RH850/E1M-S2 microcontrollers are suitable for engine control and at 320 MHz have the highest class of operating frequency among automotive microcontrollers. They are also equipped with large-capacity on-chip code flash and RAM.


The CPU core of the RH850/E1M-S2 delivers 30% better performance for engine control system applications than its predecessor. The RH850/E1M-S2 supports the SENT communication standard for sensor information, and also supports not only CAN FD for higher speed in-vehicle networks, but also ICU-S for the automotive security that will be demanded by cars going forward. It also has many built-in functions for realizing functional safety (ISO 26262) that facilitate certification.


Main Solutions

Key Features:

Item RH850/E1M-S2
CPU Core 240/320 MHz lockstep core, FPU (RH850G 3MH core) 
Peripheral Control Unit (PCU) 80 MHz (RH850 G3K core) 
Memory Program Flash 4 MB
Data Flash 64 KB
Instruction Cache 8 KB
Clock Up to 20 MHz (clocked input to EXTAL pin), multiply-by-12 / multiply-by-16 by built-in PLL, internal ring oscillator, built-in SSCG 
Data Transfer DMAC 16 channels
DTS 128 channels
Timer OS Timer (OSTM)  3 channels
Watchdog Timer (WDT)  2 channels
Secure Watchdog Timer (SWDT)  2 channels
Engine Control Timer (ATU-IV)  1 unit
Autonomous Pulse Adaptor (APA) 1 unit
Motor Control Timer (TSG2)  2 channels
Communication Interfaces  Serial Communication Interface (SCI3)  4 channels
Clock Synchronous Serial Interface (CSIH) 4 channels
Renesas High-Speed Bus (RHSB) 2 channels
LIN Master Interface (RLIN2) 1 channel
CAN/CAN FD (Selectable) 4 channels
FlexRay 1 channel
Single Edge Nibble Transmission (RSENT) 6 channels
Analog  Successive Approximation A/D Converter  48 channels
Delta-Sigma A/D Converter 8 channels
Digital Filter Engine (DFE)  16 channels
Safety Multi-Input Signature Generator (MISG), CRC, Error Control Module (ECM), other 
Security  Built-in ICU-S hardware security module (compliant with SHE/EVITA-Light automotive security standard)
Code flash read/write protection that uses ID authentication 
Debugging & Calibration  NEXUS, Low-pin Debug Unit (LDU), Advanced User Debugger (AUD) 
Power Supply Voltage  1.15 to 1.35 V (CPU core), 3.0 to 3.6 V (system), 4.5 to 5.5 V (I/O) 
Packages  252-pin BGA (17 × 17; 0.8 mm), 304-pin BGA (19 × 19; 0.8 mm)

Pin Count / Memory Size Lineup:

Program Flash



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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