RDP for STM32H743

[deckhard]

1. Is it possible to set level 2 RDP to just a subset of a certain Flash bank? not the entire bank. (Begin Address -> End Address for example)
2. Is it possible to set RDP levels for an external flash not the internal MCU flash?

[Imen Ezzine · Accepted solution]

Hi deckhard,

1. For the RDP programming it is usually meant for the entire flash.

I think in this case it would be better to use the PCROP Protection feature that allows you to protect a specific section of your Flash defined by a start and end address as desired as this is the purpose of this feature.

For an easy programming I advice you to use the stm32CubeProgrammer software available on st website that allows you to modify the user option bytes via a simple interface as shown below:

PS: please make sure to read the needed steps on reference manual to avoid any possible harm for your STM32 board (bad manipulation of option bytes).

2. For the RDP protection on external flash, it is only available for internal Flash.

-Imen