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US 9,190,139 B2Granted
Memory and memory system including the same
AssigneeSK hynix Inc.
InventorsChul-Moon Jung, Bo-Yeun Kim, Saeng-Hwan Kim
Life of this patent
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Abstract
A memory may include a plurality of word lines, one or more redundancy word lines for replacing one or more word lines among the plurality of word lines, a target address generation unit suitable for generating one or more target addresses using a stored address, and a control unit suitable for sequentially refreshing the plurality of word lines in response to a refresh command which is periodically inputted, refreshing a word line selected based on the target address when the refresh command is inputted M times, and refreshing the one or more redundancy word lines whenever the refresh command is inputted N times, wherein the M and N are natural numbers.
Claims24
A memory comprising:
- a plurality of word lines;
- one or more redundancy word lines suitable for replacing one or more word lines among the plurality of word lines;
- a target address generation unit suitable for generating one or more target addresses using a stored address;
- and
- a control unit suitable for sequentially refreshing the plurality of word lines in response to a refresh command which is periodically inputted, refreshing a word line selected based on the target address when the refresh command is inputted M times, and refreshing the one or more redundancy word lines whenever the refresh command is inputted N times, wherein the M and N are natural numbers.
2 more elements
A memory system comprising:
- a memory comprising a plurality of word lines and one or more redundancy word lines for replacing one or more word lines among the plurality of word lines, and suitable for sequentially refreshing the plurality of word lines in response to a refresh command which is periodically inputted, refreshing a word line selected based on a target address whenever the refresh command is inputted M times, and sequentially refreshing the one or more redundancy word lines whenever the refresh command is inputted N times, wherein the N and M are natural numbers;
- and
- a memory controller suitable for periodically inputting the refresh command to the memory,
- wherein the target address corresponds to one or more word lines adjacent to a word line which is activated a set number of times or more or is activated with a set frequency or more, among the plurality of word lines.
1 more element
A memory comprising:
- a plurality of word lines;
- one or more redundancy word lines suitable for replacing one or more word lines among the plurality of word lines;
- a first counting unit suitable for generating first counting information which is changed whenever a word line is refreshed;
- and
- a second counting unit suitable for generating second counting information which is changed whenever a redundancy word line is refreshed;
- and
- a control unit suitable for refreshing a word line selected based on the first counting information in response to the refresh command which is periodically inputted, and refreshing a redundancy word line selected based on the second counting information whenever the refresh command is inputted N times, wherein the N is a natural number.
4 more elements
A memory comprising:
- a plurality of word lines;
- one or more redundancy word lines suitable for replacing one or more word lines among the plurality of word lines;
- a counting unit suitable for generating first counting information which is changed whenever a word line is refreshed, and generating second counting information which is changed whenever a redundancy word line is changed;
- a target address generation unit suitable for detecting an address of a word line, which is activated a set number of times or more or is activated with a set frequency or higher, among the plurality of word lines, and generating a target address corresponding to one or more word lines adjacent to a detected word line corresponding to a detected address detected by the address detection unit;
- and
- a control unit suitable for refreshing a word line selected based on the first counting information in response to a refresh command, refreshing a word line selected based on the target address whenever the refresh command is inputted M times, and refreshing a redundancy word line selected based on the second counting information whenever the refresh command is inputted N times, wherein the M and N are natural numbers.
3 more elements
Dependencies are inferred from the claim text.