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

1987-11-04

1989-06-06

Popek, Joseph A.

Static information storage and retrieval

Read/write circuit

Signals

365222, G11C 700

Patent

active

048377449

ABSTRACT:
An integrated circuit of the logic circuit type includes a matrix of memory cells of the floating-gate transistor type, write and read circuits and circuitry to handle the interconnection of these circuits with the memory. The integrated circuit receives a general supply voltage Vcc, a programming voltage Vpp and an external clock signal divided into two complementary clock signals. The clock signals acts on, among others, the functioning of the write circuits. The integrated circuit further includes a circuit to detect the presence of internal clock signals. The circuit sends a signal prohibiting write operations in the memory when it detects the absence of one of the internal clock signals.

REFERENCES:
patent: 4337525 (1982-06-01), Akatsuka
patent: 4710900 (1987-12-01), Higuchi

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