Semiconductor devices
AssigneeSK hynix Inc.
InventorWoongrae KIM
Life of this patent
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Abstract
A semiconductor device includes a command decoder and a period signal generation circuit. The command decoder generates a first entry command and a first exit command based on a first internal chip selection signal and a first internal control signal and generates a second entry command and a second exit command based on a second internal chip selection signal and a second internal control signal. The period signal generation circuit generates a period signal based on the first entry command, the second entry command, the first exit command, the second exit command, and the period signal.
Claims22
A semiconductor device comprising:
- a command decoder configured to generate a first entry command and a first exit command based on a first internal chip selection signal and a first internal control signal and configured to generate a second entry command and a second exit command based on a second internal chip selection signal and a second internal control signal;
- and
- a period signal generation circuit configured to generate a period signal based on the first entry command, the second entry command, the first exit command, the second exit command, and the period signal.
A semiconductor device comprising:
- a first exit signal generation circuit configured to generate a first exit signal which is enabled when a first connection signal and a second connection signal are sequentially generated while a period signal is enabled, wherein the first connection signal is generated from a first exit command, and the second connection signal is generated from a second exit command;
- a second exit signal generation circuit configured to generate a second exit signal which is enabled when the second connection signal and the first connection signal are sequentially generated while the period signal is enabled;
- and
- a period signal drive circuit configured to generate a disabled period signal which is disabled based on the first exit signal and the second exit signal.
Dependencies are inferred from the claim text.