SFFS779 December 2024 TMS320F28P550SJ
The flash modules implemented in this device family have a bit multiplexing scheme where the bits accessed to generate a logical (CPU) word are not physically adjacent. This scheme helps to reduce the probability of physical multibit faults resulting in logical multibit faults. Rather, the bits manifest as multiple single-bit faults. As the SECDED flash ECC can correct a single-bit fault and detect a double-bit fault in a logical word, this scheme improves the usefulness of the flash ECC diagnostic. Bit multiplexing is a feature of the flash memory and cannot be modified by the software.