11.5 Flash Protection Regions

Eight configurable protection regions are available for user program and user data Flash access control. A protection region can cover one or more consecutive 4 Kbyte pages anywhere in user program Flash. Protection regions provide access control based on the type of access for the designated portion of Flash. Access control is enforced in all modes of operation. Regions may overlap with the most restrictive permissions taking precedence. Subject to other access controls, there is full access (execute, data read, write, CRC) for user program Flash pages not included within any protection region.

Flash protection regions include:

• Flash write protection
• OTP Flash
• IRT partition
• Firmware IP protection (execute only memory)
• Flash code partitioning.