The new E2 emulator is an advanced on-chip debugging emulator and flash programmer developed based on a concept of "improvement of development efficiency". The download speed is up to twice as fast as the E1 emulator. Moreover, using combinations with the upcoming release solutions will contribute to reduction in development time.

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+
V8.02.00 Jul. 22, 2019 Operating Environment
e² studio
RH850 Note2, RL78, RX
[More details]
*See "Release notes".
V7.6.0 Oct. 08, 2019
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
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 Communication Time Measurement Solution (For RH850 family)
The following CAN-related tasks are possible in conjunction with the CS+ integrated development environment. This eases verifying the speed of CAN communications in terms of meeting the system requirements.

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


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

Application note:

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 tasks. These shorten the time taken to tune currents.

  • Measuring current with an 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)>>
 See the instruction video >>

Application notes:

Support for the input and output of external triggers
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.


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.


Note that some functions shown here may not be supported under the IDE you use. Performance property and Connection system also vary depending on the MCU type.

  • Connection system
  • Break function
  • Trace function
  • Memory reference and change while executing the program
  • Performance measurement
  • Hot plug-in
See  On-chip Debuggers Performance Property.
On-board programming Supported
User interface 20-way 1.27mm-pitch cable
[FTSH-110-01-L-DV-K (product of Samtec Inc.)]
*When using the conversion adapter: 14-way 2.54mm-pitch cable
[2514-6002 (product of 3M Limited)]
PC Interface USB 2.0, full speed and high speed
Target board connection Via attached user I/F cable (Connection signals vary by the target MCU type.)
Power supply Up to 200mA (1.8V~5.0V)
Power voltage 1.8V to 5.5V (depending on the target MCU)
External dimension
(Except the protruding parts)
105.9 mm×64.0 mm×19.5 mm
Conformance 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

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

Optional Products

Following optional products are provided to facilitate the use of the E2 emulators. Please make sure to choose the products that match MCUs you use.

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

As the supported devices are different depending on the software you use, refer to the "Target devices" in 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
RTE0T00020KCE00000R Mass Production Renesas call 1 3 Avnet Europe

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.