DocID024207 Rev 1

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AN4246

Examples

2

Examples

2.1

Secure Firmware Update (SFU) bootloader protection

A secure firmware update bootloader (as described in AN4023) can be included. It allows

programming a third party code in the STM32 Flash memory, without compromising the

secure bootloader mechanism and/or keys.

2.2

Preloaded third-party IP code

The third-party code which contains critical intellectual property code can be preloaded (e.g.

through a fast ROM procedure) in the STM32 Flash memory and protected against reading

by activating the PCROP mechanism.

Then, the STM32 microcontrollers including the protected code can be used/programmed

by the end user, without affecting the protected code.