Bus masters (CPU, CLA or DMA) can be configured to provide dummy reads to the memory (provided a particular bus master has access to the memory) and the read data can be checked by the built-in ECC or Parity logic. In the case of SRAMs with ECC protection, single bit errors are corrected and written back. For both SRAMs and flash, interrupt is issued once the count exceeds the preset threshold in the case of correctable errors and NMI will be issued in the case of uncorrectable errors.

Since the contents of Flash memory are static, VCU CRC Check of Static Memory Contents provides better diagnostic coverage compared to this diagnostic.