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

The RH850/C1M-A1 microcontroller is equipped with an RH850 Family G3MH CPU core, which operates at a frequency of 240MHz, 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.

 

Main Solutions

Key Features:

ITEM RH850/C1M-A1
Part Name R7F701278EAFP
CPU CPU system RH850G3MH(with Lockstep)
CPU frequency 240 MHz
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) Not Supported
Memory Program Flash 2 MB
Instruction cache 8 KB × 2
Local RAM 64 KB × 2
Data Flash 64 KB
Global RAM 64 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) 1
I/O ports 81
Timers Timer array unit D (TAUD) 2 unit
Timer array unit J (TAUJ) 1 unit
Motor control timers (TSG3) 2 unit
Timer option (TAPA) 4 unit
Timer pattern buffer (TPBA) 1 unit
Timers for operating system (OSTM) 3 unit
Encoder timers (ENCA) 2 unit
Watchdog timer (WDTA) 1 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) 11 input pins x 6 Track and Hold
ADCC1(Input pin count and Track and Hold count) 14 input pins x 6 Track and Hold
ADCC2 (Input pin count and Track and Hold count) 5 input pins x 4 Track and Hold
Motor control Resolver/Digital Converter (RDC3A) 1 unit
Enhanced motor control unit (EMU3) 1 unit (1 channels)
Enhanced motor control unit (EMU3):SubCPU Frequency 240MHz
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) 1 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 176-pin QFP (24 x 24 mm)

Pin count – Memory size Lineup:

Program Flash
SRAM

2MB
192KB
Pins
Package
176
LFQFP

 

Block Diagram:

Block diagram rh850c1m-a1

Recommended peripheral devices

Analog/Power Device
Recommended Product
Features Featured Document Ordering
Power Management IC RAA270000KFT Ideal power solution for RH850/E1x/C1x. Integrated fault diagnosis and monitor functions. Datasheet Contact Sales
Gate Driver
R2A25110 IGBT Gate Driver with insulating function (micro-isolator), isolation voltage: 2.5KVrms, excessive current protection function, mirror clamp function, soft turnoff function, etc.
Datasheet Contact Sales

You can find an explanation of orderable part numbers here.

 

Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.

 

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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