Memory test method
AssigneeChangxin Memory Technologies, Inc.
InventorXiaofeng Xu
Life of this patent
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Abstract
The present disclosure provides a memory test method. The method includes: determining a refresh cycle T, a designed attack resistance frequency F, and a single row read time t of a target repository; determining an attack row quantity N based on the refresh cycle T, the designed attack resistance frequency F, and the single row read time t; determining a group of target attack rows in the target repository based on a value of the attack row quantity N, where the group of target attack rows include N target attack rows, and at least two of the N target attack rows are spaced apart by one row; detecting, after reading the N target attack rows for X consecutive times, whether data exception occurs in all adjacent rows of the target attack rows, to complete one attack test.
Claims13
A memory test method, comprising:
- determining a refresh cycle T, a designed attack resistance frequency F, and a single row read time t of a target repository associated with dynamic random access memory (DRAM);
- determining an attack row quantity N based on the refresh cycle T, the designed attack resistance frequency F, and the single row read time t;
- determining a group of target attack rows in the target repository based on a value of the attack row quantity N, wherein the group of target attack rows include N target attack rows, and at least two of the N target attack rows are spaced apart by one row;
- detecting, by a processor after reading the N target attack rows for X consecutive times, whether data exception occurs in all adjacent rows of the target attack rows, to complete one attack test;
- and
- completing, by the processor, a plurality of attack tests on the target repository within M refresh cycles, wherein a number of the attack tests is MT/NXt, and when no data exception occurs in all of the attack tests, determining that an attack resistance capability of the target repository meets a requirement.
Dependencies are inferred from the claim text.