18.4.1 Calculating for “PF” in the Checksum Formula

The size of the program Flash is 512-KB, which equals 524288 bytes. Since the program Flash is assumed to be in erased state, the value of PF is resolved through the following calculation:

PF = 0xFF + 0xFF + … 524288 times
PF = 0x7F80000 (32-bit number)

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