package | Renesas |
xEV Inverter Application Model & Software An 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.
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Software Package | Renesas |
IAR Embedded Workbench for Renesas RH850 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.
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IDE and Coding Tool | IAR Systems |
Green Hills Multi Multi development environments allow to quickly develop, debug, test, and optimize embedded and real-time applications. The Green Hills optimizing compilers generate the smallest and fastest code from C, C++, and Ada.
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IDE and Coding Tool | Green Hills Software LLC |
RH850 Smart Configurator RH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings.
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Solution Toolkit | Renesas |
MBD Solution for RH850/C1M-Ax The MBD solution for RH850/C1M-Ax connects the MCU peripheral IP model with the user model through an intuitive physical value interface and realizes seamless Model-Based Design (MBD) from simulation to embedding generated code into the actual hardware.
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Model-Based Development | Renesas |
Green Hills MULTI Device-Support-Packages Green Hills MULTI Device-Support-Packages include all device specific files to be used with the MULTI IDE.
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IDE and Coding Tool | Renesas |
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Sample Code
Sample Code
Sample Code |
ZIP
1.29 MB
Application:
Automotive, Cloud & Enterprise
Function:
Application Example
IDE:
GHS MULTI for RH850
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Sample Code | ZIP 3.74 MB | |
Sample Code |
RH850/C1M-A Controlling the Permanent Magnet Synchronous Motor with Resolver by Using RDC3A and EMU3
ZIP
3.00 MB
日本語
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3 items
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Boards & Kits
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.
Traction Motor Controller Board
This traction motor controller mainly intends to drive motor control for HEV/EV-based applications and these consist of two boards – the controller board which controls the motor driver, digital, and analog sections and the power board includes power MOSFETs for motor drive. The controller board...
xEV Inverter Kit
An inverter is used to convert DC power to the AC power used in an electric vehicle motor. 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...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Models
Model - BSDL | ZIP 4 KB | |
1 item
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Product Options
Applied Filters:
Support
Support Communities
Partners
Vector Informatik GmbH
The MICROSAR evaluation package includes the Vector basic software according to AUTOSAR Classic as well as all necessary software tools.
Embien Technologies India Pvt.Ltd
Embien, together with Renesas, designed and developed the Secure Bootloader stack for Renesas RH850 devices that allows secure FOTA update and firmware validation.
SimuQuest
SimuQuest’s QuantiPhi enables driver configuration and production code generation, seamlessly integrated with Simulink. QuantiPhi detects and resolves inconsistencies in real-time and automatically optimizes chip settings.
Support Communities
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Which one the most suitable for E-bike BLDC motor driver? RH850/C1M-A or RH850/F1KM?
Dear all fellows I have a question would ask all of you. I'm FAE. My customer design E-bike. They use BLDC hub motor 3000W. Then RD looking for reference design and good MCU one. As my subject mention, which one should be used?
Dec 15, 2021 -
RH850 - Hall Based FOC in Torque and Speed Control
Hello, We are designing an Automotive grade Hall sensor Based FOC in Torque and Speed control Motor controller. Any recommendations on how to kickstart with Renesas RH850 or any other MCU's that are Automotive Grade and meet our requirements. We are currently designing a 3kW (and future expand to ...
Jun 1, 2024 -
Trying to use the block erase command in Data Flash
Hi , I am trying to erase the block for Data area in RH850C1MA2 controller. Now when FACI accepts command 0xD0 (which is written in block erase command function), the FSTATR.FRDY becomes 0 (which means block erase processing is happening but it never becomes 1). I have to forcibly stop ...
Apr 19, 2023
FAQs
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RH850: Toolweb / MyPages, features and registration
All relevant, downloadable items to a specific RH850 device can be obtained from the corresponding product website. Here are some examples: RH850/C1M-Ax - Microcontroller with G3MH CPU Core Ideal for HEV / EV Motor ControlRH850/F1KM-S4 - High-end Automotive Microcontrollers Ideal for Body ApplicationsRH850/U2A ...
Jun 14, 2024
Videos & Training
Discover the reference solution to build world’s smallest 100KW class inverter for electric vehicles.
News & Blog Posts
Blog Post
Nov 4, 2021
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Blog Post
Jul 21, 2021
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