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Renesas Singapore - Knowledgebase

r_flash Module Guide Resources

Last Updated:11/21/2017


Where can I find the module guide resources for the Flash HAL modules on r_flash_hp and r_flash_lp?


Information on the module guide itself and the associated resources and known issues are available here.


There are two separate Flash modules: r_flash_lp and r_flash_hp. The High-Performance Flash module (Flash_HP) is the API used for programming the S7G2 and S5D9 parts. The Low-Power Flash module (Flash_LP) is the API used for programming the S3A7 and S124 MCUs. The two are not interchangeable, although the APIs and other features of the modules are very similar. This guide covers the operation of both of these HAL modules. A user-defined callback can be created to signal the completion of non-blocking data flash operations.

The Flash HAL modules support the following features:

  • Support for block erasing, reading, writing and blank checking of ROM flash
  • Support for both blocking and non-blocking erasing, reading, writing and blank checking of Data and Code flash
  • Support for callback functions for completion of non-blocking data flash operations
  • Support for Access window (write protection) for ROM Flash allowing only specified areas of code flash to be erased or written
  • Support for boot block swapping which allows safe re-writing of the startup program without first erasing it

Module Guide

The Flash HAL module guide is targeted for SSP 1.2.0 and above and the SK-S7G2 Kit.

The most recent versions of the Flash HAL module guide application note, application project and import guide are available here

Module Guide Resources

The following application projects are available from the Renesas web site at the referenced url.

  • Renesas Synergy™ Platform Access to External Flash Memory in Renesas Synergy™ Development Environments  here.
  • The Flash HAL module is used in the Developer Examples for the DK-S7G2. You can find a Knowledge Base article that describes the Developer Examples and how to create a project using the template here.

Known issues

  • Refer to the most recent release notes for known issues, available here.


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