Static information storage and retrieval – Floating gate – Multiple values
Patent
1998-11-03
2000-01-04
Yoo, Do Hyun
Static information storage and retrieval
Floating gate
Multiple values
36518519, 36518524, G11C 700
Patent
active
06011715&
ABSTRACT:
A programming method for a nonvolatile memory includes the steps of: a) determining a current value of the threshold voltage; b) acquiring a target value of the threshold voltage; c) calculating a first number of gate voltage pulses necessary to take the threshold voltage from the current value to the target value; d) applying a second number of consecutive voltage pulses to the gate terminal of the cell, the second number being correlated to the first number and having a uniformly increasing amplitude; e) then measuring a current value of the threshold voltage; and repeating steps c) to e) until a final threshold value is obtained.
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Canegallo Roberto
Chioffi Ernestina
Gerna Danilo
Pasotti Marco
Rolandi Pier Luigi
Carlson David V.
Gallanthay Theodore E.
STMicroelectronics S.r.l.
Yoo Do Hyun
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