Semiconductor device for calculating and calibrating delay amount
AssigneeSK hynix Inc.
InventorsGi Moon Hong, Dae Han Kwon
Life of this patent
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Abstract
A semiconductor device includes a strobe transmission circuit configured to output an oscillation strobe signal, through a first delay path circuit, as a strobe signal when a first measurement operation is performed and configured to output the oscillation strobe signal through a second delay path circuit as the strobe signal when a second measurement operation is performed, and a calibration circuit configured to compare the number of times the strobe signal toggles during the first measurement operation to the number of times the strobe signal toggles during the second measurement operation to calibrate the delay amounts of the first and second delay path circuits to be the same.
Claims20
A semiconductor device comprising:
- a strobe transmission circuit configured to output an oscillation strobe signal, through a first delay path circuit, as a strobe signal when a first measurement operation is performed and configured to output the oscillation strobe signal through a second delay path circuit as the strobe signal when a second measurement operation is performed;
- and
- a calibration circuit configured to compare the number of times the strobe signal toggles during the first measurement operation to the number of times the strobe signal toggles during the second measurement operation to calibrate delay amounts of the first and second delay path circuits to be the same.
A semiconductor device comprising:
- a strobe transmission circuit configured to output one of a pre-strobe signal and an oscillation strobe signal as a strobe signal through a delay path circuit based on whether a measurement operation is performed;
- an oscillation strobe signal generation circuit configured to receive the strobe signal to output the strobe signal as the oscillation strobe signal while the measurement operation is being performed;
- and
- a counter configured to count the number of toggles of the oscillation strobe signal to generate a count signal while the measurement operation is being performed.
Dependencies are inferred from the claim text.