More secure data reading with error correction codes

A memory controller configured to read data from a memory array, comprising:

• an error correction code (ECC) encoder configured to encode data stored in the memory array;
• an ECC decoder configured to decode first data read from the memory array based upon a first read request and detect errors in the first data read from the memory array;
• and
• a fault controller configured to:
• command the memory controller to read other data from the memory array when the ECC decoder detects a correctable error;
• command the memory controller to re-read the first data from the memory array;
• when the ECC decoder detects a correctable error;
• compare the re-read first data to the read first data;
• signal a fault attack when the re-read first data is different from the read first data;
• and
• signal a fault attack when the ECC decoder detects an uncorrectable error
• wherein the memory controller returns the first data read from the memory array when the re-read first data is the same as the read first data, and
• wherein the memory controller returns the first data read from the memory array when the ECC decoder detects no error in the first data read from the memory array.