Mixed mode RAM/ROM cell using antifuses

Details Mixed mode RAM/ROM cell using antifuses Mixed mode RAM/ROM cell using antifuses

1997-11-03

1999-02-09

Dinh, Son T.

Static information storage and retrieval

Read only systems

Fusible

3652257, G11C 1700

Patent

active

058703276

ABSTRACT:
A mixed mode RAM/ROM cell includes a volatile memory cell and an antifuse coupled to the cell. In an array of mixed mode memory cells, addressing circuitry is coupled to the volatile memory cells and programming circuitry is coupled to the antifuses. After an antifuse is programmed, the associated memory cell is transformed from a volatile memory to a non-volatile memory. Specifically, during normal operation, a standard supply voltage is provided to all antifuses. Thus, after a power down or power fluctuation, the programmed antifuses ensure subsequent configuration of their respective volatile memory cells.

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Betty Prince, "Semiconductor Memories", copyright 1983, 1991, John Wiley & Sons, pp. 151, 157-160, 163-165.

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