Next generation of automotive powertrain MCU


The RH850/E2M microcontrollers operate at 400 MHz and are equipped with large-capacity code flash and RAM of the highest speed class, which is necessary for real-time control. By leveraging multiple G4MH cores, the RH850/E2M supports even more advanced functionality, and many built-in functions such as security functions for Evita Medium and functional safety (ISO 26262) functions make it easier to get certification. Over The Air (OTA) updating for automatically updating software wirelessly to a safer control program is also supported.


Main Solutions

Key Features

Item RH850/E2M
CPU Core

400 MHz lockstep dual core × 2, FPU × 2

(RH850 G4MH core)

Memory Code Flash 8 MB
RAM 768 KB
Data Flash 224 KB
Instruction Cache 16 KB
  • 20/40 MHz (clocked input to EXTAL pin),
  • multiply-by-20 / multiply-by-10 by built-in PLL,
  • internal ring oscillator
Data Transfer sDMAC 32 channels
DTS 128 channels
Timers OS Timer (OSTM) 3 channels
Watchdog Timer (WDT) 2 channels
Engine Control Timer (ATU-V) 1 unit
GTM 1 unit
Encoder Timer 2 units
Analog Successive Approximation A/D Converter 80 channels, 4 modules
Delta-Sigma A/D Converter 26 channels, 6 modules
Cyclic A/D Converter 8 channels, 1 module
Communication Interfaces Serial Communication Interface (SCI3) 4 channels
Clock Synchronous Serial Interface (CSIH) 6 channels
Renesas High-Speed Bus (RHSB) 2 channels
LIN (RLIN3) 6 channels
CAN/CAN-FD (Selectable) 5 channels
FlexRay 1 unit
Single Edge Nibble Transmission (RSENT) 17 channels
HS-SPI 1 channel
RHSIF 1 channel
Ethernet 1 channel
PSI5-S 1 channel
Digital Filter Engine (DFE) 16 channels, 2 units
  • Multi-Input Signature Generator (MISG),
  • CRC,
  • Error Control Module (ECM),
  • Voltage detector,
  • logic BIST and memory BIST functions,
  • temperature sensor
  • Built-in ICU-M hardware security module
  • (compliant with SHE/EVITA-Medium automotive security standard)
  • Code flash read/write protection that uses ID authentication
Power Supply Voltage
  • 1.20 to 1.35 V (CPU core),
  • 3.0 to 3.6 V(system),
  • 4.5 to 5.5 V (I/O)
  • 292-pin BGA (17 × 17; 0.8 mm),
  • 373-pin BGA (21 × 21; 0.8 mm)

Pin-Memory Size Lineup

Program Flash





Block Diagram:

RH850/C1H Block Diagram

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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