The E2 emulator is an advanced on-chip debugging emulator and flash programmer developed with the concept of greater efficiency in development. The combination of its high-speed downloading and various software and hardware solutions will contribute to reducing development times.


The E2 emulator newly supports the RX13T group of 32-bit motor-control MCUs. Learn more (RX13T) >>

Release Information

Purpose of use Software to be used Target devices Latest Version Released Operating Environment
On-chip Debugging CS+ (CS+ for CC)
*Evaluation Software Download


RH850, RL78, RX
[More details]
 List of Functions Supported by CS+
V8.03.00 Jan. 20, 2020 Operating Environment
e² studio
RE, RH850 Note2, RL78, RX
[More details]
*See "Release notes".
V7.7.0 Jan. 20, 2020
IAR Embedded Workbench Note1 RH850, RL78, RX For the details of support for E2, contact IAR Systems.
Green Hills Multi Note1 RH850, R-Car D1
For the details of support for E2, contact Green Hills Software.
Flash Programming Renesas Flash Programmer V3
*Evaluation Software Download
RE, RH850, RL78, RX
[More details]
 List of MCUs supported by Renesas Flash Programmer


V3.06.01 Oct. 08, 2019 Operating Environment

1. As for tools produced by partners, Contact each company directly.
2. The e² studio does not support RH850-family MCUs with the next-generation G4MH core, such as those of the RH850/E2x series.


High-speed download up to twice as fast as E1
The download speed is up to twice as fast as the E1 emulator. This substantially reduces waiting time for downloading the control programs to one-half at a maximum.

CAN Communications Time Measurement Solution (for RH850 Family)
The following CAN-related tasks are possible in conjunction with the CS+ integrated development environment or the MULTI® integrated development environment (GHS MULTI) from Green Hills Software. This eases verifying the speed of CAN communications in terms of system requirements.

  • Measuring the reception processing time in CAN communications with the E2 emulator alone
  • Stopping a program when the reception processing time exceeds the design value
  • Visualizing the history of CAN communications


Learn More (CAN Communication Time Measurement Solution (CS+)) >>

Application note: For RH850 (CS+)

Tool News: E2 Emulator for Reducing the Time Required to Solve Problems  >>

Tool News: Quickly Resolve the Reception Processing Time Problem in CAN Communications in GHS MULTI >>

Current Consumption Tuning Solution (for RL78 and RX Families)
In conjunction with the QE for Current Consumption, a dedicated tool for measuring current drawn, the E2 emulator is capable of the following items. These shorten the time taken to tune currents.

  • Measuring current with the E2 emulator alone
  • Stopping a program when an excessive current is detected
  • Visualizing the relationship between program operations and current

Learn More (QE for Current Consumption)>>

 Watch the demonstration video of debugging techniques for reducing system currents. >>

Application notes:

Support for the input and output of external triggers (For RH850 Family)
For example, you can set up the stopping of programs or of the measurement of waveforms by simply using the test lead which comes with the E2 emulator to connect the emulator to an external measuring instrument with the CS+ integrated development environment or the MULTI® integrated development environment (GHS MULTI) from Green Hills Software.

Tool News: Detect Program Errors Easily in GHS MULTI by Linking with an External Measuring Instrument >>


Hot plug-in function available without an optional adapter
Although the E1 emulator required an optional hot plug adapter sold separately to use the hot plug-in function, the E2 emulator does not need it.


Board interface compatible with that of E1

  • The E2 emulator can be connected to the user system that was designed for the E1 emulator because the pin arrangement to be connected to the user system has compatibility with the E1 emulator.
  • The optional products for E1 emulator are available. See the optional products for E2 for the details.


Support for new MCUs with next-generation cores
MCUs that have next-generation cores, such as those of the RH850/E2x series (which incorporate the G4MH core) or the RX66T group (which incorporate the new RXv3 core for the RX family) can be debugged.


Software Trace Function (For RH850 Family)
The function enables users to view the execution history of the programs such as the values of the program counter (PC) and the register values together with the debug instructions of MCUs for RH850 family with the CS+ integrated development environment or the MULTI® integrated development environment (GHS MULTI) from Green Hills Software. Using this feature, unlike the conventional method of “tracing data with the settings of events and conditions,” users can generate the execution history data such as the PC values and register values simply by inserting the debug instructions to the location where you like to check in the program.
This feature is available in all RH850 family MCUs, including the ones do not have internal trace memory when debugging.

Tool News: Quickly Solve Problems from Your Customers! Using Trace Data of Program Execution History >>


The supported facilities differ with the integrated development environment you are using.

  • Method of connection
  • Break function
  • Tracing
  • Reference to and changing memory contents while a program runs
  • Performance measurement
  • Hot plug-in
Since the method of connection and the functions may differ with the device you are using, refer to  On-chip Debuggers Performance Property.
On-board programming Supported
User interfaces 20-pin 1.27-mm pitch connector
(FTSH-110-01-L-DV-K: 1.27-mm/0.50”-pitch micro-header from Samtec)
With the use of a conversion adapter which comes with the E2 emulator:
14-pin 2.54-mm pitch connector (2514-6002 from 3M Limited)
PC Interface USB 2.0, full speed and high speed
Connection to the system Connection to the system is via the user system interface cable which comes with the product (signals for connection vary with the type of the target MCU).
Facility to supply power to the user system from the E2 emulator 200 mA max. (1.8 V to 5.0 V)
Power-supply voltage The range of operating voltage for the target MCU
(1.8 V to 5.5 V)
External dimensions
(except for the protruding parts)
105.9 mm×64.0 mm×19.5 mm
Compliance with overseas standards European Standards: EN 55022 Class A, EN 55024
US FCC Standard: FCC part 15 Class A


  • E2 Emulator main unit
  • USB cable
  • User's system I/F cable [RTE0T00020KCAC0000J]*Available for purchase in single unit.
  • Conversion adapter [RTE0T00020KCA00000R]
  • Converts from 20-pin for E2 to 14-pin for E1.*Available for purchase in single unit.
  • Test lead

System Configuration

Note 1. To use the E2 emulator with boards designed for the E1, use the E2's accompanying conversion adaptor.

Optional Products

The following optional products are provided to facilitate the use of the E2 emulator in various ways. They are only for certain ranges of products, so take care to select products that work with the MCU you are using.

Note: Please read references to "E1 emulator" in the manuals for optional products as also meaning "E2 emulator".

RH850 RL78 RX R-Car D1
14-Pin to 38-Pin Conversion Adapter for the E1 Emulator
An adapter for converting the 14-pin/2.54-mm pitch connector on the head of the emulator user interface cable to a 38-pin/0.5-mm pitch connector

Small Connector Conversion Adapter for the E1 Emulator
An adapter for converting the 14-pin/2.54-mm pitch connector on the head of the emulator user interface cable to a 14-pin/1.27-mm pitch connector

20-Pin to 14-Pin Conversion Adapter for the E2 Emulator
(Bundled with the E2 Emulator)
An adapter for converting the 20-pin/1.27-mm pitch connector on the head of the emulator user interface cable to a 14-pin/2.54-mm pitch connector

20-Pin(1.27mm) to 20-Pin(2.54mm) Conversion Adapter for the E2 Emulator
An adapter for converting the 20-pin/1.27-mm pitch connector on the head of the emulator user interface cable to a 20-pin/2.54-mm pitch connector

 Available | — Not Available

RH850 RL78 RX
Isolator for the E1 Emulator
(For the RX or the R8C family)

Isolator for the E1 Emulator
(For the RL78 or the RH850 family)

 Available | — Not Available

Low voltage OCD Board for RL78/G10 (10-pin/16-pin)
An OCD board for debugging an RL78/G10 MCU (10-pin or 16-pin) with an adapter voltage below 4.5 V

 Available | — Not Available

Debug MCU Board for RH850   Supported devices for Debug MCU Board for RH850 Family
This board enables use of the trace function even if the target MCU does not have a trace function. The Debug MCU Board is for use in combination with a separately available 176-pin (with internal trace function) MCU of the RH850/F1L group.

Note: The package of the Debug MCU Board does not include the MCU. Please purchase it separately. For details, contact either a Renesas Electronics Corporation representative (responsible for sales) or distributor. (Buy or Sample)>>

 Available | — Not Available

System configuration

Target Devices

Since the supported devices differ with the software you are using, confirm details in the "Target devices" column of Release information.

Information Supporting Development Tools

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 MCU's.
Tool News Tool release information and other important information.
Operating Environment Information on system requirements and operating environment for the latest version of tools.
Tool Environmental Information Information on RoHS compliance of tools.
Info on Discontinued Products A list of Renesas software and tools that have been discontinued and are no longer being offered for new projects.

Tool Information

Tools Orderable Part Number (s) Production Status Manufacturer Suggested Single Tool Price
Description Distributor Stock Distributors Distributor Purchase Buy Direct
RTE0T00020KCE00000R Mass Production Renesas call 1 2 Mouser -

Note: Distributor Prices may vary from the stated budgetary price. The pricing and availability information on this site is based on information provided by Renesas’ authorized distributors and is subject to change without notice. By selecting a distributor from this page, you will be redirected from the Renesas site to the distributor’s website to complete a purchase. The distributors are independent from Renesas and maintain their own terms and conditions of sale. Renesas disclaims all representations and warranties, express and implied, with respect to transactions between distributors and their end customers.