Memory cell

Details Memory cell Memory cell

1997-07-25

1998-11-03

Yoo, Do Hyun

Static information storage and retrieval

Read only systems

Resistive

365105, 365115, 365148, 365175, 36518905, G11C 1706

Patent

active

058318933

ABSTRACT:
A read-only memory cell capable of being programmed by the application of radiant energy. The memory cell includes a trimmable resistor, a diode and a latch. In one embodiment, the cathode of the diode is in electrical communication with a first terminal of the resistor and the anode of the diode is in electrical communication with the second terminal of the resistor. The latch has an input terminal in electrical communication with the second terminal of the resistor and an output terminal. The latch is in a first state when the trimmable resistor is untrimmed and is in a second state when the trimmable resistor is trimmed. In one embodiment, the trimmable resistor is trimmable by laser energy. The invention also relates to a method of storing data in a memory cell.

REFERENCES:
patent: 4182024 (1980-01-01), Cometta
patent: 4233671 (1980-11-01), Gerzberg et al.
patent: 4590589 (1986-05-01), Gierzberg
patent: 4647906 (1987-03-01), Naylor et al.
patent: 5418738 (1995-05-01), Abadeer et al.
patent: 5572472 (1996-11-01), Kearney et al.
patent: 5602483 (1997-02-01), Uhling et al.
patent: 5684737 (1997-11-01), Wang et al.

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