Semiconductor memory device
First Claim
1. A semiconductor memory device comprising:
- a memory cell array including a first set of memory cells commonly connected to a first word line, and a second set of memory cells commonly connected to a second word line; and
a control circuit configured to execute a writing operation on the memory cells, including controlling voltages applied to the first and second word lines, wherein the writing operation includes a coarse program operation and a fine program operation and the control circuit executes the writing operation on the first and second sets of memory cells in a single write operation that includes starting the following operations in order;
(1) the coarse program operation on the first set of memory cells;
(2) the coarse program operation on the second set of memory cells;
(3) the fine program operation on the first set of memory cells; and
(4) the fine program operation on the second set of memory cells.
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Accused Products
Abstract
A semiconductor memory device includes a first set of memory cells commonly connected to a first word line, a second set of memory cells commonly connected to a second word line, and a control circuit configured to execute a writing operation on the memory cells, including controlling voltages applied to the first and second word lines. The writing operation includes a coarse program operation and a fine program operation and the control circuit executes the writing operation on the first and second sets of memory cells in a single write operation that includes starting the following operations in order: (1) the coarse program operation on the first set of memory cells; (2) the coarse program operation on the second set of memory cells; (3) the fine program operation on the first set of memory cells; and (4) the fine program operation on the second set of memory cells.
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Citations
20 Claims
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1. A semiconductor memory device comprising:
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a memory cell array including a first set of memory cells commonly connected to a first word line, and a second set of memory cells commonly connected to a second word line; and a control circuit configured to execute a writing operation on the memory cells, including controlling voltages applied to the first and second word lines, wherein the writing operation includes a coarse program operation and a fine program operation and the control circuit executes the writing operation on the first and second sets of memory cells in a single write operation that includes starting the following operations in order; (1) the coarse program operation on the first set of memory cells; (2) the coarse program operation on the second set of memory cells; (3) the fine program operation on the first set of memory cells; and (4) the fine program operation on the second set of memory cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A semiconductor memory device comprising:
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a memory cell array including a first set of memory cells commonly connected to a first word line, and a second set of memory cells commonly connected to a second word line; and a control circuit configured to execute a writing operation on the memory cells, including controlling voltages applied to the first and second word lines, wherein the writing operation includes an initial program operation, a coarse program operation and a fine program operation, and the control circuit executes the writing operation on the first and second sets of memory cells in a single write operation that includes performing the initial program operation on the first and second sets of memory cells, and then starting the following operations in order; (1) the coarse program operation on the first set of memory cells; (2) the coarse program operation on the second set of memory cells; (3) the fine program operation on the first set of memory cells; and (4) the fine program operation on the second set of memory cells. - View Dependent Claims (10, 11, 12)
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13. A method of performing a write operation on first and second sets of memory cells of a semiconductor memory device, wherein the first set of memory cells is commonly connected to a first word line, and the second set of memory cells is commonly connected to a second word line, said method comprising:
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executing a writing operation on the first and second sets of memory cells, including controlling voltages applied to the first and second word lines, as a single write operation that includes starting the following operations in order; (1) the coarse program operation on the first set of memory cells; (2) the coarse program operation on the second set of memory cells; (3) the fine program operation on the first set of memory cells; and (4) the fine program operation on the second set of memory cells. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification