UPROM programming protect circuit

Details UPROM programming protect circuit UPROM programming protect circuit

1994-05-25

1995-01-03

LaRoche, Eugene R.

Static information storage and retrieval

Read only systems

Semiconductive

365201, G11C 1700

Patent

active

053792491

ABSTRACT:
A UPROM circuit including a pair of UPROM devices arranged to provide a first output level when one of the pair of UPROM devices is programmed and a second output level when the other of the UPROM devices is programmed. The UPROM circuit is programmed by circuitry which selectively provides programming voltages to each of the UPROM devices. Apparatus is provided for sensing the condition of the UPROM devices and feeding back signals for disabling the circuitry providing programming voltages whenever one of the UPROM devices is already programmed.

REFERENCES:
patent: 4530074 (1985-07-01), Folsmbee
patent: 5046046 (1991-09-01), Sweha
patent: 5088066 (1992-02-01), Castro
patent: 5136544 (1992-08-01), Rozman

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