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 Downloads
Sample Code
Sample Code
Filters
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| Type | Title | Date Date |
| 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
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.
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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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 -
RH850 G3M停止問題 (TN-RH8-B0567E/J)について、G3MHコアに該当するかどうか確認したいと思います。
RH850 G3M停止問題 (TN-RH8-B0567E/J)について、G3MHコア搭載しているマイコンRH850C1M-A2に該当するかどうか確認したいと思います。
Aug 25, 2025
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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