Select the Form of License That Suits Your Pattern of Development

You can choose from among the four types of Renesas compiler license listed below for your development.

  • Standard edition, Node Locked License
  • Standard edition, Floating License
  • Professional edition, Node Locked License
  • Professional edition, Floating License

These licenses with valid period are intended to support changes in the customer’s development framework over time. They are a supplement to the permanent licenses, which have no limit on the period.

You can use a compiler product free of charge to evaluate its functions and performance before purchasing it. See this page for the details of the free evaluation editions >>

Map of Renesas compiler licenses

Professional and Standard Edition

Professional edition

In addition to the features of the Standard editions, the Professional editions provide advanced features which help to improve the quality of your programs and shorten development periods. See the table below for the features and the supported compilers. Refer to  the application notes for the Professional editions for details of the features. You can refer to the Tool News for each of the features from the " Details" links in the table.

Standard edition

The C-language specifications that comply with the ANSI standard are supported. These editions provide the essential features for writing programs to run on embedded devices.

Additional Features of Professional Edition

Features of the Professional Edition CC-RL CC-RX CC-RH
Checking of source code against MISRA-C: 2004/2012 rules (Note) Details ]
Detection of stack smashing [  Details ]
Enhanced security for dynamic memory management functions [  Details ]
Function to detect illegal indirect function calls [  Details ]
Dynamic checking based on dynamic analysis and device information
Half-precision floating-point
Synchronization function working when control registers are updated [  Details ]

 Supported |  Support in the next or later editions is under review. | — Support is not planned.


  • MISRA C is a set of guidelines developed by a non-profit organization, the Motor Industry Software Reliability Association (MISRA), regarding the reliability of software in the C programming language, particularly that for use in the automotive industry. More than 100 rules are set as guidelines regarding code in the C language. These rules are called MISRA C rules.
  • "MISRA" and the triangle logo are registered trademarks of HORIBA MIRA Ltd, held on behalf of the MISRA Consortium.

Permanent License and Annual License

Permanent license

  • No limit applies to the period of use for permanent licenses.
  • A permanent license is made effective by registering the license key that accompanies the compiler product.

Annual license

  • An annual license is valid for one year. The valid period is one year from initial registration with the Renesas Web site of the license acquisition code which accompanies the compiler product.
  • This license becomes valid after a license key is acquired by registering the license acquisition code with the Renesas Web site. (Note1)
  • The price of an annual license is lower than that of a permanent license.


  1. To acquire the license key which is required to use a compiler product, select [Obtaining a Subscription License Key] from the menu shown after logging-in to MyRenesas and register the license acquisition code which is included with the compiler product.

Difference between Permanent License and Annual License

Node-Locked License and Floating License

Node-Locked License

  • These licenses allow you to use a compiler on one specific PC per license.

Floating License

  • The licenses for the software are managed on a server, and are available for use on the PCs connected to a network within the range of the number of licenses.
  • A license is available while a PC is connected with the server on the network.
  • To use the license while disconnected from the network that includes the license server, customers can hold the license for a fixed period (as a number of days up to 99). Once the period which has been specified with the client elapses, the held license expires.
  • The license resides on a client PC for 30 minutes after it is obtained at the start of building. If building has not finished after the 30 minutes have elapsed, the client PC retains the license for another 30 minutes. This cycle is repeated until building is finished.

Flow of flowating license

Upgrade (edition) License

If you have a node-locked license for a standard edition, you can upgrade from the standard edition to a professional edition by additionally registering an Upgrade (edition) License.

It does not apply to floating licenses and annual licenses.


  1. Note that this form of upgrade (of the edition) is only for node-locked licenses.

Map of Upgrade (edition) License

Upgrade (version) License

The compiler licenses differ with the version. For example, V1.**.** and V2.**.** have different licenses since they are different versions.

In case of a license for an old version, you can use a new version of the compiler at low cost by additionally registering a Upgrade (version) License.

These licenses allow you to use both the new and old versions of a compiler.

This form of upgrade does not apply to annual licenses.

Upgrade (version) License

Applicable Compilers and Minimum Required Version for Compiler License

Applicable MCUs Product name Compiler name Minimum required version of compiler license
Standard and Professional edition Annual license Floating License Upgrade (edition) License Upgrade (version) License
RL78 C Compiler Package for RL78 Family CC-RL V1.01.00 V1.01.00 V1.01.00 V1.01.00
RX C/C++ Compiler Package for RX Family CC-RX V2.04.00 V2.03.00 V2.03.00 V2.04.00 V3.00.00
RH850 C Compiler Package for RH850 Family CC-RH V1.03.00 V1.02.00 V1.02.00 V1.03.00 V2.00.00

IDE for Compiler Package Products

Compiler packages without an IDE

Each of these products is structured as the compiler alone. Separate installation of an IDE is required. Refer to this page if you wish to use the e² studio. Latest version of the e² studio >>

Compiler packages with an IDE

Each of these products is structured as the CS+ IDE that includes a compiler. If the bundled version of CS+ is not the latest version, update it. Latest version of CS+ >>

No statement regarding an IDE

In the case of annual and upgrade (between versions and editions) licenses, the products are structured as only a license key and a license acquisition code.

Evaluation Edition

  • The Professional editions can be used during a trial period (Note1).
  • After the period, the licenses will revert to those for the Standard editions, and the linkage size becomes restricted (Note2).

Trial period of evaluation edition


  1. The trial period is the 60 days from the day the first build is executed after installing an evaluation edition.
  2. The linkage size differs with the compiler. CC-RL: 64 KB or smaller, CC-RX: 128 KB or smaller, CC-RH: 256 KB or smaller

Software License Agreement

TitleTypeLast Updated DateSize
Software License Agreement for Node-Locked License (permanent)
PDF 17 Nov 2015 115 KB
Software License Agreement for Floating License (permanent)
PDF 25 Apr 2019 114 KB
SOFTWARE LICENSE AGREEMENT (for Node Locked License(annual))
Software License Agreement for Node-Locked License (annual)
PDF 06 Dec 2016 120 KB
SOFTWARE LICENSE AGREEMENT (for Floating License(annual))
Software License Agreement for Floating License (annual)
PDF 06 Dec 2016 121 KB