Preset circuit for information storage devices

Details Preset circuit for information storage devices Preset circuit for information storage devices

1979-07-19

1982-04-20

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Erase

365189, G11C 1140

Patent

active

043262708

ABSTRACT:
An electronic circuit for simultaneously erasing all the information stored in an electronic information storage device and entering a predetermined new pattern of information into the storage device comprises a plurality of bistable semiconductor cells with an additional transistor current-conducting region included on a predetermined side of each cell. The additional current-conducting regions in the cells along each word row are coupled to an additional word line which connects to a current switch for the row. At an appropriate pulse signal, the current switch activates to switch row current temporarily from the standard current-source word line, which conducts holding current to the row during normal operation, to the additional word line, thereby erasing the old data and entering the new information bits.

REFERENCES:
patent: 4051464 (1977-09-01), Huang
patent: 4068217 (1978-01-01), Arnett et al.
patent: 4099196 (1978-07-01), Simko

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