This simulator product makes source level debugging of applications possible in the Renesas integrated development environment, or the High-performance Embedded Workshop, while the target system is not available on hand.

The simulator debugger's exclusive functions (high-function debugging) permits the programs written in C/C++ language or assembly language to be debugged efficiently while the actual MCU is not available on hand.

  • High-accuracy simulation (Cycle accurate)
  • Simulated I/O function (Standard and file input/output functions usable)
  • Virtual interrupt function (Simulation of interrupt operations possible.Virtual interrupts using arbitrary timing and break conditions.Timer module based internal interrupts possible.)

Furthermore, an intuitively understandable easy GUI (graphical user interface) provides a comfortable debug environment.

This product is included in theC/C++ Compiler Package for H8SX, H8S, H8 Family. When the compiler package is installed, the functions of this simulator debugger are added to the High-performance Embedded Workshop environment.


  • 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 number of instruction execution cycles is calculated by simulating. This enables performance evaluation even in the absence of the actual MCU.
  • The functions outlined below are available, which permit program test and debug to be proceeded efficiently.
    • Support each CPU in the H8SX, H8S, and H8 Families.
    • If an error occurs while the program under debug is running, the user can choose to continue ignoring the error or stop the program.
    • Get profile data and measure performance one function at a time.
    • Comprehensive break functions (virtual interrupt operations also possible).
    • Set and edit memory map.
    • Display a history of function calls.
    • Display C/C++ and assembler source level coverages.
    • Visual debug function based on image and waveform display.
  • The simulator/debugger runs under Windows, allowing breakpoints, memory map, performance and trace to be set in dialog boxes. The environment setup suitable for the memory map of each MCU in the H8SX, H8S, and H8 Families can also be set in a dialog box.
  • Learn More

Release Information

Latest Ver.: V.5.09.00
Released: Jun 7, 2010

Details of upgrade (See Tool News)
Operating Environment


  • If the High-performance Embedded Workshop V.4.07.00 has not already been installed in your PC, the simulator debugger for the H8SX, H8S, and H8 families cannot be updated to V.5.09.00. So be sure to update your High- performance Embedded Workshop to V.4.07.00 at first.
  • When you run the compiler on Windows 7, update it and then update your High-performance Embedded Workshop to V.4.08.00. For how to update High-performance Embedded Workshop to V.4.08.00, see "High-performance Embedded Workshop Revised to V.4.08.00 (PDF | English, 日本語)".

Target Devices


Type Title Date
Upgrade - Debugger Log in to Download ZIP 12.51 MB 日本語
Software & Tools - Evaluation Software Log in to Download EXE 97.60 MB 日本語
Upgrade - Debugger Log in to Download EXE 9.81 MB
Software & Tools - Other Log in to Download ZIP 19 KB
4 items


Type Title Date
Release Note PDF 307 KB 日本語
Manual - Development Tools PDF 4.16 MB 日本語
Manual - Development Tools PDF 1.85 MB 日本語
Manual - Development Tools PDF 141 KB 日本語
Manual - Development Tools PDF 1.21 MB 日本語
Tool News - Note PDF 195 KB 日本語
6 items

Additional Details


  • Work efficiency is increased, thanks to builder and debugger integration. (Note1)
  • ELF/DWARF2 object formats are supported.
  • Number of execution cycles and the number of calls are graphically displayed one function at a time.
  • The stack is traced.
  • Object optimization is possible by drawing on the information that is output by the profile function.
  • Comprehensive breakpoint functions are supported (virtual interrupt operations also possible). (Note1)
  • Assembler source level coverage display. (Note1)
  • Visual debug function based on image and waveform display. (Note1)


  1. This function is supported in the H8SX, H8S and H8 family simulator debuggers 4.0 or later that are supplied with the H8SX, H8S and H8 family compiler packages V5.0.

Basic Simulation Function


Simulated I/O Function / Virtual Interrupt Function


Image Display Window


Waveform Display Window

Simulation Range

[Functions Supported by this Simulator Debugger]

  • All executable instructions
  • Exception handling
  • Registers
  • Entire address space
  • Peripheral functions listed below in Table 1
Table 1. Peripheral Functions Supported by Each Simulator Debugger
Simulator Mode SYSCR registers Timer
H8/300 Simulator  
H8/300L Simulator  
H8/300HA Simulator Advanced
H8/300HN Simulator Normal
H8S/2600A Simulator Advanced lens panorama_fish_eye
H8S/2600N Simulator Normal lens panorama_fish_eye
H8S/2000A Simulator Advanced panorama_fish_eye
H8S/2000N Simulator Normal panorama_fish_eye
H8SX Normal Simulator Normal lens panorama_fish_eye
H8SX Advanced Simulator Advanced lens panorama_fish_eye
H8SX Maximum Simulator Maximum lens panorama_fish_eye

lens Supported | panorama_fish_eye Partly supported | — Unsupported

[Functions Not Supported by this Simulator Debugger]

  • Dual-ported RAM
  • Pulse width modulator (PWM)
  • Serial communication interface (SCI)
  • A/D converter
  • I/O ports
  • Interrupt controller

Note: Use an emulator to debug these functions.