Integrated circuit of the logic circuit type comprising an elect

Details Integrated circuit of the logic circuit type comprising an elect Integrated circuit of the logic circuit type comprising an elect

1987-09-29

1989-09-05

Hecker, Stuart N.

Static information storage and retrieval

Floating gate

Particular biasing

365228, 365195, G11C 1134

Patent

active

048645419

ABSTRACT:
An integrated circuit of the logic circuit type comprises an electrically programmable non-volatile memory formed by a matrix of memory cells of the floating-gate transistor type, with read and write circuits handling the interconnection of these circuits with the memory, the integrated circuit receiving a general power voltage V.sub.CC and a programming voltage V.sub.pp which are different from one another. The circuit can also detect the main power voltage V.sub.CC, sending a signal to prohibit writing in the memory when it is observed that the power voltage V.sub.CC is at zero or in high impedance while thep rogramming voltage is present.

REFERENCES:
patent: 4321489 (1982-03-01), Higuchi et al.
patent: 4366560 (1982-12-01), McDermott et al.
patent: 4439804 (1984-03-01), Riddle et al.
patent: 4649521 (1987-03-01), Tsuchida et al.
1980 IEEE International Solid-State Circuits Conference, 13 Fev 1980, pp. 58-59, IEEE, New York, U.S.; A. C. Graham et al.: "Battery Backup Circuits for Memories".

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