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US 8,787,104 B2Granted
Semiconductor memory device
AssigneeSK hynix Inc.
InventorKeun Kook Kim
Life of this patent
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Abstract
A semiconductor memory device includes a temperature sensor configured to generate a low-temperature signal which is enabled at below first set temperature and a high-temperature signal which is enabled at above second set temperature; a start signal generator configured to receive a refresh command and generate a start signal according to the low-temperature signal; and an address counter configured to count refresh addresses in response to the start signal.
Claims5
A semiconductor memory device comprising:
- a temperature sensor configured to generate a low-temperature signal which is enabled at below first set temperature and a high-temperature signal which is enabled at above second set temperature;
- a start signal generator configured to receive a refresh command and generate a start signal according to the low-temperature signal;
- and
- an address counter configured to count refresh addresses in response to the start signal,
- wherein the address counter outputs a larger number of refresh addresses when the low-temperature signal is enabled than when the low-temperature and the high-temperature signal are disabled.
2 more elements
Dependencies are inferred from the claim text.