SW4STM32C datasheet(46/99 Pages) STMICROELECTRONICS

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5.3

Secure platform limitation

The STMicroelectronics platform provides the following code protection means.

RDP: ReadOut Protection

Prevents Flash Memory access through the JTAG for ALL Flash memory.

PcROP: Proprietary Code ReadOut Protection

Prevents read access of configurable Flash memory areas performed by the CPU execution

of malicious third-party code (Trojan Horse).

WRP: Prevents accidental or malicious write/erase operations.

For further details please refer to the reference manual or section Training L4 on

STMicroelectronics website www.st.com.

The next sections provide additional details on the expected behavior of the secure

applications.

5.3.1

RDP

•

Level 0: No Protection.

This is the factory default mode allowing all accesses.

•

Level 1: Read Protection.

Any access to Flash or protection extension region generates a system hard-fault

which blocks all code execution until the next power-on reset. A simple reset does re-

enable code execution; power must be switched off and on so that power-on reset

enables code execution. The restriction depends on the STM32 Series as described in

Table 4.

SW4STM32C Datasheet(PDF) 46 Page - STMicroelectronics