Apparatus with multi-mode-register read and write commands
AssigneeMicron Technology, Inc.
InventorsKeun-Soo Song, Mark K. Hadrick
Life of this patent
Estimating the term…
Abstract
Methods, apparatuses, and systems related to operations for executing mode register read and mode register write all commands. A memory device can execute a register read or a mode register write all command using a unit interval of one or more DQs. One or more command address pins can be designated to store groups of mode registers. The memory device can read or write mode register information associated with the group of mode registers through a pre-defined number of DQs, burst length, and die configuration.
Claims20
An apparatus, comprising:
- an input/output circuit configured to communicate with an external controller, wherein the input/output circuit comprises a command/address (CA) interface and a data (DQ) interface;
- and
- a mode register circuit coupled to the input/output circuit and configured to:
- decode, on the CA interface, a command from the external controller, wherein the command comprises a mode register read all (MRR-ALL) command or a mode register write all (MRW-ALL) command;
- determine a die configuration and a burst length for executing the MRR-ALL command or the MRW-ALL command;
- and
- determine at least one group of mode registers identified in the MRR-ALL command or the MRW-ALL command,
- wherein the input/output circuit is configured to send:
- mode register information associated with the at least one group of mode registers identified in the MRR-ALL command to the external controller over the DQ interface.
A memory system, comprising:
- a memory controller;
- and
- a memory array operably coupled to the memory controller and configured to:
- decode a command from the memory controller, wherein the command comprises a mode register read all (MRR-ALL) command or a mode register write all (MRW-ALL) command;
- determine a die configuration and a burst length for executing the MRR-ALL command or the MRW-ALL command;
- determine at least one group of mode registers identified in the MRR-ALL command or the MRW-ALL command;
- and
- send mode register information associated with the at least one group of mode registers identified in the MRR-ALL command to the memory controller.
A method of operating an apparatus, the method comprising:
- decoding a command from an external controller, wherein the command comprises a mode register read all (MRR-ALL) command or a mode register write all (MRW-ALL) command;
- determining a die configuration and a burst length for executing the MRR-ALL command or the MRW-ALL command;
- determining at least one group of mode registers identified in the MRR-ALL command or the MRW-ALL command;
- and
- sending mode register information associated with the at least one group of mode registers identified in the MRR-ALL command to the external controller.
Dependencies are inferred from the claim text.