Semiconductor memory device providing a selection circuit change

Details Semiconductor memory device providing a selection circuit change Semiconductor memory device providing a selection circuit change

1984-02-14

1987-04-07

Moffitt, James W.

Static information storage and retrieval

Read only systems

Semiconductive

365189, 365230, G11C 1134

Patent

active

046566066

ABSTRACT:
A read-only memory has a terminal for receiving a writing current and a data input/output terminal. In the writing operation, the writing current is supplied to the terminal which is different from the data input/output terminal. Therefore, a data output circuit can be constituted by an ECL circuit having a relatively low withstand voltage, and a selection circuit related to the reading operation is achieved by using an ECL circuit. Accordingly, the read-only memory performs the reading operation at high speeds. During the writing operation, a different selection circuit is used which can withstand high voltages.

REFERENCES:
patent: 4385368 (1983-05-01), Principi et al.

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