Memory service life test algorithm

Abstract

The invention provides a memory service life test algorithm. A calculator unit is added into a memory service life test program; a rated service life upper limit is set according to a memory data manual; then, an ultimate service life upper limit being at least twice of the rated service life upper limit is set; if the number of read-write times is greater than the ultimate service life upper limit, the condition that a memory fails is judged; if the number of the read-write times does not exceed the ultimate service life upper limit, the total number of test times obtained through adding one test time number to the ultimate service life upper limit is tested; then, a storage region of the memory is continuously subjected to read-write operation; data, with the fixed lengths, written in each time is different; the total number of operation times, the total number of write-in error times and the total number of read error times are recorded; after the test on the total number of test times is completed, whether the number of read-write error times exceeds 60 percent of the total number of test times or not is judged; if so, the condition that the memory fails is judged; and if not, the condition that the memory does not fail is judged. The invention provides the reliable and powerful basis for mass cargo supply memory service life inspection, electric energy meter data reliability test and meter storage algorithms.

Description

technical field [0001] The invention relates to the field of memory, in particular to a memory life testing algorithm. Background technique [0002] Memory is a memory device used to store information in modern information technology. Its concept is very broad and has many levels. In digital systems, as long as it can store binary data, it can be a memory; The circuit with storage function is also called memory, such as RAM, FIFO, etc.; in the system, storage devices in physical form are also called memory, such as memory sticks and TF cards; all information in the computer, including input raw data, computer programs, intermediate Both the running result and the final running result are stored in the memory. It stores and retrieves information according to the location specified by the controller; with memory, the computer has a memory function to ensure normal operation; the memory in the computer can be divided into main memory and auxiliary memory according to the purpo...

AI Technical Summary

Problems solved by technology

[0004] In the mass production of memory, there will be differences in the consistency of memory products, and the number of erasing and writing of memory in different batches will also be different. At present, the inspection of memory supplied in batches is only the inspection of electrical performance, and there is no test for memory erasure. The write life test makes the life of the memory uncertain, and cannot provide a reliable and effective basis for the meter storage algorithm and the data reliability test of the electric energy meter

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