Ideal for the motor control for HEV / EV. The dual-core high-end in-vehicle microcomputer with two-units resolver/digital converter.


The RH850/C1M-A2 microcontroller is equipped with an RH850 Family G3MH dual CPU core, which operates at 320MHz, 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 the resolver output signal to digital angle data, and a CPU and parallel motor control unit (EMU3), etc., providing peripheral functions that are ideal for motor control in HEVs/EVs. In addition, this product can simultaneously control two motors.


Main Solutions

Key Features:

Part Name R7F701275EABG
CPU CPU system RH850G3MH(with Lockstep)+RH850G3MH
CPU frequency 320MHz
Internal peripheral guard function (IPG) Supported
System error notification function (SEG) Supported
Memory protection unit (MPU) Supported
Floating point unit (FPU) Supported
Exclusive Control Register (MEV) Supported
Memory Program Flash 2 MB x 2
Instruction cache 8 KB x 3
Local RAM 64 KB x 3
Data Flash 64 KB
Global RAM 128 KB
External Interrupt Maskable interrupt (IRQ) 8
DMA, DTS DMA 16 channels, DTS 128 channels
Clock Main oscillator (Main OSC) 20 MHz
PLL Supported
Security Intelligent cryptographic unit slave E (ICUSE) Supported
Secure Watchdog Timer A(SWDTA) 2
I/O ports 99
Timers Timer array unit D (TAUD) 4 unit
Timer array unit J (TAUJ) 2 unit
Motor control timers (TSG3) 3 unit
Timer option (TAPA) 6 unit
Timer pattern buffer (TPBA) 2 unit
Timers for operating system (OSTM) 4 unit
Encoder timers (ENCA) 2 unit
Watchdog timer (WDTA) 2 unit
Serial Interfaces Clocked serial interface (CSIH) 3 channels
CAN interface (RS-CANFD) 4 channels
LIN master interface (RLIN3) 3 channels
Serial communication interface (SCI3) 3 channels
RSENT(Single Edge Nibble Transmission) 4 channels
A/D converter 12-bit A/D converter core 3 unit
ADCC0(Input pin count and Track and Hold count) 16 input pins x 6 Track and Hold
ADCC1(Input pin count and Track and Hold count) 16 input pins x 6 Track and Hold
ADCC2 (Input pin count and Track and Hold count) 16 input pins x 4 Track and Hold
Motor control Resolver/Digital Converter (RDC3A) 2 unit
Enhanced motor control unit (EMU3) 1 unit (2 channels)
Enhanced motor control unit (EMU3):SubCPU Frequency 320MHz
Other functions Error control module (ECM), Clock monitor (CLMA), Data CRC (DCRA) 2 units, Error collection coding (ECC), On-chip debug (OCD), Boundary scan, Peripheral interconnection 1 (PIC1B) 2 unit and Peripheral interconnection 2 (PIC2D) 1 unit
Power supply voltage Internal 1.25 ± 0.1 V
For I/O 5.0 ± 0.5 V
For Resolver/Digital converter 5.0 ± 0.5 V
For A/D converter 5.0 ± 0.5 V
Operating temperature Junction temperature (Tj) -40 to 150 ℃
Package 252-pin BGA (17 x 17 mm)

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

Block diagram rh850c1m-a2

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Datasheet Contact Sales

You can find an explanation of orderable part numbers here.


Resources for Software and Hardware

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Software Design Support

Title Description
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation.
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the CAN communication time measurement solution by systems under development.
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).


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