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US 9,542,102 B2Granted
Stacked memory devices, systems, and methods
AssigneeMicron Technology, Inc.
InventorJoe M. Jeddeloh
Life of this patent
Estimating the term…
Abstract
Memory requests for information from a processor are received in an interface device, and the interface device is coupled to a stack including two or more memory devices. The interface device is operated to select a memory device from a number of memory devices including the stack, and to retrieve some or all of the information from the selected memory device for the processor. Additional apparatus, systems and methods are disclosed.
Claims19
A method comprising:
- receiving, in an interface device, a memory request for selected information;
- performing a cache tag look-up routine in the interface device to select a memory device and a non-volatile memory device coupled to the interface device;
- accessing the memory device to retrieve the selected information and storing, in the interface device, the retrieved information as first information;
- retrieving the selected information from the non-volatile memory device, as second information, when the first information is less than all of the selected information;
- and
- storing the second information in the interface device.
3 more elements
A method comprising:
- receiving a memory request for information in an interface device coupled to a group of memory devices and a storage device that is separate from the group of memory devices;
- performing a cache tag look-up routine in the interface device to select, in response to the memory request for information, a first memory device from the group of memory devices, and a location in the storage device;
- retrieving the information from the first memory device when some of the information is in the first memory device;
- retrieving some of the information from a second memory device of the group of memory devices if all of the information is not in the first memory device;
- and
- retrieving some or all of the information from the storage device when all of the information is not in the first memory device and the second memory device;
- and
- storing the information in the interface device.
5 more elements
A method comprising:
- receiving, in an interface device, a memory request for information, the interface device coupled to a storage device and a plurality of memory devices over separate channels;
- and
- operating the interface device to:
- perform a cache tag look-up routine in the interface device to select both a location in the storage device and in at least a first memory device of the plurality of memory devices;
- access the first memory device to determine if the first memory device stores the information;
- retrieve at least a portion of the information as retrieved information from the first memory device;
- retrieve at least a portion of the information as the retrieved information from the storage device;
- and
- store the retrieved information in the interface device.
6 more elements
Dependencies are inferred from the claim text.