Overview
Description
The IECUBE is a high-Performance full-spec emulator for RL78, 78K, and V850 MCUs. Affordable in cost, it provides high-performance debugging functions such as time measurement, coverage, and trace. In addition, a self-testing function detects faults in the IECUBE and performs maintenance.
Features
- Lineup [Learn More]
- IECUBE for RL78
- IECUBE for 78K0R
- IECUBE for 78K0
- IECUBE for 78K0S
- IECUBE for V850 (Discontinued product)
- Components [Learn More]
- Optional Products (Sold Separately) [Learn More]
- Target Devices [Learn More]
- Learn More
Target Devices
Additional Details
Lineup
IECUBE for RL78

IECUBE for 78K0R

IECUBE for 78K0

IECUBE for 78K0S

IECUBE for V850 (Discontinued product)

Components
- Emulator main unit (IECUBE)
- Softeware CD-ROM (USB driver is included.)
- USB interface cable
- User's Manuals
Note: For development work, a power supply adapter and options such as probe or socket compatible with the target device, all sold separately, are required.
Optional Products (Sold Separately)
- Emulation Probe
- Exchange Adapter
- Space Adapter
- YQ Connector
- Target Connector
- Mount Adapter
Optional product list of IECUBE for RL78 family (PDF | English, 日本語)
Optional product list of IECUBE for 78K0R (PDF | English, 日本語)
Optional product list of IECUBE for 78K0 (PDF | English, 日本語)
Optional product list of IECUBE for 78K0S (PDF | English, 日本語)
Optional product list of IECUBE for V850 (PDF | English, 日本語) - Check pin adapter Drawings of QB-144-CA-01 (PDF)
* Usable in common with RL78, 78K0R, 78K0, 78K0S, V850.
The pin header cover corresponded to the pin arrangement of the MCU is required. You can get the pin header cover package from the following package list. Please print the package and cut out the pin header cover for using.
Package list of pin header cover (PDF | English, 日本語)
Usage of Pin Header Cover - Power Supply Adapter
Specifications of the power supply adapter, QB-COMMON-PW-xx, vary depending on the region. Be sure to use an adapter designed for your region.
Target Devices
- RL78 Family
- 78K0R
- 78K0
- 78K0S
- V850 (IECUBE for V850 is a discontinued product.)
Support
Support Communities
- "Error occurred inside debugger" error while debugging in IAR Embedded workbench for renesas RL78
I am using IAR embedded workbench for development with version 2.21.2. I am getting error messages while debugging , in below scenario : If we put a breakpoint while target is running. If breakpoint hits. If we try to do step in. Error Messages :Fatal error: Emulator Message: Error occurred ...
Jun 14, 2017 - EESTUDIO WILL NOT INSTALL
... 148!MESSAGE Installed driver Renesas_E_Series_USB !ENTRY com.codesourcery.installer 1 0 2026-04-05 13:37:09.148!MESSAGE Installing driver Renesas_IECUBE... !ENTRY com.codesourcery.installer 1 0 2026-04-05 13:37:09.578!MESSAGE Installed driver Renesas_IECUBE!ENTRY com.codesourcery.installer 1 0 ...
Apr 8, 2026 - Cubesuite+ and breakpoint
I don't know if this is the right place for this question but here it goes. I want to be able to modify a variable value when a breakpoint is hit. I thought I could accomplish this using Python but I don't think I can. My idea is ...
Oct 7, 2013
Knowledge Base
- Flash Memory Data is Lost after I Turn Off IECUBE (IECUBE) [RL78]
When you turn off IECUBE, data is lost because code flash memory and data flash memory of IECUBE are emulated by RAM. To preserve the flash memory data, use the following steps. [Steps to be taken before finishing a debug] 1. In CS+, select [Upload] from the [Debug] menu. 2 ...
Feb 1, 2021 - RAM parity error detection (IECUBE) [RL78]
IECUBE initializes the entire RAM area at startup. Therefore, no RAM parity error occurs. Use an on-chip debugging emulator (for example, E2, E2 Lite) to check the RAM parity error detection function.
Feb 1, 2021 - Circuit board is not operating as I am using emulator to debug. (CS+, E2, E2 Lite, E1, E20)
It is possible that the program is downloaded into a simulator. Check to see if the debug tool selected in the project tree is the emulator you’re using. To select a debug tool, follow the procedure below. [How to select a debug tool]Select a debug tool in the ...
Mar 4, 2021