Apparatuses and methods for capturing data in a memory
AssigneeMicron Technology, Inc.
InventorsRobert Tamlyn, Debra M. Bell, Michael Roth, Eric A. Becker, Tyrel Z. Jensen
Life of this patent
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Abstract
Apparatuses and methods for capturing data in a memory are disclosed herein. An apparatus may include a command path and a data capture logic. The command path may be configured to receive a command signal and to delay the command signal with a delay based, at least in part, on a plurality of propagation delays. The data capture logic may be coupled to the command path and configured to receive the delayed command signal and a data strobe signal. The data capture logic may further be configured to capture data according to the data strobe signal responsive, at least in part, to receipt of the delayed command signal.
Claims23
An apparatus, comprising:
- a command path configured to receive a command signal and delay the command signal based, at least in part, on a plurality of propagation delays, the plurality of propagation delays including a propagation delay of a data out multiplexer and a propagation delay of a data out driver;
- a data capture logic coupled to the command path and configured to receive the delayed command signal and a data strobe signal, the data capture logic further configured to capture data according to the data strobe signal responsive, at least in part, to receipt of the delayed command signal.
An apparatus, comprising:
- an adjustable delay circuit configured to receive a first command signal and a clock signal, the adjustable delay circuit further configured to delay the first command signal and the clock signal by a same amount based, at least in part, on a delay of a delay model;
- a command path configured to receive the delayed first command signal and delay the delayed command signal to provide a second command signal, the delay of the command path including a delay of a DQ model;
- and
- a data capture logic coupled to the command path and configured to capture data from a DQ pad responsive, at least in part, to receipt of the second command signal and respective edges of a data strobe signal.
A method, comprising:
- delaying a command signal with a command path based, at least in part, on a plurality of propagation delays to provide a delayed command signal to a data capture logic, wherein one of the plurality of propagation delays models a propagation delay of a data out multiplexer and a propagation delay of a data out driver;
- and
- capturing, using the data capture logic, data corresponding to the command signal according to a strobe signal and responsive, at least in part, to receipt of the delayed command signal.
A method, comprising:
- delaying a first command signal and a clock signal based, at least in part, on a delay of a delay model to provide a delayed first command signal and a delayed clock signal;
- delaying the delayed first command signal based, at least in part, on a plurality of propagation delays to provide a second command signal, the plurality of propagation delays including a delay of a DQ model;
- and
- capturing data responsive, at least in part, to receipt of the second command signal and respective edges of a data strobe signal.
A method, comprising:
- receiving a clock signal and a command signal;
- delaying the clock signal and the command signal by a same amount;
- delaying the delayed command signal by one or more cycles of the delayed clock signal to provide a shifted command signal;
- delaying the shifted command signal based, at least in part, on a propagation delay of a data output multiplexer and a propagation delay of a data out driver to provide a WR_START command signal;
- and
- capturing data according to a data strobe signal responsive, at least in part, to receipt of the WR_START command signal.
Dependencies are inferred from the claim text.