摘要:
A method of programming a nonvolatile memory device comprises applying a program voltage to a selected wordline to program selected memory cells, and performing a verify operation by applying a verify voltage to the selected wordline to determine the programming status of the selected memory cells. The verify operation applies the verify voltage to the selected wordline at least two different times to divide the selected memory cells into at least three regions corresponding to different threshold voltage ranges.
摘要:
A method of programming a nonvolatile memory device comprises applying a program voltage to a selected wordline to program selected memory cells, and performing a verify operation by applying a verify voltage to the selected wordline to determine the programming status of the selected memory cells. The verify operation applies the verify voltage to the selected wordline at least two different times to divide the selected memory cells into at least three regions corresponding to different threshold voltage ranges.
摘要:
A non-volatile semiconductor memory device includes a memory array having a cell string. The cell string includes a plurality of normal memory cells, a ground selection transistor gated so as to provide a source voltage to the normal memory cells, at least two dummy cells connected between a normal memory cell on one side end of the cell string and the ground selection transistor, wherein the normal memory cells are configured to store data and the dummy cells are configured to not store data. The memory device also includes a word line selection block which controls normal word lines to gate the normal memory cells and dummy word lines to gate the dummy cells, wherein the dummy word lines are controlled as sequential voltage levels during a program operation to select the normal memory cell on the one side end.
摘要:
A method of programming a nonvolatile memory device comprises applying a program voltage to a selected wordline to program selected memory cells, and performing a verify operation by applying a verify voltage to the selected wordline to determine the programming status of the selected memory cells. The verify operation applies the verify voltage to the selected wordline at least two different times to divide the selected memory cells into at least three regions corresponding to different threshold voltage ranges.
摘要:
The present invention relates to a bolometer, and more specifically to a compensation circuit for compensating non-uniformity due to the difference of operating temperature between bolometers which exist in bolometer array using semiconductor material. A compensation circuit according to the present invention comprises a biasing part including a first transistor generating bias current according to the change of operating temperature to have a dependency of exponential function for the operating temperature of circuit, and a second transistor turned on/off according to the column signal of a bolometer array; a bolometer part including a variable resistor for detecting IR in a pixel base, a third transistor turned on/off according to the column signal of a bolometer array coupled to one end of the variable resistor, and a fourth transistor turned on/off according to the row signal of a bolometer array coupled to the other end of the variable resistor; and an off-set compensation part for compensating the non-uniformity of the bolometer unit.
摘要:
A non-volatile semiconductor memory device includes a memory array having a cell string. The cell string includes a plurality of normal memory cells, a ground selection transistor gated so as to provide a source voltage to the normal memory cells, at least two dummy cells connected between a normal memory cell on one side end of the cell string and the ground selection transistor, wherein the normal memory cells are configured to store data and the dummy cells are configured to not store data. The memory device also includes a word line selection block which controls normal word lines to gate the normal memory cells and dummy word lines to gate the dummy cells, wherein the dummy word lines are controlled as sequential voltage levels during a program operation to select the normal memory cell on the one side end.