This simulator product makes source level debugging of applications possible in the Renesas integrated development environment, or the CS+, while the target system is not available on hand.

  • RH850 core operates by architecture of each G3M/G3K/G3KH/G3MH/G4MH.
  • Since the latency of access to the various types of memory and peripheral modules is not considered,the execution times (numbers of cycles) will be different from those for the actual device.

Release Information

Operating Environment

This product is included in the C Compiler Package for RH850 Family (for CS+). When the compiler package is installed, the functions of this simulator are added to the CS+.


  • Since the simulator/debugger runs on the host computer, the user can start debugging the program while the actual MCU is not available on hand. This will result in a reduced development period of the entire system.
  • The functions outlined below are available, which permit program test and debug to be proceeded efficiently.
    • Support each CPU in the RH850 Family.
    • If an error occurs while the program under debug is running, the user can choose to continue ignoring the error or stop the program.
    • Comprehensive break functions.
    • Set and edit memory map.
    • Display C and assembler source level coverages.
  • The simulator/debugger runs under Windows, allowing breakpoints, memory map and trace to be set in dialog boxes.


  • Work efficiency is increased, thanks to builder and debugger integration.
  • The stack is traced.
  • Comprehensive breakpoint functions are supported.
  • Assembler source level coverage display.

Simulation Range

[Functions Supported by This Simulator Debugger]

  • All executable instructions
  • Registers
  • Entire address space

[Functions Not Supported by This Simulator Debugger]

  • All microcontroller peripheral functions
  • Accessing I/O registers
  • Data cache
  • Cycle-accurate simulation

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.
Info on Discontinued Products A list of Renesas software and tools that have been discontinued and are no longer being offered for new projects.