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Chapter 55 Flash Security
1.Overview
Chapter 55 Flash Security
1. Overview
• Module for controlling the read and write access protection to the embedded Flash memory
2. Features
• Common read protection for all flash sectors depending on device mode
• Individual write protection for each flash sector depending on device mode
• Write protection level depending on device mode
• Security vector re-fetch sequence (for security status update after chip erase)
• CRC checksum calculation (CRC32/AAL5 algorithm)
• CRC polygon is x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1