Memory error correction method based on reading instead of writing
An error correction method and memory technology, applied in static memory, instrumentation, error detection/correction, etc., can solve the problem of increasing the area of the memory array by the supervision bit
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[0020] to combine figure 1 , the existing ECC encoding can be performed according to the following steps:
[0021] First, 64-bit data from the outside is written directly ( figure 1 A);
[0022] Secondly, the ECC encoding (encoding) circuit uses this 64-bit external data to generate 7-bit or 8-bit supervisory bits through certain rules ( figure 1 B);
[0023] Again, new 64-bit data and 7 / 8-bit supervisory bits are written into the memory array and completely replace the previously stored information ( figure 1 C).
[0024] to combine figure 2 , the decoding and correction of the existing ECC is carried out according to the following steps:
[0025] First, 64 bits of data and 7 / 8 bits of supervisory bits are read from the memory array ( figure 2 C).
[0026] Secondly, the supervision bit will use certain rules to decode (decoding) to judge whether the data is wrong, if there is an error, which bit is wrong and correct (correct) the wrong data ( figure 2 B).
[0027...
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