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E20 emulator [R0E000200KCT00]

As a sophisticated on-chip debugging emulator and flash programmer, the E20 emulator provides enhanced trace functions and RAM monitoring functions for RX600 and RX700 products, and the full basic debugging functionality of the E1 emulator. It is capable of large-capacity tracing for enhanced debugging in combination with MCUs that incorporate trace output functionality.


Release Information

Purpose of use Software to be used Target devices Note1 Latest Version Released     Operating Environment
On-chip Debugging


*Evaluation Software Download


[More details]

List of Functions Supported by CS+

V6.01.00 Jan. 22, 2018 Operating Environment

e² studio

*Evaluation Software Download


[More details]

*See "Release notes"

V6.2.0 Jan. 22, 2018
IAR Embedded Workbench Note2 RX、RL78、RH850 Contact IAR Systems.
Green Hills Multi Note2 RH850 Contact Green Hills Software.
Flash Programming

Renesas Flash Programmer V3

*Evaluation Software Download


[More details]

List of MCUs supported by Renesas Flash Programmer

V3.04.00 Jan. 22, 2018 Operating Environment


1: For details when using devices of V850 family, 78K0R, 78K0, or R8C family, see E1/E20 software for V850, 78K0R, 78K0, or R8C MCU >>.

2: As for tools produced by partners, contact them directly.



  • Enhanced functions for faster debugging
    In addition to all the debugging functions of the E1, the E20 supports powerful functionality such as larger trace capacity and realtime RAM monitoring. In addition, coverage function is supported on RX64M or RX71M Group.
    Learn more about debugging functions (On-chip Debuggers Performance Property) >>
  • Also functions as an on-board programmer.
    Can be used as an on-board programming tool after the debugging, enabling smooth evaluation of the MCU.
  • Optimally suited for evaluating analogue functions such as A/D and D/A properties.
    Electrical characteristics are the same as those of the actual MCU, since the actual MCU is used for debugging.
  • Serial, JTAG and LPD connections are supported.
    For the communication system, serial, JTAG or LPD connection can be selected as required by the type of the target MCU.
  • Simple connection
    Connection requires only a connector mounted on the user system, thus significantly reducing the possibility of loose connection.
  • Environmentally friendly material
    The casing is made of plant-derived polylactide (PLA).



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.
The specific features of the E20 emulator such as the large trace function and the real-time RAM monitor function are available only when using with MCUs of the RX600 or RX700 series. When using with MCUs of other than the RX600 or RX700 series, the supported functions for debugging correspond to those of the E1 emulator.

Connection system

Break function

Trace function

Memory reference and change while

 executing the program

Performance measurement

Real-time RAM monitor

C0 Coverage

Hot plug-in

See On-chip Debuggers Performance Property.
On-board programming Supported
User interface 38-way cable [2-5767004-2 (product of Tyco Electronics Corporation)]
14-way cable Note1 [7614-6002 (product of 3M Co., Ltd.) and 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.)
User's resource possession Some MCUs possess the port peripheral functions.
Power supply Not supported
Power voltage 1.8V to 5.5V (depending on the target MCU)
External dimension
(Except the protruding parts)
114.9 mm×74.2 mm×19.2 mm
Conformance with overseas standards European Standards: EN 55022 Class A, EN 55024
US FCC Standard: FCC part 15 Class A

1: The available debugging function corresponds to that of E1 Emulator. Even when using with E20, the large trace function and Real-time RAM monitor, specific functions of E20, are not supported.



  • E20 Emulator main unit
  • USB cable
  • User's system I/F cable
  • 38-pin/14-pin converter adapter (R0E000200CKA00)
  • Software CD-ROM
    • Installation guide
    • Self-Checking Program
    • USB driver
    • E1/E20 Emulator User's Manual

System Configuration


Optional Products

Following devices are optionally provided to facilitate the use of the E1 and E20 emulators.
Please make sure to choose the devices that match the type of your emulators and MCUs.



  • Conversion Adapter : Converts the number and height of the pins in the connector for the connection with the emulator.
  • Hot-plug Adapter : Allows you to connect the emulator without having to turn off the system (Hot Plugin).
  • Isolator : Enables debugging in an environment where there is a difference in potential between the user system GND and the host PC GND.
  • Low voltage OCD Board : Enables you to debug the target MCU, even if the adapter voltage is not high enough to reprogram internal Flash ROM. This product is used between the emulator and a user's system, and is united by the in-circuit connection with the user's system.
  • Debug MCU Board : Enables the incircuit connection of the emulator with the user's system. This board allows you to use enhanced debugging functions. The applicable debugging function varies depending on the MCU type.


Target Devices


As the supported devices are different depending on the software you use, refer to the "Target devices" in Release information.

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