Stacked memory devices, systems, and methods

摘要

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.

主权项

1. 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.