Programming a non-volatile memory
First Claim
1. A memory comprising:
- a plurality of non-volatile memory cells, wherein each non-volatile memory cell has a floating gate, comprising a first column of the plurality of non-volatile memory cells, wherein the column is coupled to a first read source line and a first read bit line;
a switch for coupling the first read source line to a first source line and the first read bit line to a first bit line in a first program mode and coupling the first read source line to the first bit line and the first read bit line to the first source line in a second program mode; and
a decoder for coupling a program voltage to the first bit line in the first program mode and the second program mode for use in injecting charge into a floating gate of a non-volatile memory cell of the plurality of non-volatile memory cells in the first mode and in the second mode.
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Accused Products
Abstract
In a system having a plurality of non-volatile memory cells, a method includes performing hot carrier injection on a first non-volatile memory cell in a first mode of programming. In the first mode, current flows from a first current electrode to a second electrode of the first non-volatile memory cell and charge is transferred from the current to a floating gate of the first non-volatile memory cell at a location nearer the first current electrode than the second current electrode. The method further includes performing hot carrier injection on the first non-volatile memory cell in a second mode of programming. In the second mode, current flows from the second current electrode to the first electrode of the first non-volatile memory cell and charge is transferred from the current to the floating gate of the first non-volatile memory cell at a location nearer the second current electrode than the first current electrode.
7 Citations
10 Claims
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1. A memory comprising:
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a plurality of non-volatile memory cells, wherein each non-volatile memory cell has a floating gate, comprising a first column of the plurality of non-volatile memory cells, wherein the column is coupled to a first read source line and a first read bit line; a switch for coupling the first read source line to a first source line and the first read bit line to a first bit line in a first program mode and coupling the first read source line to the first bit line and the first read bit line to the first source line in a second program mode; and a decoder for coupling a program voltage to the first bit line in the first program mode and the second program mode for use in injecting charge into a floating gate of a non-volatile memory cell of the plurality of non-volatile memory cells in the first mode and in the second mode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A memory comprising:
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a plurality of non-volatile memory cells, wherein each of the plurality of non-volatile memory cells includes a floating gate, a first current electrode, and a second current electrode; and a program circuit having a first mode and a second mode, wherein in the first mode the program circuit applies a higher voltage to the first current electrode than the second current electrode of a selected non-volatile memory cell so that in the first mode charge is spread across the floating gate after entering on a first side of the floating gate nearest the first current electrode and in the second mode the program circuit applies a higher voltage to the second current electrode than the first current electrode so that in the second mode charge is spread across the floating gate after entering on a first side of the floating gate nearest the second current electrode. - View Dependent Claims (8, 9, 10)
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Specification