Semiconductor memory

Details Semiconductor memory Semiconductor memory

1992-02-18

1994-03-15

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

Data refresh

36518904, G11C 11401

Patent

active

052951090

ABSTRACT:
A semiconductor memory is provided to which external data can be written during a self-refresh. Data thus written can be read out and examined to measure the oscillation frequency of the internal refresh oscillator There is no need to use special equipment such as a frequency counter for testing the oscillation frequency, and the oscillation frequency can be tested after chip sealing.

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patent: 4984208 (1991-01-01), Sawada et al.
patent: 4985868 (1991-01-01), Nakano et al.
patent: 5033026 (1991-07-01), Tsujimoto

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