READ-ONLY MEMORY DIAGNOSIS AND REPAIR
A testing circuit configured to test and diagnose a read-only memory comprises two multiple-input signature registers configured to generate two sets of signatures for multiple iterations of reading some or all of words stored in the read-only memory, control circuitry configured to control, accordi...
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | English French German |
Published |
01.11.2023
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A testing circuit configured to test and diagnose a read-only memory comprises two multiple-input signature registers configured to generate two sets of signatures for multiple iterations of reading some or all of words stored in the read-only memory, control circuitry configured to control, according to a test algorithm, from which of the outputs of the read-only memory each of the two multiple-input signature registers receives test response signal bits for each of the reading operations during each of the iterations, and a faulty element location determination device configured to generate a faulty element location signal for the read-only memory based on results of comparing the two sets of signatures with reference signatures. |
---|---|
Bibliography: | Application Number: EP20210707847 |