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Chapter 55 flash security, Overview, Features – FUJITSU MB91460 SERIES FR60 User Manual

Page 1025: Chapter 55 flash security 9, Overview 9, Features 9

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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