Method for selecting error correction circuit in memory

Abstract

The invention provides a method for selecting an error correction circuit in a memory. ECC circuits with different performances are used for correcting data contents with different importance in the memory, so that the ECC circuits with the relatively high performances are used for correcting the data contents with the relatively high importance, and the ECC circuits with the relatively low performances are used for correcting the data contents with the relatively low importance, so as to avoid the power consumption waste caused by application of the same ECC circuits with the strong performances, and meanwhile, the logics of the ECC circuits, truly used at the any moment, are effectively reduced to reduce the soft error probability of the ECC circuit.

Description

technical field [0001] The invention relates to the field of semiconductor devices, in particular to a method for selecting an error correction circuit in a memory. Background technique [0002] Because there are many high-energy particles in the environment, and these high-energy particles will cause some soft errors in the circuit, which will have a certain degree of image on the performance of the circuit, especially the performance of the memory. For electronic products such as personal computers, it can be restarted or There are other ways to deal with this kind of soft error, but at the server level, if there is a problem, it will cause a lot of damage. For example, a network processor includes a variety of memories, common ones include Static Random Access Memory (SRAM for short), Dynamic Random Access Memory (DRAM for short), and three-state content addressable registers ( Ternary Content Addressable Memory, referred to as: TCAM) and on-chip cache (Cache), when erro...

AI Technical Summary

Problems solved by technology

Therefore, most of the data content in the network peak period is unimportant data content, and only a small amount of data content is important, that is, the ECC circuit with strong performance is protecting unimportant data content most of the time , which not only wastes power consumption, but also increases the area of ​​the ECC logic circuit and the probability of its own soft error caused by the large ECC area

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