26.5.10.1 Principle of Operation

The NVMCTRL embeds a functional safety feature in the form of a ‘single-error correction’ and ‘double-error detection’ (SECDED) Hamming Error Correction Code (ECC). This feature applies to the main Flash memory panel, the Data Flash, the User Row, the Software Calibration Area, and the Serial Number. Each single bit error in any 64-bit word of these sections will be corrected seamlessly by the NVMCTRL (and not written back in memory). Each double bit error will be detected but not corrected. For each 64-bit word in the memory, 8 bits are added in memory for storing the ECC. The standalone ECC logic comes with a fault injection and capture logic, used for testing the ECC feature.