Back to results
US 10,529,405 B2Granted
Refresh control device with plurality of oscillator circuits
AssigneeSK hynix Inc.
InventorsJae Seung Lee, Chang Hyun Kim, Yo Sep Lee
Life of this patent
Estimating the term…
Abstract
A refresh control device, and a memory device may be provided. The latch controller may include a first oscillator configured to generate a first oscillation signal, and a second oscillator configured to generate a second oscillation signal. The latch controller may be configured to receive a precharge signal and prevent the second oscillation signal from being synchronized with the precharge signal.
Claims11
A refresh control device comprising:
- a first oscillator configured to generate a first oscillation signal having a predetermined time period based on an oscillation enable signal;
- a second oscillator configured to generate a second oscillation signal having a predetermined time period based on the oscillation enable signal;
- a counter configured to generate a pre-enable signal synchronized with the first oscillation signal based on a precharge signal;
- a binary code generator configured to generate a random binary code signal formed in a random pulse shape based on the second oscillation signal;
- and
- a combination circuit configured to output a latch enable signal based on the random binary code signal and the pre-enable signal and prevent the second oscillation signal from being synchronized with the precharge signal,
- wherein the second oscillation signal has a different time period than the first oscillation signal.
4 more elements
Dependencies are inferred from the claim text.