Semiconductor device
AssigneeSK hynix Inc.
InventorsYu Ri LIM, Sangsic YOON
Life of this patent
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Abstract
A semiconductor device includes a phase difference detection circuit configured to generate a detection signal by detecting a phase difference of a clock and a strobe signal, the detection signal being generated at a logic level of the strobe signal in synchronization with the clock, and configured to generate a write clock by delaying the strobe signal. The semiconductor device also includes a control signal generation circuit configured to store the detection signal, in synchronization with the write clock, and configured to output the stored detection signal as a control signal.
Claims23
A semiconductor device comprising:
- a phase difference detection circuit configured to generate a detection signal by detecting a phase difference of a clock and a strobe signal, the detection signal being generated at a logic level of the strobe signal in synchronization with the clock, and configured to generate a write clock by delaying the strobe signal;
- and
- a control signal generation circuit configured to store the detection signal, in synchronization with the write clock, and configured to output the stored detection signal as a control signal.
A semiconductor device comprising:
- a write leveling control circuit configured to generate a detection signal, by detecting a phase difference of a clock and a strobe signal, and configured to output the detection signal, which is stored during a toggling period of the strobe signal, as a control signal, wherein the clock and the strobe signal are inputted to the write leveling control circuit from an external device to the write leveling control circuit, and wherein the detection signal is generated at a logic level of the strobe signal in synchronization with the clock;
- and
- a phase difference adjustment circuit configured to generate an internal strobe signal, in response to the control signal, by adjusting a phase difference of the clock and a write clock, wherein the write clock is generated from the strobe signal;
- and
- an internal circuit configured to at least one of input and output data in synchronization with the internal strobe signal.
Dependencies are inferred from the claim text.