This product is a C compiler for M32C/80 Series, M16C/80 Series and M16C/70 Series MCU. The powerful optimizations offer the ultimate in execution speed and code efficiency, and the utilities increase productivity. Furthermore, the MISRA C Rule Checker can also be purchased. It will help you write high-quality C source code.

Learn More

Release Information

Latest Ver.: V.5.42 Release 00

Released: Apr 1, 2010

Details of upgrade (See Tool News)

Operating Environment

Standard life cycle of Compilers (PDF | English, 日本語)


  • This product is included in "C/C++ Compiler Package for R8C and M16C Families". This product is NOT available separately, but only included in the "C/C++ Compiler Package for R8C and M16C Families". To get a free upgrade version, download free updates from the Auto Update Utility or continue using separate on-line upgrade service as before.
  • "C/C++ Compiler Package for R8C and M16C Families 2011.04 " (released on 1 April, 2011) bundles C Compiler Package for M32C Series V.5.42 Release 00A which is identical in functionality with V.5.42 Release 00. If you purchase "C/C++ Compiler Package for R8C and M16C Families" , it comes with MISRA C Rule Checker SQMlint V.1.03 Release 00C (identical in functionality with V.1.03 Release 00B).

Target Devices



Design & Development

Sample Code

Additional Details


  • Integrated development environment High-performance Embedded Workshop
  • C compiler
  • Assembler
  • Linkage Editor
  • Load module converter
  • Librarian
  • Cross referencer
  • Absolute lister
  • Standard library
  • The SBDATA declaration & SPECIAL page Function declaration Utility
  • Simulator Debugger
  • Call Walker
  • MapViewer

Processing Flow

Installing this compiler package provides the following environment.

C compiler: NC308
Optimizing ANSI C compiler with extensions for embedded systems.
Assembler: AS308
Produces object code for the target MCU from assembly language source files.
Simulator debugger
Provides source level debugging capability in targetless system-level.
IDE (Integrated development environment): HEW (High-performance Embedded Workshop)
Provides seamless integration and easy access to all tools for coding, compiling, linking, and debugging. It greatly increases productivity.



Target Devices

  • M16C Family M32C/80 Series (32/16-bit)
  • M16C Family M16C/80 Series (16-bit)