Renesas RH850 G3: Changing Security ID code or Code/Data Flash passwords

14-Aug-2024

Changing the Security ID code or Code/Data Flash passwords is not supported in winIDEA. These security settings are critical for protecting your embedded system's firmware and data integrity, and altering them requires a more controlled and specialized process.


Possible solution

If you need to change the Security ID code, Code/Data Flash passwords, or configure associated settings such as lock bits, OTP memory, or reset vectors, use a dedicated sample project provided by the Renesas Flash Code Library (FCL). The FCL is specifically designed to handle these operations safely and effectively.


Background

The Security ID code and Code/Data Flash passwords are important parts of the security architecture. These settings ensure only authorized users can access, modify, or erase the Flash memory contents. Lock bits, OTP (One-Time Programmable) memory, reset vectors, and serial programming options are often configured in tandem with these security settings.

Given the sensitive nature of these operations, winIDEA does not provide a direct interface for modifying these codes or passwords to prevent unintended changes that could compromise system security or render the microcontroller inoperable.


Accessing Flash Memory via winIDEA

In cases where you need to unlock access to Code/Data Flash within winIDEA, this can be done via Hardware | CPU Options | SoC.


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