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Issue No. 10 - October (1991 vol. 40)
ISSN: 0018-9340
pp: 1153-1159
<p>A novel RAM architecture supporting concurrent memory access and on chip testing (CMAT) is proposed. A large-capacity memory chip is decomposed into test neighborhoods (TNDs), each of which is tested independently. When there are data stored in a TND, the data are saved into a buffer before testing the TND, and the TND's contents are restored using buffered data after testing the TND. If an external request is not made to the TND, the request can be directed to the addressed memory cells. Otherwise, the buffered data can be loaded back into the TND, or the request is detoured to a corresponding buffer. By deriving an analytical model, the performance penalty and hardware overhead of the CMAT architecture are shown to be very small.</p>
RAM architecture; concurrent memory access; on chip testing; CMAT; memory chip; test neighborhoods; buffer; external request; addressed memory cells; performance penalty; hardware overhead; integrated circuit testing; integrated memory circuits; memory architecture; random-access storage.

J. Liu and K. Shin, "A RAM Architecture for Concurrent Access and on Chip Testing," in IEEE Transactions on Computers, vol. 40, no. , pp. 1153-1159, 1991.
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