Semiconductor memory device comprising a test circuit and a meth

Details Semiconductor memory device comprising a test circuit and a meth Semiconductor memory device comprising a test circuit and a meth

1991-08-27

1995-01-24

Cosimano, Edward R.

Excavating

364579, G06F 1520

Patent

active

053847849

ABSTRACT:
A semiconductor memory device includes a memory array. The bit line pairs of the odd number order in the memory array belong to a first group, and the bit line pairs of the even number order belong to a second group. A first amplifier is connected to each bit line pair. Corresponding to the first group, write buses read buses and a read/test circuit are provided. Corresponding to the second group, write buses read buses and a read/test circuit are provided. A column decoder selects a plurality of bit line pairs simultaneously at the time of testing. At the time of testing, each of the read/test circuits compares data read out from the plurality of bit line pairs belonging to the corresponding group with a given expected data for providing the comparison result.

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