what is this Exit Secure Memory feature in STM32 system bootloader in AN2606 Application note? As per the application note it is used for secured exit from boot and entry from application. kindly explain clearly

[Nchun.1]

Whether this feature is applicable for only stm32g series listed below. Highlighted registers are not available in stm32f401

[Sarra.S]

Hello @NChun.1​,

Simply because this security feature is not available in the STM32F4 series, there is no securable memory area. You can check this table that summarizes the security features of STM32 products :

 

or check AN5156 : Introduction to STM32 microcontrollers security

Also, if you want to learn more about security there is a dedicated MOOC that explains each feature

I hope that helps!

[Nchun.1]

Thank you