Integrated circuit of the logic circuit type comprising an electrically programmable non-volatile memory
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United States of America Patent
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Sep 5, 1989
Grant Date -
N/A
app pub date -
Sep 29, 1987
filing date -
Sep 30, 1986
priority date (Note) -
Expired
status (Latency Note)
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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.
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