Method of making a semiconductor memory device having error chec

Details Method of making a semiconductor memory device having error chec Method of making a semiconductor memory device having error chec

1991-10-07

1993-11-16

Thomas, Tom

Fishing, trapping, and vermin destroying

437 48, H01L 2170

Patent

active

052623424

ABSTRACT:
A semiconductor memory device having error checking/correcting functions includes a circuit (10) for generating a code for error checking/correcting based on information externally supplied and linking the information and the code to be transmitted to a memory cell array (1), and another circuit (11) for error checking and correcting read-out information from the information and the code which are read-out from the memory cell array so as to output correct read-out information. The code word generating circuit (10) and the error checking/correcting circuit (11) are formed of a masked ROM integrated on the same semiconductor chip (100) as that of the memory cell array (1) in the memory device.

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