Memory controller, memory system having the memory controller, and operating method of the memory controller
AssigneeSK hynix Inc.
InventorsMin Gu Kang, Han Choi
Life of this patent
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Abstract
A memory system includes a memory device for storing data; and a memory controller performing a program operation on the memory device by using one of a first program mode and a second program mode. The memory controller counts a number of program operations performed by using the first program mode in which a ratio of dummy data to program data is greater than or equal to a predetermined value; and changes the program mode to the second program mode from the first program mode, when the counted number is greater than or equal to a predetermined number.
Claims14
A memory system comprising:
- a memory device configured to store data;
- and
- a memory controller configured to perform a program operation on the memory device by using one of a first program mode and a second program mode,
- wherein the memory controller configured to:
- count a number of program operations performed by using the first program mode in which a ratio of dummy data to program data is greater than or equal to a predetermined value;
- and
- change the program mode to the second program mode from the first program mode, when the counted number is greater than or equal to a predetermined number.
A memory system comprising:
- a memory device including a first memory block for storing n bits of data per cell and a second memory block for storing m bit(s) of data per cell, wherein m and n are natural numbers, and 1≤m<n;
- and
- a memory controller configured to program program data in the first memory block in a program operation, calculate a ratio of dummy data to the program data, and program subsequent program data in the second memory block when the ratio of the dummy data to the program data exceeds a threshold value.
A method of operating a memory system, the method comprising:
- performing a plurality of program operations by using a first program mode;
- counting a number of program operations in which a ratio of dummy data to program data is greater than or equal to a predetermined value, among program operations performed by using the first program mode;
- and
- performing subsequent program operations by using a second program mode when the counted number is greater than or equal to a predetermined number.
Dependencies are inferred from the claim text.