Random access memory with redundant structure
A technology of random access and redundant structure, which is applied in the direction of static memory, digital memory information, information storage, etc., can solve the problems of high process cost, difficult integration, low speed, etc., and achieve good process compatibility, small unit area, and design simple effect
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[0021] In order to enable those skilled in the art to better understand, the applicant briefly introduces the prior art and its shortcomings. At this stage, the more commonly used reinforcement technology is the three-mode redundancy reinforcement technology, which belongs to the circuit design reinforcement technology. But strictly speaking, Triple Modular Redundancy (TMR) belongs to the reinforcement of the architecture level. Its anti-SEU mechanism is as follows figure 2 Shown. The design idea is: add two redundant storage units, and then send the output of the three memories to the majority voting circuit, and the result after voting is the final output result. The working truth table of the majority voting circuit is shown in the table. It can be seen from Table 1 that if the data of one of the three memories is reversed, the wrong data can be shielded after voting by the voting circuit.
[0022] Table 1 Truth table of TMR reinforced voting circuit
[0023] SRAM0
[002...
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